It is absolutely insane to me that you don't have more subscribers. I am a Moto mechanic and part time aircraft mechanic for a living so I am lucky enough to own or have access to most anything I need for suspension work (tools, supplemental supplies, nitrogen etc........) That being said I don't think most people realize just how valuable your content really is for a novice/home mechanic wanting the learn the craft. Good on you for thinking and taking time to brief folks on the potential dangers of nitrogen indoors. Keep up the good work man!
Wow! Thank you so much for such a thoughtful comment. There's no ruining my day after reading this first thing in the morning. looking forward to making more videos, and if there are ANY misses or improvements that you see or think can be made please feel free to share them for others as well as myself. there's always room to learn 👍
I can't believe your channel doesn't have more followers. Fantastically explained at a level that is understandable to everyone, beautiful imagery and you don't forget safety. I myself am an ex hvac technician who has had a bikeshop for several years now, people underestimate the danger of nitrogen.
Thank you very much for the thoughtful comment. I was really hoping to get the safety message across because you're 100% right, nitrogen can become unsafe if not handled correctly.
Congratulations for the super great explanation and advice about wearing safety glasses, not to mention the clear and calm way of telling about details step by step!
Thanks you for such a thoughtful comment. It's Very much appreciated. Hopefully it comes in handy for you if you ever plan to put together a system like this
Glad to hear that the video was helpful. I'm planning to release a video this Monday (if I can finish editing it in time) that will highlight a great solution for easily filling Schrader type shocks. The solution seems to have fixed the pesky popping O-ring issue I've always faced with shock pumps. Stay tuned. It should be worth your time
Thanks so much for the time it took to create the video. As the first time ive ever commented on youtube, obviously i was impressed (and ya saved me 550 bucks. Thanx again😄
I'm happy to hear that the video worked out for you and super happy to hear that it saved you that kind of money. The system is easy enough to use, handle it with care and you'll do just fine with it. Thanks for the comment 👍
I really appreciate your time and effort to make this video! thank you so much, now i can uderstand much better how it works!!!! i cant say enough word to thank you
Thanks! I literally just added the parts used in my system in the description section based on request. just make sure to make safety the high priority every time you use the system if you decide to build one. 👍
I love your video and thanks for it, but I would like to add something.! Nitrogen give's your rubber o-rings and seals a greater chance at a long healthy life, with less contamination from water vapor's found in 'regular air'. Those water vapors actually act as a catalyst, accelerating rust, corrosion and oxidation of your shock's rubber compounds/seals.
Thank you very much for the comment myman, and you do bring up a great subject. I completely understand the concern. However, based on conversations with suspension experts, nitrogen offers limited benefits in most riding conditions. The only significant advantage is in very specific scenarios, like filling a shock with air in a humid environment and then riding aggressively in extreme heat. In such cases, water vapor can potentially affect the shock's performance. As for corrosion, modern shock materials are highly resistant to corrosion. Aluminum components have protective coatings, and seals are typically made of rubber and are lubricated with grease, as is the IFP chamber walls (if properly serviced). Not only does this help with friction, but it also adds an added layer of corrosion protection as well. While moisture can theoretically cause corrosion over time, this is extremely unlikely in a well-maintained shock. Both RockShox and Fox acknowledge that either nitrogen or air can be used, although Fox more often recommends nitrogen. Interestingly, FOX has posted a few videos over the years showing their own service techs servicing shocks for professional at race events. In EVERY video, they fill the IFP chamber with air. Not once have I seen them use nitrogen, and this is high-stakes racing situations where performance is paramount. I certainly have nothing against using nitrogen. In fact, I use it frequently during service, especially with popular shocks like the DPS. It's simply more convenient for me. However, I don't think most people need to invest in a nitrogen system, as air works perfectly fine in most cases. What's more important to me is that riders stick to their 50-hour and 200-hour service intervals. Regular maintenance not only ensures optimal performance but also extends the life of their suspension components. And that's good for everyone. 👍 Again, thanks for the comment
Excellent video. FWIW; recently my Fox safety needle failed after a few years of use. It’s not at all serviceable. I’ve been in contact with Fox and repeatedly denied the purchase of a replacement.
Well that sucks! I never looked into the warranty on these things ( I have no idea how long they are expected to last, but so far so good). I know they can be sent to FOX for service, but my guess is the price will probably end up being close to a new needle for doing so. interested to see how it all pans out for you
your videos are awesome. I being servicing suspension for the last 10 years. Can you tell me the parts number to get me the full nitro system? I will highly appreciate it. I do have a bike mobile shop (Cycledelic bike shop)
Sorry for the delayed response, but I've been OOO. The Description section has links (which, surprisingly, still work) to pretty much all the parts to this setup. As for a tank, I would check marketplace, Craigslist, etc, for any used tank at the lowest price and bring it to a fill station. Nitrogen works like propane, they replace the tank at the cost of the nitrogen only. I have no affiliation with any of the links, so you can use them as a reference to find similar products at lower prices. The only thing I wouldn't skimp on is the regulator. There are many lower cost regulators out there, but I feel going with a reputable brand should have its benefits.
