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What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 2:25 pm
by Gutsyfungus
I am buying a new frame (chinese Open Mould FM088)...
probably going to put either a Chorus or Record Groupset onto it.

My Bottom Bracket options from the frame manufacturer are...

BSA
BB30
PF30
BB86

The whole topic of which BB standard to choose is causing my some grief...
Anyone care to offer some advice.. (or point me in the direction of a suitable reference discussing the same)

Thanking you all in advance

Gutsy.

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 3:15 pm
by Lelandjt
PF30 for lightweight. BSA if you're not confident in their tolerances or generally suspicious of pressfit.

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 3:15 pm
by Weenie

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 3:16 pm
by octave
Lelandjt wrote:PF30 for lightweight. BSA if you're not confident in their tolerances or generally suspicious of pressfit.
this


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Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 4:18 pm
by AJS914
BSA all the way. The ultra torque BSA cups are almost idiot proof. I'd lose weight elsewhere if that is a concern.

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 5:27 pm
by Nejmann
AJS914 wrote:
Wed Jun 19, 2019 4:18 pm
BSA all the way. The ultra torque BSA cups are almost idiot proof. I'd lose weight elsewhere if that is a concern.
+1

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 5:46 pm
by Orlok
BSA

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 6:00 pm
by Gutsyfungus
Weight isn't a huge concern...5 grams iirc...

I'll stick with the BSA guys.
Many thanks for the feedback!

:)

Gutsy

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 6:33 pm
by joeyb1000
BSA

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 7:14 pm
by moyboy
what happens if they want to get a THM Clavicula SE? :)
BB30

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 7:27 pm
by physeter
Another vote for BSA; three bikes and no hassle.

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 9:25 pm
by kdawg
BSA if they can’t do T47.

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 10:02 pm
by ChiZ01
PF30 for maximum crank compatibility

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 11:40 pm
by bm0p700f
Bsa. I would go as far as square taper too. Nowt more reliable than one of these.

Re: What Bottom Bracket Standard?

Posted: Wed Jun 19, 2019 11:40 pm
by Weenie

Re: What Bottom Bracket Standard?

Posted: Thu Jun 20, 2019 12:35 am
by alcatraz
The last three are lighter, fit more cranks and have larger bearings. The first one is reliable.

Bb86 is supposedly the stiffer option.