Specialized Venge BB advice please

Discuss light weight issues concerning road bikes & parts.
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Dougan
Posts: 383
Joined: Fri Dec 23, 2005 9:06 pm
Location: North East England

by Dougan

Sorry if this has already been discussed. I've got the chance of a Specialized Venge with OSBB but it will clean me out financially, I would need to use my standard Sram Red chainset until I got the cash to purchase a specific BB30 one so has anyone used a
http://www.bicyclehero.com/gb/wheels-mf ... -sram.html
with any success.
I believe the Specialized OSBB is narrower than a standard BB30 so shims might also be required.
Any advice with regards to fitting the chainset would be appreciated.

Thanks,

Dougan

5 8 5
Posts: 1353
Joined: Sat Jul 29, 2006 2:36 am
Location: UK

by 5 8 5

Hopefully this helps
Attachments
SPecialized BB Chart.jpg

by Weenie


Briscoelab
Posts: 1728
Joined: Thu Jan 26, 2006 6:01 pm

by Briscoelab

You're golden. You just run the adapter and everything will work fine.

BB30, PF30, GXP, and Shimano cranks are all OK. Campy can be made to work, but it requires some special parts.

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Dougan
Posts: 383
Joined: Fri Dec 23, 2005 9:06 pm
Location: North East England

by Dougan

I found this on wheels manufacturing website........ now I am confused
http://wheelsmfg.com/complete-crankset-bb-adapter-guide" onclick="window.open(this.href);return false;

JNW365
Posts: 1
Joined: Wed Jun 20, 2012 10:10 pm

by JNW365

Maybe I can help with the confusion. The Venge has a 61mm BB shell and uses a PF30 Bottom Bracket, the Wheels Mfg.
part numbers you would need are:

PF3.5-SPC
http://wheelsmfg.com/products/bottom-br ... pacer.html.

PF30-SRAM
http://wheelsmfg.com/products/bottom-br ... ranks.html.

The PF3.5-SPC adds the 7mm to the BB width to get to the standard 68mm. The PF30-SRAM adapters allow you to install a 24/22 GXP crank in the PF30 bearing with an inside dia. of 30mm. They also take up the space occupied by external bearing cups.

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Dougan
Posts: 383
Joined: Fri Dec 23, 2005 9:06 pm
Location: North East England

by Dougan

Many Thanks

Briscoelab
Posts: 1728
Joined: Thu Jan 26, 2006 6:01 pm

by Briscoelab

Actually, if you are using the Specialized cups and bearings all you need is the
BB30-Sram adapter

http://wheelsmfg.com/products/bottom-br ... -sram.html


The Specialized cups and bearings space the bearings to normal BB30 width.

wetpaint
Posts: 82
Joined: Sat Feb 06, 2010 2:55 am
Location: USA

by wetpaint

Briscoelab wrote:Actually, if you are using the Specialized cups and bearings all you need is the
BB30-Sram adapter
.


Nope, I've tried this on my SL3. The BB30 adapters rub on the plastic cups in the frame. The lip on a BB30 bike is smaller and the adapters work just fine on my SL2 with BB30

thisisatest
Shop Owner
Posts: 1980
Joined: Sat Jun 13, 2009 4:02 am
Location: NoVA/DC

by thisisatest

two ways to fix the bb30 adapter rub- get a box cutter and drag it around the edge a couple times. delrin is very machinable. or use the pf30 adapter, which clears the cup a lot. specifically, use the pf30fsa adapter for sram, not the pf30sram adapter for sram, as sram's pf30 cups run their bearings further inboard than standard.
confused yet?

Briscoelab
Posts: 1728
Joined: Thu Jan 26, 2006 6:01 pm

by Briscoelab

I think we should all drive out to Cal and punch whomever decided to not just use a normal PF30 shell on the Tarmac and Venge in the dick. Who's with me?

:mrgreen:

The kicker is, on the MTB side, they did in face go to a standard PF30 carbon shell a couple years back. Go figure.

aeroslave
Posts: 258
Joined: Tue Oct 14, 2008 12:56 am

by aeroslave

Guys mine is the opposite....I am about to buy a specific S-works OSBB crankset...what exact BB30 bottom bracket (part number) do I need to buy? I am running a GXP RED crankset with adapters....
"Light bike? Its still about the engine!".

Briscoelab
Posts: 1728
Joined: Thu Jan 26, 2006 6:01 pm

by Briscoelab

If you are buying the Specialized crankset, it will come with everything that you need. (bearings, spacers, etc)

by Weenie


89daytona
Posts: 215
Joined: Sun Aug 29, 2010 12:07 am

by 89daytona

Everything in the box, and these. Image

Shimano ones should be included, maybe you can trade for SRAM ones, if not buy them.

Made by wheels manufacturing, found in many cataloged, or get it direct from them
@racecarbrian

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