Tuned Dura-ace 7900 group.

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Tuned Dura-ace 7900 group.

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kevosinn

Post subject: Tuned Dura-ace 7900 group.

Posted: Tue Aug 28, 2012 7:54 am

Joined: Mon Mar 05, 2012 7:28 am
Posts: 179

Got my rear derailleur down to 155 grams from 167. Should save another 14 with fibre lyte pulleys. also need to replace the main bolt. That might save 3-4 grams im guessing? Let me know what you think!

Last edited by kevosinn on Sat Sep 01, 2012 6:19 am, edited 1 time in total.

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NiFTY

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 12:57 pm

Joined: Sat May 26, 2012 11:26 pm
Posts: 202

A sram red rear derailleur stock is lighter by 13 grams over your tuned model.

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Frankie - B

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 1:50 pm

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Joined: Mon Jun 02, 2003 8:17 am
Posts: 6393
Location: Drenthe, Holland

You could also say: "hey that is some great tuning work!"
Sure, a stock red is lighter, but this is what WEIGHT weenies is about. I'm happy to see somebody who is putting this much effort in tuning.

Sent from my HTC. (where has their sponsorship gone?)

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btompkins0112

Post subject: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 4:08 pm

Joined: Fri Feb 11, 2011 3:04 am
Posts: 1418
Location: Mississippi

+1 on what Frankie said.....I am going to buy a dremel this afternoon and getting to work! Nice job!

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kevosinn

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 5:19 pm

Joined: Mon Mar 05, 2012 7:28 am
Posts: 179

I have about 8 hours of work into this thing haha!

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bikejunkie

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 6:55 pm

Joined: Tue Jun 22, 2010 8:43 pm
Posts: 156
Location: UK

That is like what i've done to mine. you should leave out the barrel adjuster, should save a few grams there. I used the thin ferrule from the dura-ace cable set.
I don't need that adjuster as there's one on my frame's down tube. No need for two.

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artray

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 6:58 pm

Joined: Fri Oct 07, 2011 2:08 pm
Posts: 1366

Looks great and nice weight . :thumbup:

You Could see if stephen at fibre-lyte does a light weight cage

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kevosinn

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 7:44 pm

Joined: Mon Mar 05, 2012 7:28 am
Posts: 179

I actually got the cages down to 4 grams each. I removed a lot of material. I would be worried about the durability on those 2 gram cages haha

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KWalker

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 7:45 pm

Joined: Mon Dec 28, 2009 8:30 pm
Posts: 2946
Location: DC

NiFTY wrote:

A sram red rear derailleur stock is lighter by 13 grams over your tuned model.

But it still shifts like Dura Ace....

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bikejunkie

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Tue Aug 28, 2012 10:03 pm

Joined: Tue Jun 22, 2010 8:43 pm
Posts: 156
Location: UK

I have the inner cage from fibrelyte and was the standard one but i took the dremel to it. now 2 grams and no problems with durability still good.

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kevosinn

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Wed Aug 29, 2012 12:00 am

Joined: Mon Mar 05, 2012 7:28 am
Posts: 179

Just ordered my carbon pulleys!!!

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prendrefeu

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Wed Aug 29, 2012 12:05 am

Joined: Wed Oct 31, 2007 10:32 pm
Posts: 6696
Location: Los Angeles

Looks good! :thumbup:

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JLFast

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Wed Aug 29, 2012 1:20 am

Joined: Wed Aug 29, 2012 1:13 am
Posts: 11

Awesome thread! Great work!

I too have a Fibre-lyte cage from Stephen, he has been great to deal with.

Ive got Ti pulleys and Ti bolt kit.

I must say, it never occurred to me to remove the adjuster itself?! Thats a great idea, and one Im going to try out!

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kevosinn

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Wed Aug 29, 2012 1:38 am

Joined: Mon Mar 05, 2012 7:28 am
Posts: 179

The a good idea but unfortunately I don't have barrel adjusters on my current frame but my wilier zero.7 that I just ordered does

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bobbyOCR

Post subject: Re: Tuned Dura-ace 7900 derailleur

Posted: Wed Aug 29, 2012 11:39 am

Joined: Sun Sep 03, 2006 1:55 pm
Posts: 2053
Location: Western Australia

Love it!

Looks the business.

I might take my dremel to a spare 105 derailleur to see how light I can get it. Nice work.

Good to see some gems still pop up on WW.

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