Hello. Good day, I'm building a nitrogen system following your recommendations in this video. I'm wondering how to fill with nitrogen those Fox shocks that have piggybacks? Since must of them use Schrader valves, I guess I don't need the safety needle (which I already have), but some type of nozzle that allows to connect the 1/4" NPT from the hose to the 8mm schrader valve. Could you please guide me in the type of nozzle needed for the job? Thank you in advance. Cheers.
What a great mind-meld! I'm actually in the process of developing a new solution that utilizes two promising options. I'm confident that one of them will be ideal for effortlessly switching between needle and Schrader setups, and it will also resolve the persistent problem of damaged Schrader adapter seals. If everything goes according to plan, I'll release a video this month. So, if you're not in a rush, I'd recommend keeping an eye out for it.
Hi, you make in depth awesome videos, can you tell me if the small nitrogen fill spanner in your video comes with the fox nitrogen needle or not as I cant seem to find it as a seperate part number or part of the fox needle kit anywhere on internet, would much appreciate your help ? Cheers Simon
Merry Christmas simon. wishing you and yours a warm and safe holiday season. All the parts are seperate purchases for the most part. The fox needle includes only the needle itself as a full mechanism, The pelet inflator tool that actually attaches to the shock in order to fill it is a serpreate purchase. Any additional adapters are purchased separately as well. I have a list of links to parts that can help you build a system in the description section. though you can build a system like this in many different ways, I find the system as seen in this video is the most efficient for me based on how I use it. Let me know if there are any other questions
Hi, I recently came in possesion of a float rp23. In order to orientate the mounting in the right direction I released the pressure on both ends of the damper (my bad). And its been a pain trying to find out what is the right pressure on the lower part of the damper. I see you going up to 500psi, is this down to rider weight or just a global setting? My damper pump only goes to 300psi, any ideas on how I might solve this? Ty so much for the video as its the only I could find on this topic!
This is a tough one. There are many variables in that version of shock, but the ifp chamber is not going to be 500psi for that model. On the shock, do you see anything that says "valve tune" with a "number" next to it (ex: 200, 250, 400, etc.)? If yes, then this is your IFP PSI. Let me know.
@@zoubtube Thanks for the reply! And yes its tricky trying to find out which I exactly have (previous post has a typo: its an rp2 not rp23). It has no markings or text on the damper except make and model. When doing an image search none of the ones I find have a valve on the lower chamber like mine has, so its kinda weird. I did try inflating it with a fork pump today and when both chambers are filled it doesnt want to dampen at all. So I guess I will need to tinker around to see what gives good results 🫤
@@martijnt1353 For an RP2 I would try an IFP depth of 60.96mm (~2.4") and 400PSI in the IFP chamber. When done, test it by compressing the shock without the air can. if you can't fully bottom it out, that means you're hydrolocked, which means your IFP is too low. To solve this, you can SLOWLY, and I mean VERY slowly, release oil from the bleed port. Open a bleed port a TINY bit, so a few drops of oil come out. Then close it, test to see if it bottoms out, and by bottoms out, I mean you feel the bumper. Repeat until it bottoms out. Let me know how it goes
@@zoubtube Alright, have also had contact with the tech centre of Fox. They said the baseline for the IPF chamber should be 300psi. But they also stated mine has been modified by a previous owner by adding a schrader valve so that might be a slight change to the chamber volume. This was probably done so that it could be filled without a needle.
@@martijnt1353 Interesting. Looking at an old fox service chart I see the following for the RP2. But who knows, things might have changed. The reason I picked 2.4" depth as a starting point is I assumed your shock was 7.875" or less since these were very common. If it turned out your shock was smaller, then it would be easier to raise the IFP by slowly letting a bit of oil at a time to get to the proper IFP depth, as opposed to opening the damper to add more oil. Let me know how it goes. RP2 & RP3 IFP Depth IFP PSI 5.5 x 1.0 1.4 400 6.0 x 1.25 1.6 400 6.5 x 1.5 1.9 400 7.25 x 1.75 2.1 400 7.5 x 1.75 2.25 400 7.5 x 2.0 2.25 400 7.875 x 2.0 2.25 400 7.875 x 2.25 2.4 400 8.5 x 3.0 2.65 400 9.5 x 3.0 3.075 400
supercool info, love the safety first advices! thank you! I might say this will work with any system, all we gotta do emos change needles ? or would that fox needle work for Öhlins, Rockshox etc ! thank you !
Glad to hear the video was helpful for you. Different brands use different heads to fill their shocks. With a system like this you can swap the head for the brand shock you want to fill. ex needle with fox, Schrader with rockshox. in some case you would need adapters, example filling a FOX transfer post. hopefully this helps
thanks. I'm assuming you mean filling up an IFP chamber with a hand pump and nitrogen needle. I've posted some FOX shock videos that go over this as I expect this would be the scenario for the majority of people since its a much more cost effective solution over all. if you meant something else, let me know and I'll try to better answer your question
Hello. Thanks for this great video. I would like to know if the tool used over the needle comes within fox's safety needle kit. Thanks in advance. Cheers.
