FSA Mega Exo BB-7000

tboy823

Hi

I have one of the above BB's on my Boardman Team FS.

I stripped it down to give it a good clean the other day and the non drive side bearing is shot.

I've repacked it with grease and it's OK for now, but long term, should I

Buy an exact replacement part? (CRC £29.99)
Just buy a new set of bearings - they are 24377-2RS01, where's they best place to source these please??
Change to something different/better - if so, what should i be looking for as a replacement??

thanks

UncleMonty

These BB's don't seem to last two minuets with me, I stripped mine down like you, de-greased then re-greased, did this multiple times and got another years usage out of it before one side totally seized.

I then bought a Deore BB, and using a socket set of the same size I tapped the bearings out from the threaded side, then pressed these into my fsa cups, worked fine, but the seals don't fit as snug and only lasted 6 months.

A month ago I bought another Deore BB but this time I just fitted the whole BB, it fits my FSA 2009 Moto chaninset but it did move the chain line slightly so I had to adjust my gears.

Deore BB's are £13 v the FSA @ £30, a total rip off IMO

chrisinleedsuk

So how's the FSA/Deore combo going?

The reason I ask is that my 'dale Synapse has an FSA Omega Chainset and MegaExo BB and whilst I've eeked just over a year out of the BB it started to get noisey after about 2 months and has been stripped and greased about three times to keep it quiet. I like the cranks and the rings are still ok but the price of FSA BBs is a real discouragement from keeping them.

chrisinleedsuk

Also, I just searched the SKF bearing catalogue and (just in case anyone was considering an overhaul) it isn't a standard bearing. 61805 (25x37x7mm) bearings are closest (71805 for angular contact precision bearing) and are available in a variety of sealing options but have a 25mm bore so no good without sleeving which is just hassle.

UncleMonty

Yeah so far so good & still nice & smooth, I have read that they don't fit all FSA chainsets though, I think it's the axle size, mine just fits with the help of a rubber mallet.

If you do go for it this is a cracking buy
http://www.rosebikes.co.uk/article/shim ... aid:274227

chrisinleedsuk

Tell me about it, mines a 19mm axle so its a no go. How can one standard have two completely different axle diameters?

Dingleberry

Bit of a thread resurrection!

Have stripped down my FS Team for a good clean after winter too, and it appears the non drive side bearing has seized solid...

After a bit of Googling, I'm still completely confused about BBs! Seen a few things saying the FSA cranks might not fit a non-FSA BB... so could someone point me to a replacement BB so I don't have to spend £40 on another FSA (it's already been replaced once under warranty...). Would the Shimano from Rose Bikes be ok? Any others?

mrmonkfinger

After a bit of Googling, I'm still completely confused about BBs! Seen a few things saying the FSA cranks might not fit a non-FSA BB... so could someone point me to a replacement BB so I don't have to spend £40 on another FSA (it's already been replaced once under warranty...). Would the Shimano from Rose Bikes be ok? Any others?

Any 24mm BB should work. Shimano would be ok. Hope make a fancy one. Note, the FSA BB uses two conical plastic washers, only for spacing/preload. Don't transfer those to the Shimano (or whatever) BB.

Personally I'd try Katec on ebay, they seem to stock most bike bearings http://stores.ebay.co.uk/KaTec-Bikes

Dingleberry

Don't really want to mess around banging bearings in and out, so looks like Shimano XTR's the one to go for. then Thanks!

Dingleberry

In case anyone was wondering: The Shimano BB arrived today, and I managed to get the FSA cranks installed after a few good smacks with a block of wood and a hammer...