Loved the video Neko! Thank you. Neko covers all the bases really well, as you might expect, but there is one little mistake about the material. He says the non-Reynolds parts are mild steel. They aren't, the laser cut parts are S515 high strength steel, and the head tube T45 steel. Just didn't want anyone getting the idea we built some of the frame out of gas pipe!
Rapid prototyping your own DH bikes without a corporate sponsor is already so cool. But I never would have dreamed somebody would try out a steel DH bike in the modern era. I agree that the head tube is too big. You should test whether the gussets are necessary either. The bike will likely become too flexy rather than breaking outright. There is also a huge amount of options in butted crmo tubing. Awesome stuff!
I love what you're doing. I'm a bike mechanic I like working on bikes. I love everything about bikes. What you're doing is awesome, keep kicking a** And doing what you need to do to be the man of what you're doing.❤
Thanks for all that info, starting my first chromoly frame this week; some thoughts I had, better yet worries have been put to rest. Just gotta Send It!
Love all the tech info on this endeavor…..keep them coming! How much would it cost to have Jeff as your full time bike washer? He personally delivered parts for 1k, so there has to be a price for washing bikes in a halter top! Glad to hear you are almost ready to get back on the bike. Can’t wait to see you crushing it again.
I would say once you strap 1kg of extra suspended mass to the alu bike the difference in trail chatter will become very minimal between the two bikes. And the biggest gap would be between full alu vs carbon/steel.
Sweet 👍Been waiting for an update, was hoping that you'd had a chance to get on it by now, glad you're only a little bit a way from being cleared to ride, looking forward to hearing your thoughts on the steel vs alu side of it. You mentioned the main lower rocker pivot setup using a 1.125" HT setup, but didn't mention if the actual axle it's running on is 1.125 or if you're running bigger bearings for robustness - also would guess running full compliment vs caged bearings for a normal headset.
It's not exactly a headset on it's side. Neko uses 17mm diameter axles, and I know from years of experience that getting bearings to press directly into a thinwall steel tube that has been distorted by welding is a hiding to nothing, so I adapted the idea we use on the Cotic bikes. We use 15mm diameter axles so we use head tube material for a 1 1/8" headset with custom sized cups that hold the bearings and press into the tube after it's been reamed with a regular head tube reamer. With Neko's axle and bearings being a little bigger, I had to move the tube up to the 44mm size you would normally see on the front end of a steel frame. So, still reamed with a head tube reamer, but different cups and bigger bearings than a Cotic so it works with Neko's rear end. It's just the best way I know to get consistent bearing fit on something like this.
@@CoticBikesUK Thanks for taking the time to reply and give an in depth explanation, makes perfect sense, smart, simple solution to a common problem when working with tight tolerances and materials that "move" when heated/welded. Also, no worries really about bearing seats getting trashed having the press in cups.
Love these detailed vids. I am about to build my first steel frame and these vids get me stoked. Whats the reasoning behind dipping the frame and painting it, as its a prototype with a short life span?
Dipping gets the internals of the tube (make sure to design drain holes in all of the tubes) coated with the rust prevention whereas paint can only be applied to the exterior faces.
Be carefull with the length of the gusset plates at the front triangle,if the tubing is really thin at the point where the gusset plate length finishes, the tubes both top and bottom will form a crack right at the end of the gusset.Hope I've made sense.
You have to make sure not only the weight, but also the rotational inertia is the same. for example you might have to add weight near the headtube to compensate for the heavy steel tube there. whoevers in charge of the cad-model can help you with that :)
Great video!! What thickness is used on the gussets and the frame mount? I really appreciate that you share the dimensions and thickness of the tubing! 👌🏻
Reminds me of Tomi misser's Kona from the late nineties, I loved & lusted after that bike, the main pivot cups are genius, be honest did you practice saying Edinburgh, most Americans butcher it, for all your fellow Americans say Edin br. 😁
Yes, the white is sick. What was the E-coat that you had applied to the inside of the tubes to prevent rust? Thank you for all the info on the frame and tube sizes. You’re a huge inspiration for building my own steel frame. Hope you’re back to racing soon! Always rooting for you!
when this channel came with the idea of building a personalized frame for Neko and share videos about it, I honestly thought we were gonna get content with the quality of the first 2 Grim Donut videos, but now, it is just 10 minutes of Neko siting by his bike talking to the camera, no disrespect, but come on, the potential was there or maybe is still there, i don't know, so much engineering so much ideas and no graphic content to explain. anyways... cheers!!!
