Fitting an FSA Omega MegaExo crankset

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Hacienda71

Mancunian in self imposed exile in leafy Cheshire
I have a splined bb tool Stu which does Shimano and Sram, I suspect it will do an FSA Omega BB. Can you check how many splines/tooth holes are on the BB.
 
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Cyclist33

Cyclist33

Guest
Location
Warrington
cheers fellas... with a bit of luck, LBS Mike will still be in when I finish work and has offered to do it for nowt.

may come back to yous if ithat doesn't work out.

Stu
 

gbb

Squire
Location
Peterborough
Shimano HT2 tool does fit, but mine was tight, bloody tight, I had to virtually hammer it onto the old BB. Shame is ( if mines typical) is marking your old bb is no problem, I wouldn't like to scrape the paint off a new one. But...needs must.

Forgive me if I'm stating the obvious ... Don't over tighten the preload bolt, it'll ruin the new bearings pronto.
 

gbb

Squire
Location
Peterborough
As you assemble the crankset you then fit and 'tighten' the preload bolt ONLY to remove any sideways movement of the crank assembly on the bike. Having tightened the preload bolt JUST enough (and its not tight when its just right..if that makes sense)...clamp the non driveside crank onto the axle with the two opposing allen bolts. Do not overtighten the preload bolt because it puts too much strain on the bearings, shortening their life (quite drastically in some cases).
Its all in the instructions IIRC.
 
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Cyclist33

Cyclist33

Guest
Location
Warrington
yes but i dont know what you mean by preload bolt and no part is thus described in the booklet so which part do you mean?
 

gbb

Squire
Location
Peterborough
Sorry cyclist, on the non drive side crank, a large flanged bolt (14mm threadIIRC) screws into the end of the crank. This is the preload bolt. It's not to tighten the cranks, only to 'preload' them, ie to take out any sideways movement.
 
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