New bottom bracket advice

delorean_dude

So I have an old (but immaculate) 2012 Boardman comp HT which i was riding up until a year or 2 ago. I want to start riding again and on checking the bike over and sorting the brakes etc all is fine. I had previously upgraded brakes, shifters and mech.

When i got the bike it had the dreaded FSA bottom bracket and Halfords bike team issues. The bottom bracket isnt crunching yet but does flex a fair amount (notice it more now than i used too). I would really appreciate advice on what to replace it with. I dont want to spend loads on a new bike so can i replace the bottom bracket and crank? maybe for a 2x?

I have x9 shifters and rear mech and an x5 front mech so wondered if i could use this with limit screws as a 2x?

Either way any direction on what to get (not too expensive) would be appreciated. I know some of the older kit has good discounts on CRC etc, if only i knew what i needed. I guess as a minimum a new better bottom bracket and crank set.

thanks in advance...

mrfpb

There is another thread on this topic. I'll repeat what I said there. I swapped out the terrible FSA crankset on my Boardman ADV for a 2x Sora and picked up this relatively cheap Shimano BB (£10):

https://www.sjscycles.co.uk/bottom-brackets/shimano-deore-outboard-bearing-bottom-bracket-english-thread-bb51b/

delorean_dude

Thanks for the info... that looks ideal... is it an easy fit / straight replacement?

would it work with this crank? and would i be able to get my deraileur to limit for the 2 gears?
https://www.bikeinn.com/bike/shimano-sora-fc-r3000-9s/136145502/p?utm_source=google_products&utm_medium=merchant&id_producte=3581722&country=uk&gclid=Cj0KCQjws_r0BRCwARIsAMxfDRjoaOfPDk1OWLj2-87lkY4cbrcwjuetT7uhcrcx9OWTFx3q0GyVGsIaAmqWEALw_wcB&gclsrc=aw.ds

thanks

mrfpb

Yes to the first, it's what I did.

Going from a triple to a double, using the limit screws should be fine. You'll still have the option of using a triple in the future if you want to.

But the two bottom brackets are likely to need different installation tools.

Oldfashioned Square taper/Octolink cartridge BB: https://www.sjscycles.co.uk/tools/park-tool-bbt22-bottom-bracket-tool-shimanoisis-20t-splines/

New Shimano Hollowtech II BB: https://www.sjscycles.co.uk/tools/park-tool-bbt9-bottom-bracket-tool-shimano-hollowtech-ii/
(That one includes the crank nut tool)

mrfpb

Need to add: You didn't say the gear size on the FSA chainset. If it's less than 50 on the biggest ring, then you'll need to move the front mech higher on the seat tube to accommodate the new chainset.

delorean_dude

ok thanks... sounds like a good way to go if i can change back if needs be.. just realised the crank i posted is a road crank and i'm MTB. sure i can find similar MTB. Tripple seems a little old hat now and i really dont use the 3 rings...

thanks for the mech info...