Apologies for the delayed response. Unfortunately not, the FOX pellet retaining tool is a separate purchase. I'd look around for the best price. below is a link that might help www.treefortbikes.com/Fox-Pellet-Retainer-Tool-Nitrogen-Fill?adpos=&scid=scplp333222447147&sc_intid=333222447147&gad_source=1&gclid=CjwKCAjwhvi0BhA4EiwAX25uj19fIPt6iPAZpS3JljNiU1DAcDXboqpFiW4gdxkaQ7Ky3Kd_icRv8RoCps4QAvD_BwE
Hi man, Where can I get the hexagonal tool that has the hole for the syringe to go through? The small round one that has a screw attached to it. Thanks for the information
here you go. its a fox pellet retainer tool. if you buy it you will need to buy a bolt for it, which you can find at a local hardware store. cost about 50 cents. I would go with a longer bolt though so you can have more leverage www.treefortbikes.com/Fox-Pellet-Retainer-Tool-Nitrogen-Fill?adpos=&scid=scplp333222447147&sc_intid=333222447147&gclid=Cj0KCQjw8NilBhDOARIsAHzpbLCmjBQ1yTWEFLA5JKO12AHQ55BqjwfXOjoIDoI73nAYOi0XqBdkSrIaAsyBEALw_wcB reqainter
I’m curious how the nitrogen didn’t escape before you tightened the pellet fastener, after removing the shock from the injection needle? Help me understand.
Great question. The pelt is basically self-healing when under pressure. After inserting the needle through the pellet into the IFP chamber, the pellet-retaining screw needs to be tightened to a point where it applies pressure to the pellet, which in turn applies pressure around the needle. The trick is to not apply too much pressure to the point where you won't be able to pull out the needle, or potentially break it. Adding gas to the IFP chamber ends up applying even more pressure to the pellet. When it comes time to remove the needle, the space the needle occupies will instantly be sealed due to all the pressure from around the pellet. Then you lock the pellet down tight in order for it to stay sealed during the additional added pressures applied to it from riding. I am literally uploading a FOX DPS video as I type this, which goes into the procedure details on how to fill the IFP chamber with either a hand pump or nitrogen system. It might help to better understand the process in order to make this all work. Thanks for the question
Glad to hear you liked the video. I've never seen a 3rd party needle similar to the one Fox makes. You can "technically" make your own. I posted a video that explains how to fill a pellet based shock with a hand pump. You can use that same setup with a nitrogen system as long as you have a valve and PSI gauge like the system in this video has. BUT,, There will be NO form of protection if you do this. The needle will always be exposed, and this can prove too to dangerous with nitrogen. You have to be ULTRA careful. You will also break needles randomly, as you do with hand pumps. I personally don't recommend this path. The FOX needle is a very safe and solid product. If you're willing to put the money in a nitrogen system, I wouldn't think twice about buying the fox needle. IF money is tight, see if you can get some ride buddies to pitch in, if possible.
Fantastic video ! Discovered your RUclips channel few months ago and I am a big fan, always waiting for a new video to be released. Looking on Amazon, there's a lot of different brands selling the regulator and hose. Is there one that you would recommend over the others ?
Thanks you for the kind comment. I am by no means a product expert in this area, but my understanding is Victor is a very reputable and reliable brand (sort of like the "snap on" of the industry) and I would have bought it I knew it back then. I bought a Uniweld RHP800, also a known and reliable brand. There are regulators on ebay, amazon etc, that sell for much less. I don't have any experience with them and don't feel comfortable buying based off reviews for a critical components like this. I would go to 2 or 3 local gas supply shops, or call them if you have any in your area, and have a conversation with the person. I find the people who run these shops are very down to earth and willing to be honest with their thoughts on products. You will have to go to them for refills, so its good to build a relationship with them 👍 I know this doesn't help much but hopefully it help some
New subscriber, i didn't even know you filled them from there dont think the new shocks have this only one on trunion shrader! Just checked my new float X it doesn't have this self healing screw type thing, is this an old system of fox? I've been out the MTB game for 20 years just getting back into it now got a mew emtb totally different feeling bikes the new geometry taking abit getting used to from the old kona and Giant atx full sus
Thanks for the comment and for subscribing. Some FOX shocks still use pellets, but the reservoir-style shocks have moved to a valve recently, which is more service-friendly. To fill a shock with a valve, all that is needed is a valve adapter for the nitrogen system. These are low-cost and can be bought at many places. Ultimately, unless you ride in really hot environments or on very long, aggressive runs with little break in between, air will do just fine. Just about every modern shock has two fill holes, one for the air can and the other for the IFP chamber. They serve different purposes. The Air can valve (the one on the eyelet) is used to adjust your shock sag. The IFP valve, which is either on the damper body on an inline shock or on the reservoir on a reservoir back style shock, is only filled once after the IFP has been set to the appropriate depth and the damper is properly bled. Hopefully this helps
how many uses do you get out of a pellet, im struggling with a home set up with a normal shock air pump in a rear maverick shock and im guessing you only get one go with the rubber?
