Carbon seat + post : Remove bracket/rails and attach seat directly to post - bonding?

Discuss light weight issues concerning road bikes & parts.
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alcatraz
Posts: 588
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Hey

Has anyone modified their seat+post and attached them together?

I have a cheap carbon seat and post that I'd like to try this on as a winter project.

Now it seems to me that the contact surface will be quite small. How to ensure the seat and post remains attached? What kind of preparation and glues/chemicals are required for this?

Obviously dremeling the rails away and the top of the post to fit nicely together is the first step. The second? :D

Even if it's too much to write, a little is better than nothing. Appreciate it! Then just piece it together, no problem.

/a

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corky
Posts: 1151
Joined: Thu Jul 06, 2006 5:53 pm
Location: Expat in Washington DC

by corky

It will make the saddle so rigid as to be pretty uncomfortable.......

by Weenie


alcatraz
Posts: 588
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

I thought it could do the opposite since the wings where the sit bones are will have a longer lever and flex some more. My carbon seat already has no flex in the middle.

/a

alcatraz
Posts: 588
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

I hope I'm not breaking a rule by bumping this. Anyone?

/a

antonioiglesius
Posts: 230
Joined: Sat Oct 15, 2016 9:08 pm

by antonioiglesius

I'm thinking about Berk's seatpost combo:

Image

It looks like there's a fin in front and behind the seatpost itself, which helps hold the saddle in place. Carbon fiber's definitely needed to make this fin. I'm guessing the fin opens up underneath the saddle (like a 'T') with the top part supporting the saddle. It should help to be able to vacuum bag the whole thing.

It might also be possible to bond the rails directly to the post itself:

Image

KarlC
Posts: 665
Joined: Fri Dec 05, 2014 2:08 am
Location: San Diego Ca USA

by KarlC

corky wrote:It will make the saddle so rigid as to be pretty uncomfortable.......


I did it and found this to be very true.

I really like the look but the ride sucked

by Weenie


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