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Technical & Reference Section => Tech and Restoration => Topic started by: Peanut on October 07, 2009, 10:20 AM

Title: crank is drivin me nuts
Post by: Peanut on October 07, 2009, 10:20 AM: left hand crank arm keeps coming loose, driving me mental, like riding a bike made of jelly
Title: Re: crank is drivin me nuts
Post by: toys19 on October 07, 2009, 10:22 AM: square taper BB axle with alloy crank arm? if so the taper in the arm is fooked - I dont think there is a repair...
Title: Re: crank is drivin me nuts
Post by: bmxbob on October 07, 2009, 11:19 AM: Quote from: toys19 on October 07, 2009, 10:22 AM
square taper BB axle with alloy crank arm? if so the taper in the arm is fooked - I dont think there is a repair...

used to use a coke can shim bitd :LolLolLolLol:
Title: Re: crank is drivin me nuts
Post by: TwoBobRob on October 07, 2009, 11:23 AM: Give us a bit more info - there's bound to be a cure. Make and model of crank, stick a picture up maybe?
Title: Re: crank is drivin me nuts
Post by: toys19 on October 07, 2009, 11:24 AM: Quote from: bmxbob on October 07, 2009, 11:19 AM
Quote from: toys19 on October 07, 2009, 10:22 AM
square taper BB axle with alloy crank arm? if so the taper in the arm is fooked - I dont think there is a repair...

used to use a coke can shim bitd :LolLolLolLol:

yeah I used this but it never lasted long..
Title: Re: crank is drivin me nuts
Post by: bobafett on October 07, 2009, 11:25 AM: I had trouble with the non drive arm on my rider coming loose - simple addition of a washer sorted it :daumenhoch:
Title: Re: crank is drivin me nuts
Post by: Peanut on October 07, 2009, 12:20 PM: don't know the make, it's a splined axle

(http://www.systemben.com/gt)
Title: Re: crank is drivin me nuts
Post by: pickle on October 07, 2009, 12:22 PM: should be fine??

have you cleaned the threads and then use fresh threadloc? ???

washer?
Title: Re: crank is drivin me nuts
Post by: Peanut on October 07, 2009, 12:27 PM: has no threadlock which might be the problem, anyone know of a cheap homemade threadlock solution?
Title: Re: crank is drivin me nuts
Post by: toys19 on October 07, 2009, 02:39 PM: superglue
Title: Re: crank is drivin me nuts
Post by: thecrooch on October 07, 2009, 03:19 PM: have you stripped it out at all?

mine used to come loose because the sleeve over the spindle (inside the BB) was too long.

probably best to get your LBS to look at it...
Title: Re: crank is drivin me nuts
Post by: MartyC on October 07, 2009, 03:23 PM: Quote from: Peanut on October 07, 2009, 12:27 PM
has no threadlock which might be the problem, anyone know of a cheap homemade threadlock solution?

Plumbers PTFE tape :daumenhoch:
Title: Re: crank is drivin me nuts
Post by: Peanut on October 07, 2009, 04:27 PM: i shall fiddle tonight, thanx chaps
Title: Re: crank is drivin me nuts
Post by: trasher on October 07, 2009, 06:10 PM: Quote from: Peanut on October 07, 2009, 04:27 PM
i shall fiddle tonight, thanx chaps

Enough if your personal life

Back on the subject .get down to halfirds and get some
Locktite threadlock