I ALWAYS hated those pellets. I've never gone above two uses with one pellet. I replace them after a second use. But have to assume you can get more if you apply a good amount of pressure to the needle, which will be easier when using a nitrogen setup with the Fox needle since it's a stronger setup than using a needle with a hand pump. You can only apply so much pressure to the hand pump needle, or else you risk breaking it. You can buy the pellets online individually or in a pack.
Hopefully the video didn't turn you off to the idea of building a nitrogen system. If and those you ride with pitch in to build a system in order to lower the cost for everyone, then you all can service your shocks on the cheap every year. just a thought, which now that I think of it, I probably should have mentioned it in the video
Are you asking about the Rockshox high pressure 600 psi hand pump? you can get them just about anywhere. Right now planet cyclery has it for $32, which is a good price
What’s the advantages of nitrogen in air shocks? My dad frequently uses nitrogen in car tires, however I feel like the main benefit there is less air loss over time. I didn’t think rear shocks lose that much air compared to tires
Loss of air is possible but if your going to lose any gas (air/nitrogen) in a mtb shock, it's mostly going to be due to an IFP seal wearing more than anything Corrosion over time as nitrogen holds no moisture. I will say modern shocks not only have coatings on them to prevent this but are also built to not corrode easily. regular service of a shock will illuminate this "potential" issue. Heat build up over time in hot environments. IMO (and i'm sure some will disagree with what I'm about to say) this one is irrelevant for mountain bike shocks. It can possibly be an issue for dirt bikes, off-road vehicle, etc, as the forces on those shocks are MUCH greater over much longer periods of time. If anyone can provide any "real world" data that a mountain bike rear shock can be ridden to a point where heat build up is so significant that it would negatively impact a shock, I would love to see it. Not being facetious, I've literally never seen any viable data on this. Only word of mouth and bro science. Ultimately, keeping up with regular maintenance is the best return you can give yourself when it comes to shocks and forks. 👍
Dude their are videos of people dumping water on their shocks after a 45minute enduro run and steam pours off of it. So heat is a big issue it’s a small scale shock just the same but if you ride aggressive like me my fox float x2 gets really hot after long enduro runs. Especially in the desert. This is a mountain bike btw. That is the detriment. Super hot conditions, makes oil thin and o rings roll and ruin the seal surface. Do to … lack of lube. I’d say 99 % of all mechanical failures are from lack of lube, whether it’s over heated first, lack of oil in system. Nitrogen molecules are bigger and I think squish relatively consistent so their is that benifit to but we have a ton of nitrogen in our air anyways , what if we had an air dryer in the shock pump.
@@HeidiFegles I mentioned in my response to the person who posted the question that excessive heat is one of the issues that nitrogen helps with. But it's not as impacting to the vast majority of people unless your riding in the conditions you mentioned. If you get a chance send a link to the video you mentioned, think it would be cool to see as I haven't comes across one yet. 👍
Per FOX Specs "Charge the IFP chamber to 500 psi" The DPS has been 500 PSI for years, but remember, you don't "need" to use Nitrogen. Air will work just as good for the vast majority of people. But it is easier to fill this shock with the fox needle on a system like this.
Hi man, Where can I get the hexagonal tool that has the hole for the syringe to go through? The small round one that has a screw attached to it. Thanks for the information
Here is a link to the tool. when you get it you need to by a screw for it, which screws into the side of it in order to turn it easily. I would go for a longer screw for more leverage and space to turn it. let me know if you have any other questions www.treefortbikes.com/Fox-Pellet-Retainer-Tool-Nitrogen-Fill?adpos=&scid=scplp333222447147&sc_intid=333222447147&gclid=Cj0KCQjwqs6lBhCxARIsAG8YcDjjCzv8_PqH9eWlcjPb_rcxAXfFcD8PtZZdl8lDeDKk2PZ_8Rh3FwgaAuxWEALw_wcB
![I.N "HALLUCINATION" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/n5B5q1Hwt_U/mqdefault.jpg)
It is absolutely insane to me that you don't have more subscribers. I am a Moto mechanic and part time aircraft mechanic for a living so I am lucky enough to own or have access to most anything I need for suspension work (tools, supplemental supplies, nitrogen etc........) That being said I don't think most people realize just how valuable your content really is for a novice/home mechanic wanting the learn the craft. Good on you for thinking and taking time to brief folks on the potential dangers of nitrogen indoors. Keep up the good work man!
agreed bro..his contents is superrrrr valuable for beginners like me.
Wow! Thank you so much for such a thoughtful comment. There's no ruining my day after reading this first thing in the morning. looking forward to making more videos, and if there are ANY misses or improvements that you see or think can be made please feel free to share them for others as well as myself. there's always room to learn 👍
@@KillaForceCrew awesome to hear. if you have any questions or requests feel free to ask any time.
@@zoubtube Absolutely and will do 👌
I was just thinking the same thing! Great content.
I can't believe your channel doesn't have more followers. Fantastically explained at a level that is understandable to everyone, beautiful imagery and you don't forget safety. I myself am an ex hvac technician who has had a bikeshop for several years now, people underestimate the danger of nitrogen.
