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Sram Red YAW front derailleur chain catcher fitment

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Sram Red YAW front derailleur chain catcher fitment

Old 04-25-12, 05:35 PM
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plpete
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Sram Red YAW front derailleur chain catcher fitment

Im looking for some input / experiences with installing the new Sram Red YAW front derailleur chain catcher on your frames. I have the new derailleur installed on my Cervelo RS and shifting is great. When i went to attach the chain catcher I run into a clearance issue. The seat tube squares of at the bottom and becomes wider. When i attach the chain catcher there is pretty much no room to move it towards the frame and the catcher touches the chain. Im unable to create a small gap as per instructions. It looks like I would have to file away of a bit of the catcher in order to create some extra room to move it away from the small ring and chain. Has anyone had a similar issue installing the new RED front derailleur?
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Old 04-25-12, 05:38 PM
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Is the catcher removable?

If so there are compatible catcher out there for XCross that are shorter. They will work with a 39T but may not with a 34T.
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Old 04-25-12, 06:07 PM
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Plenty of room on a Cervelo S2 frame.

Take a pic - maybe someone can come up with a suggestion
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Old 04-25-12, 06:11 PM
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Install was super easy on 2012 Defy Advanced as well. I also suggest posting a photo of the issue.

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Old 04-25-12, 06:25 PM
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Not sure if this will help you or not, but here is what the k-edge one looks like installed on a RS. excuse the filth.

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Old 04-25-12, 06:35 PM
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On my bike.

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Old 04-25-12, 07:21 PM
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Some of these chain catchers seem to be straight coming off the attaching bolt. The Sram one has a slight curve towards the frame. I just took two photos with my phone.

See how close the actual derailleur sits to the down tube



Here with the chain catcher installed you can clearly see the catcher touching the braze on to where the derailleur is attached to. If the catcher was straight at that section there would be room for adjustment.



I may have to file down the section where the Sram logo is although I wish there was a cleaner way to do this.
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Old 04-25-12, 07:43 PM
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Originally Posted by plpete View Post
Some of these chain catchers seem to be straight coming off the attaching bolt. The Sram one has a slight curve towards the frame. I just took two photos with my phone.

See how close the actual derailleur sits to the down tube

Here with the chain catcher installed you can clearly see the catcher touching the braze on to where the derailleur is attached to. If the catcher was straight at that section there would be room for adjustment.

I may have to file down the section where the Sram logo is although I wish there was a cleaner way to do this.
Well I think I'm the only one that posted the SRAM Red chain catcher...yes yours is MUCH closer to the frame than mine is. Don't know what to say there...I have tons of room on my Giant that you clearly don't have on your Cervelo.
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Old 04-25-12, 08:54 PM
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I filed my Sram yaw catcher so it'd fit on my Cervelo.
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Old 04-25-12, 09:58 PM
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sorry to ask, what is chain catcher for?
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Old 04-26-12, 04:57 AM
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Originally Posted by ericm979 View Post
I filed my Sram yaw catcher so it'd fit on my Cervelo.
Looks like that's what I might have to do. Would you happen to have a photo of your final outcome. It looks like if the chain catcher was straight from the attachment point without the curve it would allow for extra clearance.
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Old 04-26-12, 05:00 AM
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Originally Posted by coolmingli View Post
sorry to ask, what is chain catcher for?
As the name implies, it catches the chain and prevents it from falling off of the small chain ring when shifting in certain situations and lodging itself between the small ring and the BB. I've seen quite a few frames with some damaged BB because of this. Its a good investment, especially if you have a carbon frame.
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Old 04-26-12, 10:43 AM
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Originally Posted by coolmingli View Post
sorry to ask, what is chain catcher for?
If A Schleck is on line, can he please answer this.
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Old 04-26-12, 11:35 AM
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Originally Posted by plpete View Post
Looks like that's what I might have to do. Would you happen to have a photo of your final outcome. It looks like if the chain catcher was straight from the attachment point without the curve it would allow for extra clearance.
The dogleg is there so the catcher won't interfere with the derailleur cage.

My derailleur is mounted lower down (I'm using 50/34 chainrings) so I had to file the corner of the catcher. Yours is different. There's plenty of metal there, don't worry about it.
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Old 04-26-12, 11:40 AM
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It's a bit tight, but I have it installed on a Cervelo R3 without any issues (Was running the K-Edge) and then moved to the SRAM (the new front derailleur shifts so smoothly!)
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Old 04-26-12, 12:05 PM
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I had to file a notch on my Rotor catcher on my RS. It's the head on the rivet holding the derailluer hanger to the frame that's getting in the way.. Pretty quick to do..
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Old 04-26-12, 12:58 PM
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Exactly. The part of the catcher that has the Sram logo on it is pretty beefy so removing some of it should be fine. I will file away a little bit of it at a time until I reach desired clearance.
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