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PostPosted: Thu Dec 18, 2008 1:22 am 
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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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Posted: Thu Dec 18, 2008 1:22 am 


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PostPosted: Thu Dec 18, 2008 1:29 am 
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Joined: Tue Nov 14, 2006 11:23 pm
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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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 Post subject: Close...
PostPosted: Thu Dec 18, 2008 2:13 am 
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Joined: Mon Mar 31, 2008 4:27 am
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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
SRAM Red RD.JPG [ 115.55 KiB | Viewed 9000 times ]

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PostPosted: Thu Dec 18, 2008 2:32 am 
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Joined: Wed Dec 05, 2007 7:14 pm
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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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 Post subject: Re: Close...
PostPosted: Thu Dec 18, 2008 9:16 am 
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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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PostPosted: Thu Dec 18, 2008 10:09 am 
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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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 Post subject: Re: Close...
PostPosted: Thu Dec 18, 2008 2:06 pm 
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Joined: Fri Jun 11, 2004 2:27 pm
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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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 Post subject: Re: Close...
PostPosted: Thu Dec 18, 2008 2:28 pm 
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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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 Post subject: Re: Close...
PostPosted: Fri Dec 19, 2008 4:34 am 
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Shop Owner

Joined: Tue Jul 15, 2008 12:39 am
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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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PostPosted: Fri Dec 19, 2008 5:47 am 
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Joined: Thu Nov 10, 2005 5:31 pm
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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.

Image
Image

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PostPosted: Mon Dec 14, 2009 7:53 pm 
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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
Bike Parts 030.jpg [ 61.56 KiB | Viewed 8724 times ]


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PostPosted: Mon Dec 14, 2009 7:58 pm 
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Here is the complete D/R
Attachment:
bike parts 033.jpg
bike parts 033.jpg [ 58.81 KiB | Viewed 8715 times ]


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PostPosted: Mon Dec 14, 2009 8:17 pm 
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Joined: Mon Oct 06, 2008 6:14 pm
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Picture of back side
Attachment:
Bike Parts.jpg
Bike Parts.jpg [ 61.54 KiB | Viewed 8681 times ]


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PostPosted: Mon Dec 14, 2009 8:38 pm 
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Joined: Wed Sep 26, 2007 1:57 pm
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Location: San Francisco, CA
Nice! Lighter than the Lightweight, which is claimed 120 g:
Image

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

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PostPosted: Mon Dec 14, 2009 8:49 pm 
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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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Posted: Mon Dec 14, 2009 8:49 pm 


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