Thank you very much for the thoughtful comment. I was really hoping to get the safety message across because you're 100% right, nitrogen can become unsafe if not handled correctly.
Congratulations for the super great explanation and advice about wearing safety glasses, not to mention the clear and calm way of telling about details step by step!
Thanks you for such a thoughtful comment. It's Very much appreciated. Hopefully it comes in handy for you if you ever plan to put together a system like this
This has really helped me with my new setup. Thanks a ton 🤘
Glad to hear that the video was helpful. I'm planning to release a video this Monday (if I can finish editing it in time) that will highlight a great solution for easily filling Schrader type shocks. The solution seems to have fixed the pesky popping O-ring issue I've always faced with shock pumps. Stay tuned. It should be worth your time
I created almost exactly the same setup and already successfully filled my shock. Many thanks !
I'm glad to hear it worked out for you. Just remember to take safety into consideration, and it should work out well for you for a long time. 👍
Thanks so much for the time it took to create the video. As the first time ive ever commented on youtube, obviously i was impressed (and ya saved me 550 bucks. Thanx again😄
I'm happy to hear that the video worked out for you and super happy to hear that it saved you that kind of money. The system is easy enough to use, handle it with care and you'll do just fine with it. Thanks for the comment 👍
I really appreciate your time and effort to make this video! thank you so much, now i can uderstand much better how it works!!!! i cant say enough word to thank you
This is the good stuff! I’ve been searching for a video like this for ages. Thanks
Thanks! I literally just added the parts used in my system in the description section based on request. just make sure to make safety the high priority every time you use the system if you decide to build one. 👍
all your videos are absolutely informative and helpful.you should get more subscribers..kudos for these type of contents 👍👍👍👍
I love your video and thanks for it, but I would like to add something.!
Nitrogen give's your rubber o-rings and seals a greater chance at a long healthy life, with less contamination from water vapor's found in 'regular air'.
Those water vapors actually act as a catalyst, accelerating rust, corrosion and oxidation of your shock's rubber compounds/seals.
Thank you very much for the comment myman, and you do bring up a great subject.
I completely understand the concern. However, based on conversations with suspension experts, nitrogen offers limited benefits in most riding conditions. The only significant advantage is in very specific scenarios, like filling a shock with air in a humid environment and then riding aggressively in extreme heat. In such cases, water vapor can potentially affect the shock's performance.
As for corrosion, modern shock materials are highly resistant to corrosion. Aluminum components have protective coatings, and seals are typically made of rubber and are lubricated with grease, as is the IFP chamber walls (if properly serviced). Not only does this help with friction, but it also adds an added layer of corrosion protection as well. While moisture can theoretically cause corrosion over time, this is extremely unlikely in a well-maintained shock.
Both RockShox and Fox acknowledge that either nitrogen or air can be used, although Fox more often recommends nitrogen. Interestingly, FOX has posted a few videos over the years showing their own service techs servicing shocks for professional at race events. In EVERY video, they fill the IFP chamber with air. Not once have I seen them use nitrogen, and this is high-stakes racing situations where performance is paramount.
I certainly have nothing against using nitrogen. In fact, I use it frequently during service, especially with popular shocks like the DPS. It's simply more convenient for me. However, I don't think most people need to invest in a nitrogen system, as air works perfectly fine in most cases.
What's more important to me is that riders stick to their 50-hour and 200-hour service intervals. Regular maintenance not only ensures optimal performance but also extends the life of their suspension components. And that's good for everyone. 👍
Again, thanks for the comment
Excellent video. FWIW; recently my Fox safety needle failed after a few years of use. It’s not at all serviceable. I’ve been in contact with Fox and repeatedly denied the purchase of a replacement.
Well that sucks! I never looked into the warranty on these things ( I have no idea how long they are expected to last, but so far so good). I know they can be sent to FOX for service, but my guess is the price will probably end up being close to a new needle for doing so. interested to see how it all pans out for you
your videos are awesome. I being servicing suspension for the last 10 years. Can you tell me the parts number to get me the full nitro system? I will highly appreciate it. I do have a bike mobile shop (Cycledelic bike shop)
Sorry for the delayed response, but I've been OOO. The Description section has links (which, surprisingly, still work) to pretty much all the parts to this setup. As for a tank, I would check marketplace, Craigslist, etc, for any used tank at the lowest price and bring it to a fill station. Nitrogen works like propane, they replace the tank at the cost of the nitrogen only.
I have no affiliation with any of the links, so you can use them as a reference to find similar products at lower prices. The only thing I wouldn't skimp on is the regulator. There are many lower cost regulators out there, but I feel going with a reputable brand should have its benefits.
Excellent video!! Any recommendations where one could procure the air valve assembly and adapter?
Thanks for the comment. I'll put the parts I have in my setup in the description if that helps. 👍
Thanks man! As always, very valuable content.
Thank you sir, as always let em know if there are any questions,
Hello. Good day, I'm building a nitrogen system following your recommendations in this video. I'm wondering how to fill with nitrogen those Fox shocks that have piggybacks? Since must of them use Schrader valves, I guess I don't need the safety needle (which I already have), but some type of nozzle that allows to connect the 1/4" NPT from the hose to the 8mm schrader valve. Could you please guide me in the type of nozzle needed for the job? Thank you in advance. Cheers.
