How to repair stripped pedal threads on the crank arm with Unior bushing and a pedal tap.
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- Опубликовано: 29 сен 2019
- How to repair stripped pedal threads on the crank arm. In this video, I use the Unior pedal tap repair kit. It comes complete with the two in one reamer and thread tap and the left and right bushings (Helicoil). You just need to purchase a heavy-duty thread locker such as Loctite 271 Red and a T-handle tap wrench to fit the reamer. Down below is the link to locate the tools and the parts. Please shop around before buying it.
Left side Unior pedal tap amzn.to/3LeeJlS
Right side thread spike insert amzn.to/359nTAN
Unior Pedal tap kit:
www.amazon.com/Unior-Pedal-Ta...
Loctite Red 271: www.amazon.com/Loctite-Thread...
T handle wrench (at least 1/2"): www.amazon.com/Hanson-12002-T...
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I learned a lot about right crank threads and right pedal repairs
Thank you for this. You gave me hope to revive my smart bike which has the crank threads stripped.
Thank you! Just threaded my left Chester pedal in and it went in like butter. My right went in smooth half way then I encountered resistance. Wrenched on the pedal all the way and I thought stripped out the threads. Looking at the back side of the crank I can see the threads are somehow smashed Flat completely. This kit will come in handy! Thank you.
Your welcome Jason!
You're the Greatest. I bought a reconditioned spin bike eight years ago (I know...I know... you live and you learn) and I immediately used it. Within two days the right hand pedal fell off. I examined the pedal threads and they were stripped and the pedal crank as well. Since that time it became a paper weight until I saw your video and right away it made sense. I checked off all the tools and materials that I would need from your video and waited a month for all of it to eventually be delivered. The Unior bushing and the pedal tap took the longest to arrive since they were out of stock domestically, they were ordered from Spain and France respectively. I reviewed your video countless times to detect any nuances that might benefit a successful repair. Aside from that I checked other taps and bushings that were sold on Amazon and the reviews were discouraging. Most of the purchasers revealed horrible results. Finally I was able to use all the tools, parts, cutting oil, thread locker, and air canister in your video to commence with my repair work. It only took five minutes from start to finish. It was successful and I couldn't be any happier. I 'm allowing the Loctite thread locker to set a couple of days.
Thats great Ricky! Glad I could help. The job seems a little daunting at first but 5 minutes proves otherwise.
Question: If I am repairing the left pedal instead (vs. the right in the video), does the coil and threading tool go in clockwise also? (I understand for the left side, the pedal tightens counter clockwise). Thank you.
This saved me so much money. Appreciate it
👍🏽your welcome ⚙️
Great video and very self explanatory! Ordering my repair kit today. Thanks for sharing.
Your welcome Diana!
where did you order them from, I can't find them in stock anywhere.
This is a great video. You have a pleasant on-camera demeanor. You speak clearly and the video shows precisely what to do. Great work. (Oh, I think you are the doppelganger of Sanjay Gupta.)
Thanks! I thought I'd need to replace my crank. Ill comment when I'm done. 👌🏼
Same, this happened on my moms bike while i was riding it and she was so worried lol
Ah finally found the right video solution and the products I need to order. Thank you, you solved a problem nagging me for weeks!
You need to reverse the tap around every turn to get rid of any steel chips. former machinist.
I''m not a machinist and even I knew that.
Thank you, I knew that a million years ago and totally forgot that part!
@@donnimetropolis9899 its ok OLD man..PSH
@@MrJx4000 WELL CONGRADULATIONS....PSH thank you for your Humility...Unreal..