The grim donut videos were entertaining, but not informative like Neko is. If I may paraphrase: we can take the super nerdy engineering details! No holding back 😊
Loved the video Neko! Thank you.
Neko covers all the bases really well, as you might expect, but there is one little mistake about the material. He says the non-Reynolds parts are mild steel. They aren't, the laser cut parts are S515 high strength steel, and the head tube T45 steel. Just didn't want anyone getting the idea we built some of the frame out of gas pipe!
If you could release this frame to the public that would be cool, not many steel DH bikes around
@@kingflynxi9420 Thanks, it is really cool, but it's up to Neko to get them on sale. All the suspension and rear end is his.
@@CoticBikesUK here's hoping he gives it the ok
Thanks for the clarification. I squirmed a bit when he said mild steel.
@CoticBikesUK i'm planning to build a bike out of 304 stainless, I know it not ideal, but whats your take? Will it be alright?
Rapid prototyping your own DH bikes without a corporate sponsor is already so cool. But I never would have dreamed somebody would try out a steel DH bike in the modern era. I agree that the head tube is too big. You should test whether the gussets are necessary either. The bike will likely become too flexy rather than breaking outright. There is also a huge amount of options in butted crmo tubing. Awesome stuff!
Great video. The steel frame came out sick, they did a great job.
I love what you're doing. I'm a bike mechanic I like working on bikes. I love everything about bikes. What you're doing is awesome, keep kicking a** And doing what you need to do to be the man of what you're doing.❤
That lower shock mount is a really cool feature and idea.
I love how far the bikes have come in the past few years
Heal up Neko! Can't wait to see you back out on the hill.
soo cool to hear all the details you are focusing on! ☺️ thanks for the nice videos!
Thanks for all that info, starting my first chromoly frame this week; some thoughts I had, better yet worries have been put to rest. Just gotta Send It!
What a cool bike, well done Cy
love the intro and love the videos
Love all the tech info on this endeavor…..keep them coming! How much would it cost to have Jeff as your full time bike washer? He personally delivered parts for 1k, so there has to be a price for washing bikes in a halter top! Glad to hear you are almost ready to get back on the bike. Can’t wait to see you crushing it again.
I would say once you strap 1kg of extra suspended mass to the alu bike the difference in trail chatter will become very minimal between the two bikes. And the biggest gap would be between full alu vs carbon/steel.
Sweet 👍Been waiting for an update, was hoping that you'd had a chance to get on it by now, glad you're only a little bit a way from being cleared to ride, looking forward to hearing your thoughts on the steel vs alu side of it.
You mentioned the main lower rocker pivot setup using a 1.125" HT setup, but didn't mention if the actual axle it's running on is 1.125 or if you're running bigger bearings for robustness - also would guess running full compliment vs caged bearings for a normal headset.
It's not exactly a headset on it's side. Neko uses 17mm diameter axles, and I know from years of experience that getting bearings to press directly into a thinwall steel tube that has been distorted by welding is a hiding to nothing, so I adapted the idea we use on the Cotic bikes. We use 15mm diameter axles so we use head tube material for a 1 1/8" headset with custom sized cups that hold the bearings and press into the tube after it's been reamed with a regular head tube reamer. With Neko's axle and bearings being a little bigger, I had to move the tube up to the 44mm size you would normally see on the front end of a steel frame. So, still reamed with a head tube reamer, but different cups and bigger bearings than a Cotic so it works with Neko's rear end. It's just the best way I know to get consistent bearing fit on something like this.