What a great mind-meld! I'm actually in the process of developing a new solution that utilizes two promising options. I'm confident that one of them will be ideal for effortlessly switching between needle and Schrader setups, and it will also resolve the persistent problem of damaged Schrader adapter seals. If everything goes according to plan, I'll release a video this month. So, if you're not in a rush, I'd recommend keeping an eye out for it.
@zoubtube that is great. I'll be looking forward to that episode. Cheers.
Do wrap the threads of the regulator with teflon tape before installing on the tank? Thx
yup. I wrap plumbing tape on all connections. just make sure none of the holes get blocked
Hi, you make in depth awesome videos, can you tell me if the small nitrogen fill spanner in your video comes with the fox nitrogen needle or not as I cant seem to find it as a seperate part number or part of the fox needle kit anywhere on internet, would much appreciate your help ? Cheers Simon
Merry Christmas simon. wishing you and yours a warm and safe holiday season. All the parts are seperate purchases for the most part. The fox needle includes only the needle itself as a full mechanism, The pelet inflator tool that actually attaches to the shock in order to fill it is a serpreate purchase. Any additional adapters are purchased separately as well. I have a list of links to parts that can help you build a system in the description section. though you can build a system like this in many different ways, I find the system as seen in this video is the most efficient for me based on how I use it. Let me know if there are any other questions
@@zoubtubeI don’t see this tool in the description and also haven’t been able to find it online.
Hi, I recently came in possesion of a float rp23. In order to orientate the mounting in the right direction I released the pressure on both ends of the damper (my bad). And its been a pain trying to find out what is the right pressure on the lower part of the damper. I see you going up to 500psi, is this down to rider weight or just a global setting? My damper pump only goes to 300psi, any ideas on how I might solve this? Ty so much for the video as its the only I could find on this topic!
This is a tough one. There are many variables in that version of shock, but the ifp chamber is not going to be 500psi for that model. On the shock, do you see anything that says "valve tune" with a "number" next to it (ex: 200, 250, 400, etc.)? If yes, then this is your IFP PSI. Let me know.
@@zoubtube Thanks for the reply! And yes its tricky trying to find out which I exactly have (previous post has a typo: its an rp2 not rp23). It has no markings or text on the damper except make and model. When doing an image search none of the ones I find have a valve on the lower chamber like mine has, so its kinda weird.
I did try inflating it with a fork pump today and when both chambers are filled it doesnt want to dampen at all.
So I guess I will need to tinker around to see what gives good results 🫤
@@martijnt1353 For an RP2 I would try an IFP depth of 60.96mm (~2.4") and 400PSI in the IFP chamber. When done, test it by compressing the shock without the air can. if you can't fully bottom it out, that means you're hydrolocked, which means your IFP is too low. To solve this, you can SLOWLY, and I mean VERY slowly, release oil from the bleed port. Open a bleed port a TINY bit, so a few drops of oil come out. Then close it, test to see if it bottoms out, and by bottoms out, I mean you feel the bumper. Repeat until it bottoms out. Let me know how it goes
@@zoubtube Alright, have also had contact with the tech centre of Fox. They said the baseline for the IPF chamber should be 300psi. But they also stated mine has been modified by a previous owner by adding a schrader valve so that might be a slight change to the chamber volume. This was probably done so that it could be filled without a needle.
@@martijnt1353 Interesting. Looking at an old fox service chart I see the following for the RP2. But who knows, things might have changed. The reason I picked 2.4" depth as a starting point is I assumed your shock was 7.875" or less since these were very common. If it turned out your shock was smaller, then it would be easier to raise the IFP by slowly letting a bit of oil at a time to get to the proper IFP depth, as opposed to opening the damper to add more oil. Let me know how it goes.
RP2 & RP3 IFP Depth IFP PSI
5.5 x 1.0 1.4 400
6.0 x 1.25 1.6 400
6.5 x 1.5 1.9 400
7.25 x 1.75 2.1 400
7.5 x 1.75 2.25 400
7.5 x 2.0 2.25 400
7.875 x 2.0 2.25 400
7.875 x 2.25 2.4 400
8.5 x 3.0 2.65 400
9.5 x 3.0 3.075 400
supercool info, love the safety first advices! thank you! I might say this will work with any system, all we gotta do emos change needles ? or would that fox needle work for Öhlins, Rockshox etc ! thank you !
Glad to hear the video was helpful for you. Different brands use different heads to fill their shocks. With a system like this you can swap the head for the brand shock you want to fill. ex needle with fox, Schrader with rockshox. in some case you would need adapters, example filling a FOX transfer post. hopefully this helps
Nice Video! Is there a video where you show your workflow with the pump? If not, I will appreciate it.
thanks. I'm assuming you mean filling up an IFP chamber with a hand pump and nitrogen needle. I've posted some FOX shock videos that go over this as I expect this would be the scenario for the majority of people since its a much more cost effective solution over all. if you meant something else, let me know and I'll try to better answer your question
Hello. Thanks for this great video. I would like to know if the tool used over the needle comes within fox's safety needle kit. Thanks in advance. Cheers.