@@clinteast7476, why don't you learn how to spell clinteast; it's "congratulations", and you're welcome (a year later? ;-)
Like many of you that have experienced this I had spent hours trying to figure out the best solution to fix this problem the bike shops were charging high prices and the unior kit itself was too expensive being from the uk I tried to source the pedal tap but was costing too much to have it shipped here. I had the threaded crank issue on my drivers (right hand) side so here’s what I did(extremely simple did not require any vices/ grips or unnecessary attachments. After waiting ages I managed to source a single unior pedal tap from *deporvillage* and a helicoil from *sjs cycles* all in all I spent £42 for these 2 items I simply laid my bike upside down used an adjustable wrench to turn the pedal tap once it was inserted in the crank and simply turned. The measurements confused me as I had no idea what size helicoil or pedal tap I would need but I believe more than likely most bikes nowadays have the measurements of 9/16 which could also be called 5/8. Make sure when purchasing that the measurements of the helicoil and unior pedal tap are the same for example my bike required a 5/8X 24 also seen as 9/16X24 I made the mistake of purchasing a pedal tap off of eBay and the size was 5/8X20 which also did not thread correctly 🤦🏽♂️avoid buying cheap to save money and purchase the unior tap. Also thanks to the creator of this video made this extremely easy to follow
👍🏽 thanks
I just had a Crank Arm Thread issue a couple of days back. After some attempts finally found the solution through a Local Forge expert, who used the same rethreading tool (eventually arm thread was fine, only it needed a torsional forces with a heavy thread sleeve).
Was talking about this frequently during the whole time & RUclips comes with this today !
SCARY AI & Tech !
Scary interesting.
man i thought i needed a whole new crank set thank you!
Your welcome Eric.
EXACTLY WHAT I NEEDED!!! THX- I stripped my statist left bike pedal crank arm.... your a life saver☆☆☆☆☆
sameeeee😭
Awesome, thank you!!
Thank you, I’m going on a long journey to save my exercise bike. I thought there was something wrong with the pedal and just kept screwing in back in. Needless to say, I destroyed the crank threads and am mentally kicking myself. Your video explained a lot and at least I know where to start.
How'd it go?
So, I tried to buy all the stuff, then I realized I would need shop space and clamps. So I searched around for bike shops and I found a really neat shop in Cruces. The lady there just replaced the cranks and gave me brand new pedals! Only 20 bucks the first time for new cranks. Then I stripped one of the cranks while exercising, so then she replaced both cranks again and gave me real bike pedals for another 20. My bike’s been working wonderfully ever since!
You are a life and money saver sir. Thank you so so much!
Your welcome. Did you end up buying the repair tool?
Your video was use full thank you
Thank you this was really helpful.
Really understood...quite clear...will try doing my own because your video was clear
Oh cool!! Thanks
Oh cool!! Thanks
Thanks for this. Great video.
You are welcome Michael!
Nice video! Thanks for an awesome tutorial
Your welcome, thanks for the comment.
Great video, clear explanation!
Thank you, much appreciated.
i think i may have runied my thread on my giant tcr, but after watching this im not to worried as you explained it so well to fix..
That’s good. You may try to clean up the threads if there are the majority that are ok. If not then new threads will need to be made.
I loved the video, so thank you for that. I understand these are special tools. Now... $178 + $11 = $189 --> Almost $200 to be able to perform this service is a little too much. Unfortunately, it looks like it would be cheaper (and easier) to order new crank arms and just replace it.
I agree, that is a valid option. I believe some shops are charging about $20 for part and labor. That sounds pretty cheap and would double check on that.
I would love to find any shops around here that would charge just $20 for this service, that is a really fair price. That indeed sounds like a great deal! I currently have a shimano ultegra left crank with this problem, which makes it a somewhat expensive replacement (for me) that would be ideal for this solution (instead of replacement). I am really glad you posted this video, so I can show people exactly what I am looking for in terms of service. I'll keep looking, thanks once again.
I have to say this is the first video of this type of tutorial I have been privileged to see. Excellent example thank you !
@@sirhconardem7749 Many thanks!
The kit shown is not intended for the consumer. Why would one person with one stripped crank thread need ten or 20 thread replacements? They wouldn't! Plus, buying all the tooling for one repair is not cost effective by itself. The cost of this tool set is for the bicycle repair shop.
An hour of shop time plus parts puts you probably at about $60 for the repair, making it a cost-effective solution.
And some shops may be willing to perform this for less; it just depends on location.
For the last part of the process, it works out easier if you thread the new bushing ( Helicoil ) onto the pedal first, then use the pedal as a delivery system for introducing the bushing into the crank.
Helped a lot thank you very much
Your welcome Martin!
Thank you for very informative video💯🙌
Your welcome Nazz!
