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Small hairpin clip, where to get?

Old 11-18-17, 03:57 PM
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csport
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Small hairpin clip, where to get?

Hi

Very stupid quesion: I have lost the hairpin safety clip which prevents pad retaining bolt from unscrewing on TRP Spyre. TRP has bolt/clip assembly for >$10 here: https://www.trpcycling.com/product/pad-retaining-pins/ (It has the picture of the pin and the clip.) In addition, Spyre one is out of stock, so one can only buy a HY/RD pin/clip for the sake of the clip. That is a bit expensive

I thought it would be possible to get such generic part elsewhere. I asked at a hardware store and auto shop, they did not have it. The length of the clip is 11mm, inner size at the point which contacts the groove in the bolt is 2mm.

I understand that an alternative solution would be to loctite the threads.

Thanks for any help.
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Old 11-18-17, 04:36 PM
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try a search for a hairpin cotter or R-clip
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Old 11-18-17, 06:44 PM
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Pickup a some piano wire at a hobby shop and make one with needle nose pliers. A R/C hobby shop may have a clip close enough to use.
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Old 11-18-17, 06:58 PM
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Try a motorcycle shop. Many MC's use that type of clip for brake pad retention as well. If the parts counter doesn't stock them go around to the service department.
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Old 11-19-17, 12:13 AM
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csport
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Thanks for all the help!

Originally Posted by bluehills3149 View Post
try a search for a hairpin cotter or R-clip
Very helpful search, grainger.com has some similar clips, they have a shop nearby.

Originally Posted by Slash5 View Post
Pickup a some piano wire at a hobby shop and make one with needle nose pliers. A R/C hobby shop may have a clip close enough to use.
Sorry, is R/C for "remote control"? Not sure about the piano wire, can it be bent so that it keeps its shape under stress? The pin I have does not have a hole but rather groove. I actually thought about getting a piece of some soft wire, wrapping it around the groove and twisting the lose ends together. Not reusable but who cares

Originally Posted by Crankycrank View Post
Try a motorcycle shop. Many MC's use that type of clip for brake pad retention as well. If the parts counter doesn't stock them go around to the service department.
Will ask them.
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Old 11-19-17, 12:38 AM
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You can definitely get them here:
https://www.mcmaster.com/#hairpin-clips/=1abhf5i

Though at that size the minimum quantity is 100!
About $10.
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Old 11-19-17, 01:04 AM
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I have a bunch of radio control car body clips; one of them should work for you. E-mail me your address at rccardr@cox.net and I'll send some to you in an envelope.
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Old 11-19-17, 07:01 AM
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It looks like an E-clip would be a more appropriate retainer for that type of pin. https://www.mcmaster.com/?error_redi...clips/=1abmcy3
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Old 11-19-17, 08:29 AM
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Originally Posted by dsaul View Post
It looks like an E-clip would be a more appropriate retainer for that type of pin. https://www.mcmaster.com/?error_redi...clips/=1abmcy3
Yes, it probably would but would require tools to remove and reinstall. A hairpin cotter can be removed and installed with just your fingers.
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Old 11-19-17, 08:53 AM
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They might have them in the fastener drawers at Lowes.
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Old 11-19-17, 09:47 AM
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It just dawned on me that no one has mentioned just going to a bike shop. There's a good chance they may have some of these in stock. Should also add that as the OP mentioned just some locktite on the threads will be fine. I run these type of retainer bolts w/clips on my motorcycles and have never had one start to back out even without the locktite and that includes racing which puts them through massive stresses.

Last edited by Crankycrank; 11-19-17 at 09:53 AM.
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Old 04-04-19, 08:06 AM
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Found this multi-pack/assortment at Napa Auto, $3.75 (US). I also own the TRP Spyre post-mount mechanical disk brakes. These will fit, but I can't speak to corrosion resistance (yet).

There are two in the package, in addition to some very small r-shaped ones that would work in a pinch (temporarily).

I am new, so I am not allowed to post a link for you yet, by policy. Just go to Napaonline and search for part: NOE 7352657
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Old 04-04-19, 11:53 AM
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Check with an Ace Hardware better selection then home Depot or Lowe's for that type of part.
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Old 04-06-19, 07:22 PM
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old thread but bike shop will have a collection of cotter pins. easy. or hardware store and get a cotter pin
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