Apologies for the delayed response. Unfortunately not, the FOX pellet retaining tool is a separate purchase. I'd look around for the best price. below is a link that might help
www.treefortbikes.com/Fox-Pellet-Retainer-Tool-Nitrogen-Fill?adpos=&scid=scplp333222447147&sc_intid=333222447147&gad_source=1&gclid=CjwKCAjwhvi0BhA4EiwAX25uj19fIPt6iPAZpS3JljNiU1DAcDXboqpFiW4gdxkaQ7Ky3Kd_icRv8RoCps4QAvD_BwE
@@zoubtube Thank you very much.
Greetings, What is the part number for the Fox Bleed port tool> ?
I'm assuming you mean the FOX nitrogen needle for filling the FIP chamber. its Part number 802-01-000. It's pricey, but it s a SOLID tool
Hi man, Where can I get the hexagonal tool that has the hole for the syringe to go through? The small round one that has a screw attached to it. Thanks for the information
here you go. its a fox pellet retainer tool. if you buy it you will need to buy a bolt for it, which you can find at a local hardware store. cost about 50 cents. I would go with a longer bolt though so you can have more leverage
www.treefortbikes.com/Fox-Pellet-Retainer-Tool-Nitrogen-Fill?adpos=&scid=scplp333222447147&sc_intid=333222447147&gclid=Cj0KCQjw8NilBhDOARIsAHzpbLCmjBQ1yTWEFLA5JKO12AHQ55BqjwfXOjoIDoI73nAYOi0XqBdkSrIaAsyBEALw_wcB
reqainter
I’m curious how the nitrogen didn’t escape before you tightened the pellet fastener, after removing the shock from the injection needle? Help me understand.
Great question. The pelt is basically self-healing when under pressure. After inserting the needle through the pellet into the IFP chamber, the pellet-retaining screw needs to be tightened to a point where it applies pressure to the pellet, which in turn applies pressure around the needle. The trick is to not apply too much pressure to the point where you won't be able to pull out the needle, or potentially break it. Adding gas to the IFP chamber ends up applying even more pressure to the pellet. When it comes time to remove the needle, the space the needle occupies will instantly be sealed due to all the pressure from around the pellet. Then you lock the pellet down tight in order for it to stay sealed during the additional added pressures applied to it from riding.
I am literally uploading a FOX DPS video as I type this, which goes into the procedure details on how to fill the IFP chamber with either a hand pump or nitrogen system. It might help to better understand the process in order to make this all work.
Thanks for the question
I like the video a lot Please help me where would I get the needle from or something equivalent I don't really want to spend $100 for the needle
Glad to hear you liked the video. I've never seen a 3rd party needle similar to the one Fox makes. You can "technically" make your own. I posted a video that explains how to fill a pellet based shock with a hand pump. You can use that same setup with a nitrogen system as long as you have a valve and PSI gauge like the system in this video has. BUT,, There will be NO form of protection if you do this. The needle will always be exposed, and this can prove too to dangerous with nitrogen. You have to be ULTRA careful. You will also break needles randomly, as you do with hand pumps. I personally don't recommend this path. The FOX needle is a very safe and solid product. If you're willing to put the money in a nitrogen system, I wouldn't think twice about buying the fox needle. IF money is tight, see if you can get some ride buddies to pitch in, if possible.
Fantastic video ! Discovered your RUclips channel few months ago and I am a big fan, always waiting for a new video to be released.
Looking on Amazon, there's a lot of different brands selling the regulator and hose. Is there one that you would recommend over the others ?
Thanks you for the kind comment. I am by no means a product expert in this area, but my understanding is Victor is a very reputable and reliable brand (sort of like the "snap on" of the industry) and I would have bought it I knew it back then. I bought a Uniweld RHP800, also a known and reliable brand. There are regulators on ebay, amazon etc, that sell for much less. I don't have any experience with them and don't feel comfortable buying based off reviews for a critical components like this. I would go to 2 or 3 local gas supply shops, or call them if you have any in your area, and have a conversation with the person. I find the people who run these shops are very down to earth and willing to be honest with their thoughts on products. You will have to go to them for refills, so its good to build a relationship with them 👍 I know this doesn't help much but hopefully it help some
New subscriber, i didn't even know you filled them from there dont think the new shocks have this only one on trunion shrader! Just checked my new float X it doesn't have this self healing screw type thing, is this an old system of fox? I've been out the MTB game for 20 years just getting back into it now got a mew emtb totally different feeling bikes the new geometry taking abit getting used to from the old kona and Giant atx full sus
Thanks for the comment and for subscribing. Some FOX shocks still use pellets, but the reservoir-style shocks have moved to a valve recently, which is more service-friendly. To fill a shock with a valve, all that is needed is a valve adapter for the nitrogen system. These are low-cost and can be bought at many places. Ultimately, unless you ride in really hot environments or on very long, aggressive runs with little break in between, air will do just fine. Just about every modern shock has two fill holes, one for the air can and the other for the IFP chamber. They serve different purposes. The Air can valve (the one on the eyelet) is used to adjust your shock sag. The IFP valve, which is either on the damper body on an inline shock or on the reservoir on a reservoir back style shock, is only filled once after the IFP has been set to the appropriate depth and the damper is properly bled. Hopefully this helps
how many uses do you get out of a pellet, im struggling with a home set up with a normal shock air pump in a rear maverick shock and im guessing you only get one go with the rubber?
