The difference between these two SRAM Red derailleurs
12-26-08, 03:10 PM
#1
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The difference between these two SRAM Red derailleurs
I think the first one is the 2009 model? The big difference I see is the screw on the back end of the cage has switched sides. I'm thinking about getting the one with the screw on the outside of the cage. I have a force der right now and the chain hits the screw and limits the movement of the chain. Anyone care to comment on the difference these two derailleurs? Pros cons to each?
First one: Notice the cage screw on the inside
Second one: and the cage screw on the outside
First one: Notice the cage screw on the inside
Second one: and the cage screw on the outside
Last edited by Medpilot; 12-26-08 at 06:15 PM.
12-26-08, 05:03 PM
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I thought the difference was one was in a plastic bag...
I can't think of a point that a properly adjusted derailleur would experience a problem with the chain rubbing that bolt. (thinking about the travel of the chain on the cassette and chain rings)...
I can't think of a point that a properly adjusted derailleur would experience a problem with the chain rubbing that bolt. (thinking about the travel of the chain on the cassette and chain rings)...
12-26-08, 06:38 PM
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Wow guys.
I see what you're talking about, but don't know the difference. Just letting you know I actually DO understand.
I see what you're talking about, but don't know the difference. Just letting you know I actually DO understand.
12-26-08, 06:39 PM
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Good choice with that last post. Even though you said cage my first thought was to look at the limit screws and the bolt that holds the cable. Others may be making the same mistake. I do not however think that screw should be causing too many problems as it appears to be at the same depth as the rest of that side of the cage.
12-26-08, 06:48 PM
#11
Crazy idea here, but why not email sram?
12-26-08, 07:52 PM
#12
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I figured the forum would be faster...but that's not a bad idea.
As far as the screw being flush, it does appear that way on the Red dr with the screw on the inside. The dr where the screw is on the outside just looks like a better design to me.
As far as the screw being flush, it does appear that way on the Red dr with the screw on the inside. The dr where the screw is on the outside just looks like a better design to me.
12-26-08, 08:26 PM
#13
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you bought the wrong model. return it now, you want the fd with the screw on the inside. you seriously need to do some wind tunnel testing. i for can feel significant drag when the FD has a screw on the outisde. you save roughly 7.8 watts when the screw is on the insdie, in other words if your a tri alethet, the inside screw will save 37seconds on your road ride.
12-26-08, 08:33 PM
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I have two Red FDs and they are both "outside" screwed, with the black plastic inside. One I've had for a year and the other I just bought, although it's been sitting in the shop for a while so if they did change it for 2009, it's likely an older model. The Red FDs had problems with not being stiff enough, and I can see the "new" design being stiffer due to the material wrapping around the back of the cage instead of screwing in right there.
12-26-08, 08:45 PM
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you bought the wrong model. return it now, you want the fd with the screw on the inside. you seriously need to do some wind tunnel testing. i for can feel significant drag when the FD has a screw on the outisde. you save roughly 7.8 watts when the screw is on the insdie, in other words if your a tri alethet, the inside screw will save 37seconds on your road ride.
I have two Red FDs and they are both "outside" screwed, with the black plastic inside. One I've had for a year and the other I just bought, although it's been sitting in the shop for a while so if they did change it for 2009, it's likely an older model. The Red FDs had problems with not being stiff enough, and I can see the "new" design being stiffer due to the material wrapping around the back of the cage instead of screwing in right there.
Now this is going to sound stupid, but I could not find email contact information on SRAM's website. Either I'm blind or they don't want to be contacted.
12-26-08, 08:56 PM
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IIRC, the shop ordered an extra set of Red to stock when they ordered my set, and it had been sitting there since then, until I just bought it all up for my SL2, and temporarily gave them a home on my tricross...