I bought used Dahon vybe D7 folding bike. The pedal is foldable. It wad broken today. Could it be fixed ?
thanks
Can you do this on a chromoly crank arm? I have re-thread alloy before but I do know chromoly is a harder steel. ?? Any replay
Thanks for sharing! Just have to find that union kit, have not been able to locate yet.
Ya, it seems one company makes it, but no where to be found.
Beautiful video
Thanks.
I have a carrera vendetta what size should the thread insert be?
Thanks for this tutorial. I just bought a vitus nucleus and ony first ride pedal gor loose and came a bit off. Then i noticed a bit stripped thread. Can I claim warranty on this?
Can this be done on a fork for stripped brake calliper bolt holes?
For my left crank would I be doing the same thing but turning counter clockwise to set new threads in the crank arm? Thanks, nice video!
Hi I love your video and I will work on my right hand pendal which have wear out and I would be using your video to fixed. My bike is Carera Crosscity ebike Folding bike. I will send you a feed back too.
life saver
Can I use this method on an exercise bike?
where can I purchase a pedal re tread kit and the cost pls thanks
Excellent video! Thank you!
Stripped pedals all because the #1 bike shop rule isn't followed:
"All the way on or all the way off!"
Never "just snug it down and come back to it later" in bike repair. Doing this may kill you, someone you love or a customer. Your pedal may fall off, your stem may twist, your front wheel may fall off! This has happened and will happen time and time again when this rule is disregarded or forgotten. This is what employs lawyers and ruins lives.
Three rules to follow when working on bikes (and stuff in general) and you'll go far (figuratively and literally!):
1) All the way on or all the way off!
2) Grease metal-metal contact. (Yes, there are exceptions. But they are few.)
3) Test ride all your work.
Thank you Dude!
How long it will hold the bushing?
When you get to the thread making you should move forward a couple turns and then reverse the same. this removes the cuttings that can compromise the new thread.
exactley!! but around every turn, what i was taught. better to be proactive
thanks i will apply this also to my mtb. same isue 😐 i hope i can fix also
Awesome. Good luck.
That's very handy now I don't have to buy a new crank arm all together
Curious if basically same technique would work on front wheel "plug and play" threads that are stripped? Brand new bike. LBS installed front fender. I removed fender to check on a front end noise and when went to reinstall and screw I tried several) won't line up with the hole. Is it just a matter of re-threading? TIA!
Ya, same concept. I have to try it today on a disc brake post thread. The guy crashed and sheared the bolt off stripping the threads in the process.
Where can i get the tools from to dl this guys
Realky Thanks , it saved my bike, and just for only 50€ ( 40€ for the tap and 10€ for the insert )
Cool!!
The crank is removable - you don't need to throw away the bike if there is a problem with it. In fact, you could've bought a new crank for less than you paid to re-thread the old one and then you wouldn't need worry about the insert coming loose in a few months.
djsjjd15 yess i know but mtb cranks are expensive and i doesn’t want to pay about 200 bucks bc i have some race face turbine crankset so i have just rethreaded it and after 1 month of utilisation this is perfect
What size is the thread insert?
Thanks for the video, how do you cut the extra thread, mine keep hitting the chain.
Ouch. I have been leaving them in with no rub. You could hacksaw them off. But may not be the best way. In hindsight, trimming them before hand would be best.
It looks like Unior has discontinued the kit, but added a new kit to their site with a tap handle for $300. Kinda rough for just fixing a crank set arm!
The taps and tap handle are easy enough to source elsewhere, but the thread inserts are a bit harder to find. How can Unior be the only ones that make them at 9/16" 20TPI?
I keep stripping the pedal on the left side of my bike thank you for the information
Your welcome. 👍🏽
Question: If I am repairing the left pedal instead (vs. the right in the video), does the coil and threading tool go in clockwise also? (I understand for the left side, the pedal tightens counter clockwise). Thank you.
What kind of grease do you recommend for the pedal ends (assume new pedal and new crank arm)? thanks
Any multi purpose grease is fine. A thick consistency like Park Tool helps protect against water, contaminates and creaking.
