Side play with FSA MegaExo crank?

[oliver1850]

I've never installed one. Friend is saying his carbon FSA crank is moving slightly side to side. Anyone had this problem and fixed it?

[cmbicycles]

Is the crank bolt torqued correctly? I loosely recall some of their cranks using a small spacer on the spindle, so perhaps that is missing. If the BB is worn out of course that could cause issues as well. There are spindle shims/spacers out there as well to take up play.

[R3awak3n]

is this an all of a sudden thing?

Did he put the wave washer in? (not sure the megaexo has it but my FSA crankset sure does.

[rustychisel]

First iterations had an alloy retaining bolt for NDS crank, it's rubbish and should be replaced. The actual BB spindle came with a wavy washer which was installed on NDS between crank and external cup seals. If it's not there you may get in the order of 1 ~ 1.5mm slop.

[oliver1850]

Friend bought the bike new, but he noticed the problem recently. Bike is 6-8 years old.

I'm guessing that the spring washer that rustychisel mentioned went missing from the original build. Thanks for making me aware of it.

Now where to get one?

[R3awak3n]

https://www.treefortbikes.com/FSA-Me...8aAgf7EALw_wcB

But you could ask here, I bet someone has one and will throw it in an envelope for you. LBS might too. There are a lot of cranks that use a wave washer so they might have some around

[jfranci3]

Yeah... 1) Wave spring/washer between bike and crankarm. 2) tighten the bolts in the correct order - big cap bolt then pinching bolt.