I ALWAYS hated those pellets. I've never gone above two uses with one pellet. I replace them after a second use. But have to assume you can get more if you apply a good amount of pressure to the needle, which will be easier when using a nitrogen setup with the Fox needle since it's a stronger setup than using a needle with a hand pump. You can only apply so much pressure to the hand pump needle, or else you risk breaking it. You can buy the pellets online individually or in a pack.
Man that was intense
Hopefully the video didn't turn you off to the idea of building a nitrogen system. If and those you ride with pitch in to build a system in order to lower the cost for everyone, then you all can service your shocks on the cheap every year. just a thought, which now that I think of it, I probably should have mentioned it in the video
Where can I get that manual pump?
Are you asking about the Rockshox high pressure 600 psi hand pump? you can get them just about anywhere. Right now planet cyclery has it for $32, which is a good price
Nice video ☺️
Glad to hear that you found the video helpful. let me know if there are any questions
Hey how are you? this will works with Ohlins shocks?
Yup! Just make sure your shock uses either the needle (which is most likely the case) to fill the IFP chamber, or a schrader valve adapter
What’s the advantages of nitrogen in air shocks? My dad frequently uses nitrogen in car tires, however I feel like the main benefit there is less air loss over time. I didn’t think rear shocks lose that much air compared to tires
Loss of air is possible but if your going to lose any gas (air/nitrogen) in a mtb shock, it's mostly going to be due to an IFP seal wearing more than anything
Corrosion over time as nitrogen holds no moisture. I will say modern shocks not only have coatings on them to prevent this but are also built to not corrode easily. regular service of a shock will illuminate this "potential" issue.
Heat build up over time in hot environments. IMO (and i'm sure some will disagree with what I'm about to say) this one is irrelevant for mountain bike shocks. It can possibly be an issue for dirt bikes, off-road vehicle, etc, as the forces on those shocks are MUCH greater over much longer periods of time. If anyone can provide any "real world" data that a mountain bike rear shock can be ridden to a point where heat build up is so significant that it would negatively impact a shock, I would love to see it. Not being facetious, I've literally never seen any viable data on this. Only word of mouth and bro science.
Ultimately, keeping up with regular maintenance is the best return you can give yourself when it comes to shocks and forks. 👍
Dude their are videos of people dumping water on their shocks after a 45minute enduro run and steam pours off of it. So heat is a big issue it’s a small scale shock just the same but if you ride aggressive like me my fox float x2 gets really hot after long enduro runs. Especially in the desert. This is a mountain bike btw. That is the detriment. Super hot conditions, makes oil thin and o rings roll and ruin the seal surface. Do to … lack of lube. I’d say 99 % of all mechanical failures are from lack of lube, whether it’s over heated first, lack of oil in system. Nitrogen molecules are bigger and I think squish relatively consistent so their is that benifit to but we have a ton of nitrogen in our air anyways , what if we had an air dryer in the shock pump.
@@HeidiFegles I mentioned in my response to the person who posted the question that excessive heat is one of the issues that nitrogen helps with. But it's not as impacting to the vast majority of people unless your riding in the conditions you mentioned. If you get a chance send a link to the video you mentioned, think it would be cool to see as I haven't comes across one yet. 👍
500 psi ? Thought it should be 200 psi ? Where you get the spec ?
Per FOX Specs "Charge the IFP chamber to 500 psi" The DPS has been 500 PSI for years, but remember, you don't "need" to use Nitrogen. Air will work just as good for the vast majority of people. But it is easier to fill this shock with the fox needle on a system like this.
Great video
Glad you found it informative. if you have any questions let me know
excellent!!
Thanks. If you have any questions let me know
Hi man, Where can I get the hexagonal tool that has the hole for the syringe to go through? The small round one that has a screw attached to it. Thanks for the information
Here is a link to the tool. when you get it you need to by a screw for it, which screws into the side of it in order to turn it easily. I would go for a longer screw for more leverage and space to turn it. let me know if you have any other questions
www.treefortbikes.com/Fox-Pellet-Retainer-Tool-Nitrogen-Fill?adpos=&scid=scplp333222447147&sc_intid=333222447147&gclid=Cj0KCQjwqs6lBhCxARIsAG8YcDjjCzv8_PqH9eWlcjPb_rcxAXfFcD8PtZZdl8lDeDKk2PZ_8Rh3FwgaAuxWEALw_wcB
Thanks for the information 👍🏻👍🏻
Just bought the pellet retainer tool and I am wondering what screw fits in it ? is it a special thread pitch? metric ?@@zoubtube