Hi, Nice video. Very clear. I wanted to ask you if you think I machine a bushing with 1/2 20 TPI threads inside and )/16 outside soI can fit a set of 1/2 pedals into 9/16 crank without adding extra length as it’d happen ifI but the adapters available in the market.
I have not heard of that procedure or parts for that.
Size of tap for heli-coil ？
I bought an ebike. I was able to smoothly install the left pedal but the right pedal got super hard and it wouldnt go in all the but like 3/4 of the way.
I find that any existing thread from back side of the arm is a good quote for the thread cleaner/cutting tool
Yu mean coming in from the other side? That can work too.
Fantastic video, thank you sir !
I actually have a problem with a new bike, new pedal where the right pedal won't screw on the right side. Any tips?
The first thread of the crank most likely is fat. Use a pointy scratch all to clean the threads. And or install the pedal from the rear and hopefully it reaches the damaged thread to. This will help to clean up th threads.
Hi thanks for the video. Unfortunately the tool is no longer on the UK version of amazon and the company that makes it hasn’t gotten back to me. So I had to order separate parts from a German bike company, hopefully it works. Cheers.
Bummer. I hope it works out. I had gotten mine from my distributor.
Thanks but my fatbike too broke my bike pedal treads broke what type of treads i need ?
The most common pedal thread size is 9/16". The tread pitch is standard. One size should fit all. Choose left or right side insert and tool. The one tool will clean out the crank hole and prepare the thread all in one procedure. Don't for a t handle to insert maneuver the tool.
Hi, What if majority of my threads are ok? I had screwed up and now my i cant seem to get it past the first few
Use a tap, the tip is tapered allowing it to pass the damaged area. Or enter from the other side.
Question: If I am repairing the left pedal instead (vs. the right in the video), does the coil and threading tool go in clockwise also? (I understand for the left side, the pedal tightens counter clockwise). Thank you.
Yes, you are correct. The left side will be clockwise. Thanks, Arthur
Can i know what's the thing that you put inside of hole of pedal?
northwestbicycle.com/products/unior-repair-tap-bushing-kit-kit-including-both-taps-and-6ea-replacement-threads-j610020?Google%20Shopping&gclid=EAIaIQobChMI1p_uguOO6AIVkobACh1TPgczEAQYBiABEgJmnvD_BwE
What should I do if the threads are somehow bad, they keep the pedal but the pedal axle is not completely horizontal, it stays a bit bent.
Ooof! Not good, it will fail soon if you continue to use it. Remove the pedal and get the threads repaired or maybe a new crankset is cheaper.
Hi there great video, could you please tell me the exact kit and tools/items i need to carry this repair out ?
Thanks in advance
Hi.
www.ebay.com/p/2255478184
The grey grease is likely a molybdenum disulphide (moly) based grease. They are very slick and grey colour like what you found.
I see some anti seize like this as well.
Would this work on a stationary bike as well? I'm concerned about getting the right size if I buy from Unior
It should work, can you measure the pedal spindle diameter?
@@BikeTeacher yes, it looks like 5/8 but the threads on the spindle are stripped
What the size of thread replacement, and the size of tapping tools?
those are not standard tools or threads..
There are only two main pedal thread sizes, 1/2" and 9/16". They sell kits for each.
Maybe a silly question but I have just bought the same parts for my left pedal. Do I need to screw the tap in anti clockwise? I'm a little confused and don't want to do it wrong way and wear it away
Your right, while standing on the left side of the bike (if seated) turn the tool anti clockwise.
Are all bikes the same size threads I have 26" beach cruiser
If it’s newer than 1980 good chance it’s the standard of 9/16”.
So when you do the other side you would use a different tool and go anti... sorry, from England! counter clockwise when making the new thread? Good video, good teacher.👍
Thanks James, yes there is a left side and a ride side specific cutting tool.If you are standing on the left side of the bike, yes you would turn counter clockwise to clean and thread the left (non drive side) crank arm.
You'll find this alot easier if you take the crank arm off first, then hold it in a padded vice. Then using a long handle ratchet set, and cutting fluid.
Yes, that can work to.
Thank for video. I'm having trouble locating a kit on line. Or did you buy the parts all separately?
