I've got loads of play on the drive side of my crankset and I wondered if anyone has experienced similar. I've dismantled and reassambled several times but after a short ride it becomes loose. The problem is on the drive side only, there is no play at all on the non drive side. this seems weird as I'd expect both sides to loosen since you tighten one side against the other on these new fangled contraptions. My local shop advised me to throw it away and put in a new shimano LX hollotech for £100 fitted. It seems a bit severe since the old ones are just over a year old (just outside warranty). Any ideas?

welcome to my world

does the drive side mount onto a spline on the axle which is part of the non drive side?

And there's play at this join? if it is, it's exactly the same as what's just happened to me with some raceface evolve xc's

This one has the axle pressed on to the drive side so it is one solid piece. You push the axle through the bb and insert the non drive crank arm on the splined axle and fasten it. As you do it up the two sides pull together. I think square tapered could be the way forward. Did you sort yours out in the end?

nah, it's still wobbly in the garage

i'll be going shimano saint next

The bearings are worn. Mine went recently (after 15mo of solid riding) and I replaced the cups today. All fine now.

If you want to go Shimano, why not get XT from Wiggle (£70).

To be honest I've got Truvativ on one bike and Shimano on two (XT & Hone) and they've all lasted pretty well.

Thanks Higgo. Did you replace them yourself and if so did you use the correct tools or can you get away with another method. Also where did you buy new bearings from?

To be honest I just blew my budget by a mile buying the bike secondhand so its got to be a cheap fix. I'm already in the doghouse.

I have Stylo team ones and have had a similar problem. The bolt that holds it all together needs some locktite on it over wise it comes loose. Not saying that's your exact problem but it might not be helping things.

Did them myself with normal HTII tool

any idea what causes this then? is it the wearing of the crank arms?