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On the GT Fury the lad has a raceface descent crankset, it's got the little red spacer thing on inside of driveside, then 1 black one. That leaves about 1.5mm showing.
However the crank is a tiny bit stiff then all tightened to 50nm. If I add a 2nd black one, it's crazy stuff, so that's the wrong way.
If I remove the black one it's lovely, but a tiny tiny bit of crank wiggle side to side.
Anyone know of a spacer solution?
Mmm interesting idea. It's an 83mm she'll. I'll measure the spacer on cranks in terms of thickness, but according to CRC they're 1mm
Maybe I could just sand/file one down to 0.5-0.8mm.
We're really talking small amounts needed I think.
I was thinking it might be easier to find a thin BB spacer than axle. Could be down to something
like an over aggressive BB facing.
I don't think I would worry about a tiny fraction of play. Not much in the way of side to side loads on a BB. Its not like cup and cone when it means the bearings are loose - its just a tiny amount of endfloat.
Ive run race face bbs like this before with no noticeable issue MY middleburn cranks have a wavy washer - its not really putting any preload on the bears and yo can slide the cransset against the wave washer a tiny amount as the wave washer compresses.
0.5mm option. Checked the raceface one and it's 24mm ID X 1mm thick
So a 0.5mm may well just work. For £4.19 posted I guess we'll find out.
They've been a tiny bit stiff for ages, I get about 3-5 rotations giving the cranks a spin with nothing attached like a chain.
The DH is a bit draggy anyway as it's got a top guide on the high pivot, as well as a lower tensioner E13 LG1+ which causes drag.
I'm being very very picky here though, but may as well for a few quid
I had similar with a set of Raceface Chester cranks. I think there was a thin black spacer right up against the drive side crank that could be removed.
Bah.... the 0.5mm spacer arrived and was fitted (no play in the cranks when fitted)... i get about 3 revolutions of the cranks with it fitted and a reasonable finger push. With the 1mm spacer I get 2 revolutions.... Without the spacer i get 6-8 revolutions, but a tiny bit of play.
So i need something less than 0.5mm....
Just ignore it. I checked mine - its got perceptible play in it and has done thousands of miles All this is is controlling endfloat - a tiny bit is fine IMO
Are these still the same as the X-type cranks or have they moved to a new system?
There should be an X-ring (fancy name for a rubber seal) pressed into the end of each crank, which is soft enough to do the job of the wave washer on most other systems. I did 3D print a set of 24mm spacers a few years ago as I seem to have a magnetic attraction to out of spec cranks. I've a set of M970 that need an extra 2.5mm spacer on the frame or the screw out adjuster come off the threads, and exactly the same on a set of GX DUB cranks, on different frames. Makes life easier when changing BB's if you it all goes together again rather than having to count spacers in/out.
Whats that saying? "Don't let perfect get in the way of good enough"
I’d go with no play and a tiny bit of drag if we’re talking it spinning for a few revolutions with a finger push. Bearings have seals and it’s a DH bike where you’ve got gravity on your side for the most part.
You can't get a set of 0.1, 0.2, 0.3, 1, 2 & 3mm from eBay
https://www.ebay.co.uk/itm/304447377618
Chris king do a 0.33mm spacer
https://www.biketart.com/products/chris-king-bottom-bracket-24mm-spindle-spacer
Whats that saying? “Don’t let perfect get in the way of good enough”
New here?
There is no such thing as good enough. There's correct and there's everything else
LOLz! I know where you are coming from!
got the toothbrush out to clean your bike recently?