Online,I don't see the whole kit now. But here is this,www.amazon.com/20-Right-Left-Hand-Thread/dp/B075N48H1S/ref=sr_1_1?dchild=1&keywords=pedal+repair+thread+insert+kit&qid=1606694229&sr=8-1
I've got a Pedal Crank Thread Repair Bush Bushing Insert 9/16-20 and size tap thread do I need for my Crank for it to fit in
Not sure at the moment. I found this. As long as it is for 9/16” pedal thread. Which is the most common. www.tradeinn.com/bikeinn/en/unior-right-pedal-reamer-and-tap/137499934/p?id_producte=10445431&country=us&gclid=CjwKCAjw5NqVBhAjEiwAeCa97d_jJnHtHBL7Ge8xodsLnVNq2wZyuFwY_DvGfOUA7rcb9pKO0MP1FRoC9M8QAvD_BwE&gclsrc=aw.ds
www.cyclesport.com/product/unior-pedal-thread-insert-single-right-9-16-403112-1.htm?gclid=CjwKCAjw5NqVBhAjEiwAeCa97dYxgGASXVKPo1ndhKhZX2IZuvL2FZltz5hBYxNT_SpLVegK1x13-xoCr8oQAvD_BwE
Will a new pedal be needed to fit the fixed hole?
No, the tap will oversize the hole and the inset will bring it back to the pedal size.
I have a 9/16” interior diameter 5/8” outer diameter 20-tpi thread insert. What exact pedal tap should I get as in size and tpi? Please help because 9/16” as described in the video description for pedal tap was too small!
The tool will be a 5/8”. The otter diameter of the tool threading area and od of the insert is 5/8”.
@@BikeTeacher Thank you! So actually more specifically, the inner diameter is 9/16'' AND 20-tpi whereas the outer diameter is 5/8'' and 24-tpi. I only found a RIGHT hand pedal tap that's 5/8'' 24-tpi, whereas it's for my LEFT pedal threads. Is 5/8 24-tpi okay? Do you think it would work if I used the RIGHT hand pedal tap to rethread for my left pedal but go outward from the bike rather than go in as you do (since it's RIGHT hand)? Or would that not work? Thank you!
hi, what size is the tapping rod?
I m not sure. It says 1695. The bushings are 5/8" (thread inserts)
My guy listening to candy paint😎😎respect
size of that helicoil
Anyone have a link to where I can buy myself one these repair kits?
uniorusa.com/product-category/general-shop-tools/files-reamers-and-taps/ - you have to buy items separately (tapping tool, bushings, t-handle, etc.) - also out-of-stock on some, they have a waitlist i'm already on!
Thanks for posting! I recently damaged my brand new XTR 9120 L crank and stripped most of the threads. I use it on my enduro MTB. Ive had bike shops tell me the crank is finished and don't use a bushing, but this looks very solid. Do you think there are any safety issues with this? I'm definitely tempted to give it a try considering how much $$ these cranks were.
It is probably not a great idea with hollow crank arms, which that one probably is. Most bicycle cranks are not hollow though.
@@curtiswthomas bike shop put helicoil in and has been rock solid.
@@LDubsChannel thank you! I was watching this because I also stripped my left crank on my Shimano 105 cranks. Good to know that it’s been rock solid for mtb.
@@LDubsChannel how is it holding? I want to know if this is a good idea for enduro riding
I think I can fix my left stripped crank arm myself; however, I would prefer a professional. Now I know what repair to ask for.
What is the size if the helicoil thanks
Hi, 5/8"
I’m having some trouble finding the coil thread kit. Do you have a part no. Or like for those? Thanks for the great videos!
Thanks I found them in the kit
Would this work to fix stripped threading on an ebike where you attach the crank? Right now it goes in a bit crooked and falls out pretty quickly. Tried quickweld but didn't stay, gunna try green loctite if I can't do this.
Like a crank bolt attachment? There are tools to clean up or do minor corrections on either threads. You would need the appropriate tools like a tap and die set. May be easier to replace them.
@@BikeTeacher Thanks for the fast reply! Alright thanks for the advise. Can't find any parts online still brand new, but I'll try and bring it to a shop or something and ask them to do that for me. 👍👍
Thanks
Hi so do u need the helicoil, cause i cant seem to find them anywhere...
