Bontrager seatpost rotary clamp/ears (+SLR carbon rails)

Discuss light weight issues concerning road bikes & parts.
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sanrensho
Posts: 410
Joined: Tue Aug 02, 2011 5:54 pm

by sanrensho

Does anybody happen to know the weight of the rotary clamp hardware (ears + bolt + rotary clamp) for Bontrager seatposts?

Also, Bontrager lists two optional ears for carbon oval rails: 7x9mm and 7x10mm. Is the 7x9mm a better choice for Selle Italia SLR carbon rails (7x9.6mm)?

Thank you.

by Weenie


FIJIGabe
Posts: 1384
Joined: Tue Sep 11, 2012 6:07 pm
Location: The Lone Star State

by FIJIGabe

If I remember correctly from my build, it's 12g.

For your saddle, I'd go 7x10.
Madone 9 https://goo.gl/7UwZpV
Crockett https://goo.gl/f5PdCN
Madone 5 https://goo.gl/cMdyFo

Madone 4, Cobia. I own a lot of Treks.

sanrensho
Posts: 410
Joined: Tue Aug 02, 2011 5:54 pm

by sanrensho

^^^Thanks FIJIGabe. Is that weight for the ears only? Because I think all the loose parts weigh a bit more (ears, bolt, spring, rotary clamps).

FIJIGabe
Posts: 1384
Joined: Tue Sep 11, 2012 6:07 pm
Location: The Lone Star State

by FIJIGabe

Sorry, I was really off. The weight of the ears is 29g for the 7x10 versus 21g for the standard 7x7 version.

Image


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Madone 9 https://goo.gl/7UwZpV
Crockett https://goo.gl/f5PdCN
Madone 5 https://goo.gl/cMdyFo

Madone 4, Cobia. I own a lot of Treks.

sanrensho
Posts: 410
Joined: Tue Aug 02, 2011 5:54 pm

by sanrensho

Thanks! I wish someone would make a lightweight version of the rotary clamp hardware.

erwizy4p5
Posts: 34
Joined: Tue Nov 20, 2012 7:50 pm

by erwizy4p5

I wish someone would too

by Weenie


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