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Project - need an answer

Posted: Mon Jun 24, 2019 9:10 pm
by surfinguru
Hey, I've got this 2007 Tarmac Expert that I want to update for the wife. (She's been on an upright ebike due to some neck issues, but is ready to try some miles on the Tarmac.) I'm trying to do this as inexpensively as possible as this is really an experiment / occational option to the ebike. The current drivetrain is a no-go, so I'm thinking full 105 grouppo to get this bike up to date and get her on 11spd. (50/34 with an 11/32)

My primary question is: what bb does this frame use? I thought Specialized was still doing BSA on these Tarmacs? I've got the wheelset, so I'm thinking as long as I can get the right bb spec'd this shouldn't be too much work or $$.

Thanks!

Re: Project - need an answer

Posted: Mon Jun 24, 2019 10:05 pm
by Squashednuts
Hey @ surfinguru
Good luck with the build and I hope riding the Tarmac is kind to your wife
I used this
https://lmgtfy.com/?iie=1&q=2007+Specia ... express+bb
And got the answer

Re: Project - need an answer

Posted: Mon Jun 24, 2019 10:05 pm
by Weenie

Re: Project - need an answer

Posted: Tue Jun 25, 2019 6:37 pm
by surfinguru
Hey man, no need to be trite about it. Asked a simple question for clarification. The original link I provided did not list the BB info, thus the question.

I'm not looking to get spendy on this endevour so thought I would ask around for a difinitive answer before tracking down a complete R7000 groupset. Thanks for the clarification with the second link, shows an FSA MegaExo. So if I understand correctly, the frame should use a Shimano BBR60 w/70mm spindle?

Re: Project - need an answer

Posted: Thu Jun 27, 2019 4:34 pm
by otoman
Squashednuts wrote:Hey @ surfinguru
Good luck with the build and I hope riding the Tarmac is kind to your wife
I used this
https://lmgtfy.com/?iie=1&q=2007+Specia ... express+bb
And got the answer
OMG thank you Image that is the funniest sh*t I’ve read in quite a while. LOLing at work.... Image

Re: Project - need an answer

Posted: Fri Jun 28, 2019 1:53 pm
by mendiz
@surfinguru, Try the webpage "compatibility guide in Specialized bottom bracket" You can download a table where your Tarmac is.
Besides I advice your wife use 46 instead 50 like big chainring because 46x11 is 3 cms more than 50x12. To lower the front derailleur you need this adapter https://www.dolan-bikes.com/sugino-adju ... mt-ox.html

Re: Project - need an answer

Posted: Fri Jun 28, 2019 1:53 pm
by Weenie

Re: Project - need an answer

Posted: Fri Jun 28, 2019 9:01 pm
by surfinguru
mendiz wrote:
Fri Jun 28, 2019 1:53 pm
@surfinguru, Try the webpage "compatibility guide in Specialized bottom bracket" You can download a table where your Tarmac is.
Besides I advice your wife use 46 instead 50 like big chainring because 46x11 is 3 cms more than 50x12. To lower the front derailleur you need this adapter https://www.dolan-bikes.com/sugino-adju ... mt-ox.html
Hey man, thanks for the helpful link!