Replace left crank or whole crankset…?
Got an SLX hollowtech II double and bash crankset and the left hand crank arm came off on a ride today. Had a look inside and the aluminium grooves inside the left crank are shot. However, the splines on the axle look pretty much fine. It’s about 2.5 years old.
Question is, should I replace the left crank arm for £50 or just get a new crankset for £95?
Anyone got any experience of going for the cheaper option? I’d rather not spend £50 to just be back to square one I suppose but cash is tight at the mo…
Advice appreciated…Posted 4 years agoandylMember
Put the old rings on a new Deore or SLX crankset (the new Deore looks pretty good and is a bargain). Either keep the drive side as a spare or stick it on ebay (what I would do as there is bound to be someone who wants one).
then when the drivetrain is shot dig out your nice new rings.Posted 4 years agoB.A.NanaMember
Yes, I’ve had exactly the same happen a few years ago, crank arm came off whilst I was hacking up a steep hill out of the saddle, knackered the splines , the axle tube splines will be fine tho especially if they look it(as you say) it’s a harder metal. I bought a new crank arms and it has been fine ever since.Posted 4 years agoMTB-IdleMember
go down to your LBS or even local chain and ask them nicely if they have any left hand cranks in the spares bin.
They will quite often have these as leftovers from where people have replaced cranksets on off the shelf bikes or where they have simply lost the other part.
They will usually give you a good price too.Posted 4 years ago
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