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Technical & Reference Section => Tech and Restoration => Topic started by: oldskooldayz on January 24, 2011, 07:47 PM

Title: 3 piece crank issue
Post by: oldskooldayz on January 24, 2011, 07:47 PM: Hi peeps little issue here

For some reason when i set up my cranks and chain wheel the chain wheel is off like on a wobble
I'm adding the shims but to no joy it still seems out

Any suggestions please

I've never had thus before
Title: Re: 3 piece crank issue
Post by: brettypeeps on January 24, 2011, 08:04 PM: What cranks and what chainwheel fella. Do you need a nineteen to 22mm adapter?
Title: Re: 3 piece crank issue
Post by: oldskooldayz on January 24, 2011, 08:13 PM: new oldskool redline proline 180mm single pinch and no adaptor needed

im useing a power disc and 44 chainwheels
Title: Re: 3 piece crank issue
Post by: nosepickben on January 24, 2011, 08:30 PM: I had this, used a combination of a shims on axle + drive bolt to get line right. Still not 100% but good enough for action.
Largeflat thin shim on spindle then what i think was a 10mm wheel axle washer as shim between drive bolt + crank arm. gave me spot on chain line + near enough dammit no sprocket wobble on crank arm. Took time tho bro and a lot of washer hunting+ modyfying with crappy file. good luck, you'll get there.
Title: Re: 3 piece crank issue
Post by: oldskooldayz on January 24, 2011, 09:19 PM: Quote from: nosepickben on January 24, 2011, 08:30 PM
I had this, used a combination of a shims on axle + drive bolt to get line right. Still not 100% but good enough for action.
Largeflat thin shim on spindle then what i think was a 10mm wheel axle washer as shim between drive bolt + crank arm. gave me spot on chain line + near enough dammit no sprocket wobble on crank arm. Took time tho bro and a lot of washer hunting+ modyfying with crappy file. good luck, you'll get there.

sounds like this is what i will have to do from your explanation

i might even just put a 1 piece in cause im a lazy fooker :2funny:

no i will give it shot first and when it feels like im about to throw the bike out the window i will put the 1 piece on :D

cheers
Title: Re: 3 piece crank issue
Post by: brummie on January 24, 2011, 09:26 PM: Quote from: oldskooldayz on January 24, 2011, 08:13 PM
new oldskool redline proline 180mm single pinch and no adaptor needed

im useing a power disc and 44 chainwheels

i have a set of these and needed a tophat washer for my powerdisc
Title: Re: 3 piece crank issue
Post by: brettypeeps on January 24, 2011, 09:33 PM: I agree with Brunmie you will normally need a top hat washer. Gets the spacing correct and keeps the power disk central. Axle is 19mm and power disk 22mm. I might have a spare you can have foc

See if the disk rattles about on the axle and let me know if you need it and I will have a look for it :daumenhoch:
Title: Re: 3 piece crank issue
Post by: oldskooldayz on January 24, 2011, 10:21 PM: right silly me yep defo needed that washer that slips in the disc to stop it moving all over the place :-[

ive got it down now to a 3-4 mm wobble so i will play about with the shims till i get it spot on or really close

Big thanks for the offer on the top hat washer foc mate :daumenhoch:

thanks for the advice guys and next time i will check the full contents of the box before installation ::) ;) :daumenhoch:
Title: Re: 3 piece crank issue
Post by: HEYWOOD BMX on January 24, 2011, 10:49 PM: :) I ran a powerdisc with twincgh-pinch Flights and needed a 23.8mm-19mm tophat washer :daumenhoch: