SRAM Red Rear Derailleur Tuning

Discuss light weight issues concerning road bikes & parts.
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toutenhoofd
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by toutenhoofd

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

Anyone get their SRAM Red rear derailleur lighter?
www.cyclingtechnology.com
(NOTE: This poster owns a retail business selling weight conscious bike related products.)

by Weenie


critracer26
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by critracer26

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

Cyclist in the Sun
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by Cyclist in the Sun

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
A day isn't the same when I don't ride.

I work in the bicycle industry.

spinwax
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by spinwax

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
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by prendrefeu

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
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by TheBugMan

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
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by King Weel

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.

Cyclist in the Sun
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by Cyclist in the Sun

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
A day isn't the same when I don't ride.

I work in the bicycle industry.

toutenhoofd
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by toutenhoofd

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?
www.cyclingtechnology.com
(NOTE: This poster owns a retail business selling weight conscious bike related products.)

BmanX
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by BmanX

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.

Image
Image
BIG DADDY B FLOW
AERO & LIGHT is RIGHT

Cervelo SLC 5960g/13.13 lbs

RWoodsHVAC
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by RWoodsHVAC

Here is a tune i just put on a Sram Red Rear D/R after everything it weighs 117.5g
Bike Parts 030.jpg

RWoodsHVAC
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by RWoodsHVAC

Here is the complete D/R
bike parts 033.jpg

RWoodsHVAC
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by RWoodsHVAC

Picture of back side
Bike Parts.jpg

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djconnel
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by djconnel

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

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

RWoodsHVAC
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by RWoodsHVAC

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.

by Weenie


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