Tarmac S-works SL6 BB question

Discuss light weight issues concerning road bikes & parts.
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cassard
Posts: 95
Joined: Wed Jan 24, 2018 12:31 am

by cassard

Hi,

I'm building a new Sagan Superstar SL6 bike and I have a quick question. Our customer would like to change the stock bearings ang BB which is a BB30 to a Praxis Ceramic Threaded BB, so he can install a Shimano Dura-ace Crank.

I know we could do this with the older frameset to prevent the creaking problem, but My head mechanic told me that since it's a new BB shell that Specialized made, you either couldn't do it yet, either you cannot at all. Then Specialized told me that you can and you need to call praxis to be sure to get the good model.

I have with me a Praxis BB that the customer bought, but I want to be sure that it's the right one. From What I see I just need to take out the bearings, snap ring and plastic sleeve inside the frame and install the BB....

So before touching all of this, does anybody have an answer on this ?

by Weenie


CrankAddictsRich
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Joined: Wed Jan 27, 2016 1:39 pm
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by CrankAddictsRich

Here's a link the PDF guide for bottom bracket converters from Praxis....

Assuming your customer provided you with the Praxis OSBB converter... the part numbers are either 68-3002 or 68-5002. Based on the document, you either need the delrin sleeve or you don't.
2016 Pactimo Brand Ambassador
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2015 Specialized S-Works Allez
2015 Specialized Venge Pro
2014 Specialized S-Works Shiv TT

cassard
Posts: 95
Joined: Wed Jan 24, 2018 12:31 am

by cassard

I found my answer ! I was just a bit anxious since the bike is a new 2018 model and I was worried praxis wasn't up to date for this particular model. It was effectively the 68-5001 bottom bracket (same as the 5002 but with ceramic bearings).

Everything has been install perfectly.

Thanks !

CrankAddictsRich
Posts: 1190
Joined: Wed Jan 27, 2016 1:39 pm
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by CrankAddictsRich

cassard wrote:
Thu Apr 19, 2018 4:22 am
I found my answer ! I was just a bit anxious since the bike is a new 2018 model and I was worried praxis wasn't up to date for this particular model. It was effectively the 68-5001 bottom bracket (same as the 5002 but with ceramic bearings).

Everything has been install perfectly.

Thanks !
actually, 5001 and 5002 are exactly the same, they just come with different pieces for the mounting. For your purposes, though, I don't think you need any of those accessory pieces and the bearing parts are the same. Glad it worked.
2016 Pactimo Brand Ambassador
http://www.Crankaddicts.cc
http://www.skratchlabs.com
2015 Specialized S-Works Allez
2015 Specialized Venge Pro
2014 Specialized S-Works Shiv TT

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