SRAM Type 2 rear Mech becomes official

[Slowbee]

Thanks Covie.

 

And now, here's the non-ignorant answer to the same question: Actually, the clutch does serve a specific purpose. When you descend very bumpy, rocky terrain, it causes the weight of the chain to tug on the rear deraillleur, causing the chain to slap around more. This creates not only a lot of noise, but also greatly increases the chance of the chain dropping off the front chainring. The clutch basically stabilizes the derailleur cage which results in less chain slapping and increased performance. This improvement is aimed at riders that ride very rough terrain and/or ride very aggressively. It's for this reason that you can choose to buy a derailleur with or without the clutch(at least that's the case with Shimano, I'm guessing Sram will do the same).

 

Minty, by stabilize, do you mean minimizing forward backward motion of the derailleur?

[Capricorn]

Minty, by stabilize, do you mean minimizing forward backward motion of the derailleur?

 

chain slack comes from forward movement of the mech. The friction clutch limits that forward movement, but ensures free movement in the rearward direction as that's when the chain tension increases again. In summary, the purpose of the clutch is to limit sudden forward movement which would reduce chain tension, and increase the risk of chain slap and ultimately chain derailment.

[Capricorn]

little vid to help explain things

 

[Slowbee]

do all derailleurs have these clutches ? If not why not ?

[covie]

Most of the shimano tech already use "shadow" technology, mostly from SLX up. Though SLX shadow only comes out next year i think. The SRAM options are only on the X9 and XO options for this year as far as i know.

 

Speaking under correction though.

[MintSauce]

so as you and and capri said its pretty much useless makes your bike a little quiter and it will cost you double the price of the current version, nothing ignorant about it. its just a gimick to do more sales. dont get me wrong i run full SRAM and i love the stuff, but this has absolutly no advantage over previous modes. The slapping does not affect performance at all and there is no evidence to support or deny the fact.

 

Have you been taught that when you descend rocky/bumpy/technical/high speed trails that you should shift onto your big ring in the front? Either way, what that does is it takes up the slack in the chain. By doing that the chain can't move around as much as a result of the slack and it's own weight causing it to clatter up and down. It is this movement that will cause your chain to drop. If I don't do it, I drop the chain almost every time, like 9/10 times. Developing a system that counters that is a significant improvement and a hell of a long way off of 'useless'. Significant enough that I will actually buy a new derailleur to get it.

 

If you ride technical, bumpy trails at high speed, this is, in my opinion, a godsend. Just because it's of no use to you personally doesn't make it useless. And if you refuse to see the logic then you are being ignorant.

 

Also, Shadow technology has been available on SLX since launch some 3 years ago. It refers to the position of the rear derailleur tucked under the frame. The clutch system is denoted by the Shadow Plus name, which is new to SLX for the 2013 models.

[kosmonooit]

do all derailleurs have these clutches ? If not why not ?

 

Because technology evolves

[covie]

Have you been taught that when you descend rocky/bumpy/technical/high speed trails that you should shift onto your big ring in the front? Either way, what that does is it takes up the slack in the chain. By doing that the chain can't move around as much as a result of the slack and it's own weight causing it to clatter up and down. It is this movement that will cause your chain to drop. If I don't do it, I drop the chain almost every time, like 9/10 times. Developing a system that counters that is a significant improvement and a hell of a long way off of 'useless'. Significant enough that I will actually buy a new derailleur to get it.

 

If you ride technical, bumpy trails at high speed, this is, in my opinion, a godsend. Just because it's of no use to you personally doesn't make it useless. And if you refuse to see the logic then you are being ignorant.

 

Also, Shadow technology has been available on SLX since launch some 3 years ago. It refers to the position of the rear derailleur tucked under the frame. The clutch system is denoted by the Shadow Plus name, which is new to SLX for the 2013 models.

 

I basically only ride technical bumpy trails and have never had the issue not on my 3x10 or my 2 x 10 setups,and i am a seriously aggressive rider, like shimano said its basically to make less noise. Thats the key benefit.

Edited March 17, 2012 by covie

[Johan Bornman]

I think most of us will appreciate the Cage Lock feature and only some, the clutch, at first. However, I think once you're used to the clutch and ride with an older derailler, you'll miss the silence.

[covie]

I think most of us will appreciate the Cage Lock feature and only some, the clutch, at first. However, I think once you're used to the clutch and ride with an older derailler, you'll miss the silence.

Never said the silence is not a good thing it is. Was just saying that if they want to increase the price becuase of the clutch i woudlnt buy it. Since its the same price well i dont mind the extra couple of grams.

Edited March 17, 2012 by covie

[Capricorn]

I think most of us will appreciate the Cage Lock feature and only some, the clutch, at first. However, I think once you're used to the clutch and ride with an older derailler, you'll miss the silence.

 

coming off the mountain earlier this evening i was wishing I had another chainstay cover, or that damn clutch. I'd appreciate that silence.