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Re: Dura Ace 7900 STI makeover

Posted: Thu Nov 19, 2015 5:04 am
by FastDad
Thanks for the advices Pitbull.

There is still some progress and changes going on.
Finaly I cut off the peak of the body and I did change the idea for the up shifting lever

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Now I have influence to the shifting power ;)
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Re: Dura Ace 7900 STI makeover

Posted: Thu Nov 19, 2015 5:04 am
by Weenie

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Re: Dura Ace 7900 STI makeover

Posted: Sun Nov 22, 2015 5:59 pm
by FastDad
Over the weekend I made some progress on this projekt...but I'm not 100% happy with these...but it was the first try to visualize my thoughts.
not sure, when I'm able to test the brake lever

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Re: Dura Ace 7900 STI makeover

Posted: Sun Nov 22, 2015 10:35 pm
by xena
wow

Re: Dura Ace 7900 STI makeover

Posted: Mon Nov 23, 2015 2:20 am
by 5DII
How can these things retail for >$500?

Re: Dura Ace 7900 STI makeover

Posted: Mon Nov 23, 2015 4:47 am
by FastDad
5DII wrote:How can these things retail for >$500?


I don't get what you try to say :noidea:

Re: Dura Ace 7900 STI makeover

Posted: Mon Nov 23, 2015 6:11 am
by kevosinn
Wow so amazing....do you still need a front shifter? I may be able to get you one.

Re: Dura Ace 7900 STI makeover

Posted: Mon Nov 23, 2015 6:54 am
by 5DII
FastDad wrote:
5DII wrote:How can these things retail for >$500?


I don't get what you try to say :noidea:


I meant new dura ace shifters, they seem relatively simple on the inside to cost so much at retail.

Re: Dura Ace 7900 STI makeover

Posted: Mon Nov 23, 2015 6:59 am
by FastDad
kevosinn wrote:Wow so amazing....do you still need a front shifter? I may be able to get you one.


YES, I'm still in need for a front shifter...This would be great!!!

Re: Dura Ace 7900 STI makeover

Posted: Mon Nov 23, 2015 7:07 am
by FastDad
5DII wrote:I meant new dura ace shifters, they seem relatively simple on the inside to cost so much at retail.


My guess..."exotic" materials and you can rebuild it. Compared to the lower quality groops, the Dura Ace has much less press fit bolts and a high number of screwings

Re: Dura Ace 7900 STI makeover

Posted: Mon Nov 23, 2015 1:40 pm
by maxxevv
5DII wrote:
FastDad wrote:
5DII wrote:How can these things retail for >$500?


I don't get what you try to say :noidea:


I meant new dura ace shifters, they seem relatively simple on the inside to cost so much at retail.


Try getting a CNC machine shop to fabricate all the individual parts to the same exacting tolerances and surface treatment quality.

You'll be even more shocked how much it costs .... :roll:

Re: Dura Ace 7900 STI makeover

Posted: Wed Nov 25, 2015 12:07 am
by mavic1010
wow.....

Re: Dura Ace 7900 STI makeover

Posted: Thu Nov 26, 2015 1:18 am
by mythical
Pretty daring project this, FastDad! What's your target weight or how much do you think you can save?

Re: Dura Ace 7900 STI makeover

Posted: Thu Nov 26, 2015 5:00 am
by FastDad
I don't think this project is daring at all...at least less daring than a home made saddle seatpost combo and a bar stem combo :wink:

I guess this one STI will weight in the 90s at the end, including the hood... maybe sub 90g

Re: Dura Ace 7900 STI makeover

Posted: Mon Nov 30, 2015 5:17 pm
by Lightweenie
Any news on the project?

I was wondering, does it make sense/do you plan to, remove the return spring from the brake-lever, since theoretically the springs in the brake-bodies should suffice to pull the lever back, or not?

Re: Dura Ace 7900 STI makeover

Posted: Sat Sep 09, 2017 4:10 pm
by Arfer01
please update! want to see moooore

Re: Dura Ace 7900 STI makeover

Posted: Sat Sep 09, 2017 4:10 pm
by Weenie

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