Yes you do. Have you tried Amazon? Or everything may be out. Sorry
@@BikeTeacher i tries amazon and other places and even in shops no one has em
Very helpful! I didn't know what to do! I was getting My 10 minutes in on my Exerpeutic Recumbent Bike. I knew that Left Pedal was wobbly, tried to tighten it up to no avail. Anyway, the pedal fell off... I'm going to get supplies I need. Amazon was out of kits and didn't know when they'd have them. I feel knowledgeable thanks to your informative video & links. Just have to find the tools. Hardware Store, here I come! Thank You Very Much...
How about installing helicoil on Shimano crank arm pinch bolts? I find myseld in a situation now that I've stripped those pinch bolt areas as I kept on removing and reinstalling for a deep clean.
The threads in the crank arm are damaged? Or the bolts that use the 5mm tool are stripped. I can see repairing the crank arm pinch bolt threads. They give you good access. Finding the appropriate size will require some research.
@@BikeTeacherthreads on the crank arm are the ones stripped.
So will this work for my exercise bike?
Yes it should.
Would you recommend using JB WELD instead of threadlock
I don't think so, but if you absolutely had no choice I suppose it would work just the same.
is the loctite 277 good??
As long as it is high strength it should be fine.
Do bike repair shops do this kind of repairs? I live near a bike shop but they're closed right now. Thanks.
Some do. Sorry for late response.
What If the first 1-2mm of thread is damaged on the pedal? Can it be reused?
Yes, you would only need the appropriate “tap” to clean it up.
Great video. Have a 15 year old that needs to repair his Schwinn Discover Hybrid Bike 21-Speed, 28-Inch Wheels, any recommendations on what parts we need to order?
Did you get the tools? The Only company I can find is Unior, strange. I believe they are on Amazon. Double check pedal diameter size. The most common pedal size is 9/16".
@@BikeTeacher yes, we purchased all items, but had the wrong size with the coil.
Hi, I need some advice. My bike's right pedal crank arm's thread stripped.. pedal thread size is 9/16, 20 TPI. What's the size of Thread Tap I should use for the crank arm thread? I tried with 9/16, but the thread insert (9/16 20 TPI) is not going in... Should I use 5/8 20 TPI for crank arm thread? Thanks in advance..
So you tried the 9/16 tap? Was this the pedal tap tool or the reaming pedal tap tool?The 9/16 reaming/tap tool work a with the 9/16” inserts. Did the reaming process go well? The reaming tool is left and right specific as well.
Hi, I have responded to your question last week, but I don't see them now... Yes I used the right side products.. Here is the links of those products. I was able to make thread... it appears the thread insert does not fit into the hole at all...
www.amazon.com/dp/B075N48H1S?psc=1&ref=ppx_yo2ov_dt_b_product_details
www.ebay.com/itm/154504186289 - This product page does not show the right side thread insert now, I bought the right side one.
Great vid! Rather than turn a socket inside out, I would have grabbed a 12 point socket.. I'd think that would work and be more snug?!
Yes I agree, I would have tried if I had it.
Do you have videos about installing a crank arm?
I do, here is one. You find more there. ruclips.net/video/0quAcW0oO-Y/видео.html
Just came across this video notice it said
San José 👍🏽 I’m from here..
So just bought a bike pretty much new. The bas is both pedal and crank tread are both gone so you said if pedal tread is gone toss it 😆 so now does that mean I need to buy new right side pedal and also the kit to fix tread on crank? Can I just weld the pedal on?
I am not sure about the welding. Pedals usually survive due to the harder metal. The crank arms may me replaceable depending on the style. If the crank arm has enough material to work with it can be repaired. I provide the service if needed. You can text me pictures if you want. Thanks, Arthur
@@BikeTeacher thanks bike teacher for reaching back..
I took it to a bike shop and they where able to rethread the crank shaft for $15 problem solved 👍🏽
Size of the heli coil sir and the tap?
5/8"x24. 1695.1 2 in one tap.
So the thread kit is 9/16 and bushing or helicoil is 5/8?!