Technical & Reference Section > Tech and Restoration

Fitting my first 3pc in a US BB *UPDATED*

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motomagII:
sounds like you need top hat washer on the chainring so it sits tight on the cranks axle ?

TwoBobRob:
Whip the chain off and give the cranks a bloody hard spin then stand back and have a look at your chainring; is it running true, or all over the shop? It should be pretty bang on.

Secondly, give each link on the chain a wobble, see if you have any tight spots. It needs to have a nice consistent feel to it.

That'll do for now, see how you get on  :)
 

Bettyswallocks:
WHS^^^^

Take the chain off spin the cranks and check the sprockets straight or has any up and down movement, that would cause a tight spot

ED209:
cheers gents - it was fine when the one piece was in so thats why I asked.

Will go have a look.

( Steve ... I bow to your Photoshop skills  :-X )  ;D

Munnyella:
Ed,

Your brake blocks, have they got removeable spacers? if so, make sure they have the small one between the caliper and the block, it will move your brake in a smidge, hence, needing less spacing on the drive side, I have never had the need to have more than 1 thick spacer and the top hat washer that side, usually, 1 mid thickness spacer and the TH.

I'm `out and about' on Friday, not a million miles from Melton, let me know if a cheeky `assist' could be beneficial.

Mark

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