@@CoticBikesUK Thanks for taking the time to reply and give an in depth explanation, makes perfect sense, smart, simple solution to a common problem when working with tight tolerances and materials that "move" when heated/welded. Also, no worries really about bearing seats getting trashed having the press in cups.
I would love to see some testing where you add lead weights to the suspended mass to see if you can feel a difference
Love these detailed vids. I am about to build my first steel frame and these vids get me stoked. Whats the reasoning behind dipping the frame and painting it, as its a prototype with a short life span?
Dipping gets the internals of the tube (make sure to design drain holes in all of the tubes) coated with the rust prevention whereas paint can only be applied to the exterior faces.
Very much want one of these, carbon rear end and steel front would be the sex!
Be carefull with the length of the gusset plates at the front triangle,if the tubing is really thin at the point where the gusset plate length finishes, the tubes both top and bottom will form a crack right at the end of the gusset.Hope I've made sense.
You have to make sure not only the weight, but also the rotational inertia is the same. for example you might have to add weight near the headtube to compensate for the heavy steel tube there.
whoevers in charge of the cad-model can help you with that :)
Great video!! What thickness is used on the gussets and the frame mount? I really appreciate that you share the dimensions and thickness of the tubing! 👌🏻
I like a weighted frame so much I packed a 720Wh battery in my downtube 🤪
Reminds me of Tomi misser's Kona from the late nineties, I loved & lusted after that bike, the main pivot cups are genius, be honest did you practice saying Edinburgh, most Americans butcher it, for all your fellow Americans say Edin br. 😁
nice, than you
7:07 i wonder how much of that is the actualy material itself and how much of that is the 1kg extra sprung mass
haha i was just about to comment you should add weight to the aluminium frame and then you already adressed all these points 😁
Yes, the white is sick.
What was the E-coat that you had applied to the inside of the tubes to prevent rust?
Thank you for all the info on the frame and tube sizes. You’re a huge inspiration for building my own steel frame. Hope you’re back to racing soon! Always rooting for you!
Zinc phosphate dip.
I remember in my engineering degree, the combination of galvanized and painted had crazy resistance to oxidation. Glad to see this is built to last!
@@CoticBikesUK Awesome, thank you so much Cotic! You guys rock!
I’d ride your frames. Love steel steel is real
I want one for parks big enduro bike I can still pedal
What happened to the 5dev enduro cranks you were running?
7:20 Shots fired at Logan
look how fucking shredded his bicep is...god damm
Steel has always been real... As water has been wet.
Will someone be racing this at Rock Creek?
if u sel your bikes i definiteli buy that
Why do we see gazzillions of riders running coil shocks/ but not seeing as many running coil forks?
steel is real, coil for feel
Do you by any chance know the radius and degree of bend of your down tube?
It's currently a 45 deg bend on a 114mm CLR. The bends were pulled pre-heat treatment by a place that makes roll cages for rally cars.
Reserve logos covered up, bit short sighted by them 🙁
"Frameworks -- ride hard. Don't let it look pretty." /;;/
I think it looks gorgeous!
Hope your doctor gives you the green light
when this channel came with the idea of building a personalized frame for Neko and share videos about it, I honestly thought we were gonna get content with the quality of the first 2 Grim Donut videos, but now, it is just 10 minutes of Neko siting by his bike talking to the camera, no disrespect, but come on, the potential was there or maybe is still there, i don't know, so much engineering so much ideas and no graphic content to explain. anyways... cheers!!!
The man has barely been able to walk for 3 months, give him a break.
The grim donut videos were entertaining, but not informative like Neko is.
If I may paraphrase: we can take the super nerdy engineering details! No holding back 😊
If you actually watch his videos he broke his hip.
Just like his bike, these vids aren’t made to look pretty, they’re made to perform. He’s killing it, IMO.
Edinburgh .... /ˈed.ɪn.bər.ə/
Just saying. ❤🏴❤