SRAM Red Rear Derailleur Tuning

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SRAM Red Rear Derailleur Tuning

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toutenhoofd

Post subject: SRAM Red Rear Derailleur Tuning

Posted: Thu Dec 18, 2008 1:22 am

Shop Owner

Joined: Tue Jul 15, 2008 12:39 am
Posts: 229
Location: Boulder, CO

Special thanks to coloclimber and dark_albert:
http://www.cyclingtechblog.com/2008/12/ ... erailleur/

Anyone get their SRAM Red rear derailleur lighter?

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critracer26

Post subject:

Posted: Thu Dec 18, 2008 1:29 am

Joined: Tue Nov 14, 2006 11:23 pm
Posts: 627
Location: New York, NY

nice to see some real ww stuff on here, seems to be so much other bs lately.

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Cyclist in the Sun

Post subject: Close...

Posted: Thu Dec 18, 2008 2:13 am

Joined: Mon Mar 31, 2008 4:27 am
Posts: 206
Location: The OC

Mine is 127.7 with a tuning kit. I guess a Fibre Lite inner plate might save a few grams, or some judicious paring down?

Attachments:

SRAM Red RD.JPG [ 115.55 KiB | Viewed 8379 times ]

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spinwax

Post subject:

Posted: Thu Dec 18, 2008 2:32 am

Shop Owner

Joined: Wed Dec 05, 2007 7:14 pm
Posts: 955
Location: Reno Nevada USA

Good stuff.

I can't wait to here how these ride. Mine shifts soooo well and crisp, I am really scared to mess with it for 20 or so grams.

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prendrefeu

Post subject: Re: Close...

Posted: Thu Dec 18, 2008 9:16 am

Joined: Wed Oct 31, 2007 10:32 pm
Posts: 6702
Location: Los Angeles

Cyclist in the Sun wrote:

Mine is 127.7 with a tuning kit. I guess a Fibre Lite inner plate might save a few grams, or some judicious paring down?

Tuning kit? As in you purchased a kit that is ready-to-go for modifying your Red RD rather than sourcing out individual bolts and such?
Could you provide a source for this "kit" ?

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TheBugMan

Post subject:

Posted: Thu Dec 18, 2008 10:09 am

Joined: Tue Feb 05, 2008 7:08 am
Posts: 2218
Location: Seattle ZOO - AfterReceivingComplaints, MyAvatarIsNowChanged. IGiveYouMySexyMug.

Great job toutenhoofd!

I'm sure these mods didn't cost nearly $1,200USD. May I ask how much $$$ you put into this project? I can't find that info in the blog.

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King Weel

Post subject: Re: Close...

Posted: Thu Dec 18, 2008 2:06 pm

Joined: Fri Jun 11, 2004 2:27 pm
Posts: 1136
Location: Leiden, The Netherlands

prendrefeu wrote:

Cyclist in the Sun wrote:

Mine is 127.7 with a tuning kit. I guess a Fibre Lite inner plate might save a few grams, or some judicious paring down?

Tuning kit? As in you purchased a kit that is ready-to-go for modifying your Red RD rather than sourcing out individual bolts and such?
Could you provide a source for this "kit" ?

Check www.xx-light-bikes.de (see under 'Aktuelles') for tuning kits.

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Cyclist in the Sun

Post subject: Re: Close...

Posted: Thu Dec 18, 2008 2:28 pm

Joined: Mon Mar 31, 2008 4:27 am
Posts: 206
Location: The OC

prendrefeu wrote:

Cyclist in the Sun wrote:

Mine is 127.7 with a tuning kit. I guess a Fibre Lite inner plate might save a few grams, or some judicious paring down?

Tuning kit? As in you purchased a kit that is ready-to-go for modifying your Red RD rather than sourcing out individual bolts and such?
Could you provide a source for this "kit" ?

http://www.likinbikin.com/Products/Dera ... Parts.html

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toutenhoofd

Post subject: Re: Close...

Posted: Fri Dec 19, 2008 4:34 am

Shop Owner

Joined: Tue Jul 15, 2008 12:39 am
Posts: 229
Location: Boulder, CO

Cyclist in the Sun wrote:

prendrefeu wrote:

Cyclist in the Sun wrote:

Mine is 127.7 with a tuning kit. I guess a Fibre Lite inner plate might save a few grams, or some judicious paring down?

Tuning kit? As in you purchased a kit that is ready-to-go for modifying your Red RD rather than sourcing out individual bolts and such?
Could you provide a source for this "kit" ?

http://www.likinbikin.com/Products/Dera ... Parts.html

http://www.likinbikin.com/Products/Dera ... Parts.html

This tuning kit interests me. It's not going to save quite as much weight as what I did, but the pulleys are alloy rather than carbon, and I suppose those might last longer. Does anyone here have experience with them?

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BmanX

Post subject:

Posted: Fri Dec 19, 2008 5:47 am

Joined: Thu Nov 10, 2005 5:31 pm
Posts: 4334
Location: Surrey B.C. Canada

Here is my 122g Sram Red RD. I am getting a new part built at work in the machine shop but I think I might only get it down to 121g.

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RWoodsHVAC

Post subject: Sram Red Rear Derailleur 117.5g

Posted: Mon Dec 14, 2009 7:53 pm

Joined: Mon Oct 06, 2008 6:14 pm
Posts: 86

Here is a tune i just put on a Sram Red Rear D/R after everything it weighs 117.5g

Attachment:

Bike Parts 030.jpg [ 61.56 KiB | Viewed 8103 times ]

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RWoodsHVAC

Post subject: Re: Sram Red Rear Derailleur 117.5g Picture complete

Posted: Mon Dec 14, 2009 7:58 pm

Joined: Mon Oct 06, 2008 6:14 pm
Posts: 86

Here is the complete D/R

Attachment:

bike parts 033.jpg [ 58.81 KiB | Viewed 8094 times ]

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RWoodsHVAC

Post subject: Re: Sram Red Rear Derailleur 117.5g

Posted: Mon Dec 14, 2009 8:17 pm

Joined: Mon Oct 06, 2008 6:14 pm
Posts: 86

Picture of back side

Attachment:

Bike Parts.jpg [ 61.54 KiB | Viewed 8060 times ]

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djconnel

Post subject: Re: Sram Red Rear Derailleur 117.5g

Posted: Mon Dec 14, 2009 8:38 pm

Joined: Wed Sep 26, 2007 1:57 pm
Posts: 6960
Location: San Francisco, CA

Nice! Lighter than the Lightweight, which is claimed 120 g:

I'm curious, however, how those pulleys will look in 2000 km.

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RWoodsHVAC

Post subject: Re: Sram Red Rear Derailleur 117.5g

Posted: Mon Dec 14, 2009 8:49 pm

Joined: Mon Oct 06, 2008 6:14 pm
Posts: 86

I agree the pulleys could be the weak link here, However they do have nice sealed bearings in them. The plates are rock solid. I guess worse case you could use KCNC pulleys and still be 124g.
For now i am going to run the carbon pulleys until they fail and will post results.

Thanks

Rick

Last edited by RWoodsHVAC on Mon Dec 14, 2009 10:51 pm, edited 2 times in total.

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