Shimano XT Shadow Rear Derailleur

[Heathcliffe]

For anyone who's had problems with shimano rear derailleurs rubbing on stumpy chainstays, i've just fitted the new XT M772 shadow on an 07 stumpy and it works a treat.

There is now a clear gap between the derailleur and the chainstay and the adjustment screw allows you to alter the gap to suit!!

You have to ensure you get the tension right in the cable from the outset as the cable now runs thru the derailleur mech straight towards the wheel (as opposed to parallel with older XT mech) so you have the snip the cable pretty short to give clearance from the spokes.

Seems to shift sweet but will post if get any issues!!
H

[crisillo]

I have had mine for over a month... and so far so good... shifts great

[wheelhot]

I wonder when is the XTR version coming out

[Heathcliffe]

I wonder when is the XTR version coming out

wiggle in the UK is listing late Nov!

[steveccnv]

I'd like to see a picture with the rear derailleur in the small ring and the front in the middle or big ring. That is where the clearence is an issue on my bike. I did however file the top part of the cage round so there is no sharp edge hitting the frame

[Student Driver]

I have had mine for over a month... and so far so good... shifts great

Wow, that's amazing! It even makes a Yeti look good! j/k... But seriously, it looks good.

[crisillo]

Wow, that's amazing! It even makes a Yeti look good! j/k... But seriously, it looks good.

Very funny

[bwalton]

I just replaced my old worn out M750 with a new RD-M761 XT derailleur and what a difference a newer updated model makes. The shifting is super crisp and other then setting the limit screws and the B-screw and tensioning the cable no other adjustments were required. I was thinking about getting the shadow model but I read that your frame and hanger alignment need to be perfect for it to shift properly. I have never had a rubbing issue with my 04 SJ’s dropouts.

[rkj__]

I read that your frame and hanger alignment need to be perfect for it to shift properly.

IMHO for the shifting to be PERFECT the hanger alignment needs to be PERFECT, regardless of what derailleur you use.

[Student Driver]

IMHO for the shifting to be PERFECT the hanger alignment needs to be PERFECT, regardless of what derailleur you use.

Ditto.

[crisillo]

IMHO for the shifting to be PERFECT the hanger alignment needs to be PERFECT, regardless of what derailleur you use.

agreed... the shodow doesn't have any "special requirements"

I actually I had a 761 before the shadow...direct swap.. good to go!

[bwalton]

Crisillo, does the Shadow XT derailleur shift better or about the same as the RD-M761 derailleur? The bike shop mechanic said that the shadow was designed around a bike with 120 mm of travel or greater. Is this true, if not what is the advantage of the shadow type derailleur over the old styles (M750 and M761)? All I know is that my combination of XT SIS shifters, XTR chain, XT cassette, XT front derailleur and the M761 XT rear derailleur and the XT hollow tech II two pieced crank-set is the smoothest and most precise shifting system that I have ever experienced. My drive train is so quiet and smooth, that if it were not for the clicking from the shifters I would never know the chain was changing gears.

[crisillo]

the shadow has a bit stronger spring... so you get a bit less chainslap.... if you don't experience it on your current RD....let it be for now...and try it out if your RD ever gets trashed....

[jaleel_da_sheik]

I saw one site that is peddeling the 2008 XT Shadow RD and there was a warning about the XT Shadow long cage only works up to a max size of 45 tooth chainring but that same site has no warning on the standard 2008 XT RD. Is this true? I'm looking at running the Shadow on a touring bike so that the rear panniers don't hit the RD, but if it only works with a max 45 tooth chainring then it is out of the running. Any help would be great!

[crisillo]

I saw one site that is peddeling the 2008 XT Shadow RD and there was a warning about the XT Shadow long cage only works up to a max size of 45 tooth chainring but that same site has no warning on the standard 2008 XT RD. Is this true? I'm looking at running the Shadow on a touring bike so that the rear panniers don't hit the RD, but if it only works with a max 45 tooth chainring then it is out of the running. Any help would be great!

it has a 45T maximum tooth capacity....not chainring size...


tooth capacity = (biggest cog - smallest cog) + (biggest chainring - smallest chainring)


the 08 RD had the same max. tooth capacity...


BTW..I run a long cage shadow XT on my commuter with a 39-53 crankset...no problem at all

[wheelhot]

Crisillo, is that a cyclocross bike?

[crisillo]

Crisillo, is that a cyclocross bike?

sort of..... Kona's Dew line is a commuter line... so the geo is "cyclocrossy", but not quite...

[wheelhot]

sort of..... Kona's Dew line is a commuter line... so the geo is "cyclocrossy", but not quite...

Aaah, I see, thanks for telling.

[Domann]

that's a smokin' dew plus!