Project - need an answer

Questions about bike hire abroad and everything light bike related. No off-topic chat please

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surfinguru
Posts: 36
Joined: Wed Oct 24, 2012 9:16 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!

by Weenie


Squashednuts
Posts: 527
Joined: Tue Apr 25, 2017 11:12 am
Location: Christchurch New Zealand

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
Fuji SL 5.5kg tubs/5.9kg viewtopic.php?f=10&t=157704

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surfinguru
Posts: 36
Joined: Wed Oct 24, 2012 9:16 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?

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otoman
Posts: 506
Joined: Wed Sep 17, 2008 6:25 pm
Location: Nashville

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
Age and treachery shall overcome youth and skill

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mendiz
Posts: 176
Joined: Sat Aug 20, 2005 3:08 am

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
You don´t stop riding when you get old, you get old when you stop riding.

by Weenie


surfinguru
Posts: 36
Joined: Wed Oct 24, 2012 9:16 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!

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