- Lateral Play – Race Face XC Cranks
There should be some spacers on the axle to take up the play.
IIRC theres a 2.5mm rubber/PU/whatever spacer in one (or both?) of the cranks then you add 1mm plastic spacers untill the space is filled and the deformation of the 2.5mm washer is what pre-loads the bearings.Posted 5 years ago
On a 73mm BB you’d need one off the BB spacers. But the 1mm washers are to account for variations in the 73mm, so the number required will vary frame by frame. The easiest way it to assemble it without them and guess how big the gap is by eye. I think my last frame needed 4.Posted 5 years ago
I’ve just whipped my cranks off to service the BB. The BB is now fine however I just can’t seem to ‘nip up’ the cranks on the BB itself and have some lateral play on them at the BB. They’re just not tight enough on the BB but I’m not sure how to tighten them – is it just a soft hammer job or does the crank extractor tool have another function?
Thanks!Posted 5 years ago
That’s not what Race Face fitting instructions say they’re for. It say’s they’re for setting the chainline (69,70 or 71mm ?).
Depends how mnay you need?
Those instructions just show 1 on each side but I was told to add/remove as nececary untill all the space was taken up.
 read the troubleshooting section. It should be 1 each side if the BB is perfect, mine was obviously on the piss as it needed about 4!
I never looked into chainline, can’t see how 1mm makes any differance with 15mm of movement accross 3 rings and ~50mm of freehub! Mine was on SS anyway so used the freehub spacers to get it right.Posted 5 years ago
Well according to the link it’s 2 washers positioned to give you the chainline you need. Freely admit my memory wasn’t up to much on this occasion numbers wise.
In the past I have added extra to make up for an overly faced BB shell.
Should be noted that for 83mm shells more 1mm washers are used. My Shocker has 5.Posted 5 years ago
The topic ‘Lateral Play – Race Face XC Cranks’ is closed to new replies.