New XT.

pharmaboy said:
Nah, it's recent - no black out plates on any 2015 on mtbr - mine were a proper Aus delivered retail box - no blanking plates. Obviously someone apt shimano thinks those windows are awesome
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Bummer. Why Shimano keeps making them anyways?

OTOH... these go to ELEVAN!!!
 
pharmaboy said:
Nah, it's recent - no black out plates on any 2015 on mtbr - mine were a proper Aus delivered retail box - no blanking plates. Obviously someone apt shimano thinks those windows are awesome
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OR, they want to encourage you to move everything to iSpec 2 with new brakes, or suffer with xtr bar clamp. This is my vote.
 
moorey said:
OR, they want to encourage you to move everything to iSpec 2 with new brakes, or suffer with xtr bar clamp. This is my vote.
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Haha - that would be the most hedonistic thing ever. In order to avoid a bit of tape over your shifter, you have to get new brakes..... ;D

Anyway, for anyone that has a new build on the way, given the longevity of the sram cassette, the extra range, and the superior shifting of the XT, not to mention the far better value - get XT shifter and dérailleur , and if budget allows, get the SRAM cassette ( make sure you change your chains often though)
 
I just checked the XTR 11-40, and the chain did not derail at all when back-pedalling. That's with a shimano 11sp chain (105)
ImageUploadedByTapatalk1440206099.987972.jpg
 
Just tested the 10:42 for back pedalling, and yes drops down to the next cog from the 42 but not any problem in any other gears.

Speculation - 40 is all good, 42 is a little bit of a stretch . So if you are the type who does a full spin backward while in the 42, then get a 40 cassette. Personally, back pedalling is rare for me and it's only in the middle of the cassette through rocks etc - in the 42 it would very by occasional and a quarter turn at most
 
pharmaboy said:
Just tested the 10:42 for back pedalling, and yes drops down to the next cog from the 42 but not any problem in any other gears.

Speculation - 40 is all good, 42 is a little bit of a stretch . So if you are the type who does a full spin backward while in the 42, then get a 40 cassette. Personally, back pedalling is rare for me and it's only in the middle of the cassette through rocks etc - in the 42 it would very by occasional and a quarter turn at most
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Thanks for the feedback. Pedaling backwards is a bad old habit I have from when I'm coasting. Something I don't expect to do in the big cog to be honest. Not that it will stop me from getting a 11-42. It just gives me more options.
 
Was the first thing I noticed on sram x01 11sp but its never been an issue on the trail, just in the garage. I know its chainline related but I'd hazard a guess its also rear axle to bb height related too, so some bikes with a higher bb or less sag might cope better I wonder.
 
pharmaboy said:
Just tested the 10:42 for back pedalling, and yes drops down to the next cog from the 42 but not any problem in any other gears.

Speculation - 40 is all good, 42 is a little bit of a stretch . So if you are the type who does a full spin backward while in the 42, then get a 40 cassette. Personally, back pedalling is rare for me and it's only in the middle of the cassette through rocks etc - in the 42 it would very by occasional and a quarter turn at most
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Would increasing chain tension by taking a link or 2 off the chain help, or would it cause other problems?

Also, could I use Zee cranks with a NW ring for an XT drivetrain, or would it be better to use the XT 1x cranks + Shimano NW XT chainring?
 
ForkinGreat said:
Would increasing chain tension by taking a link or 2 off the chain help, or would it cause other problems?

Also, could I use Zee cranks with a NW ring for an XT drivetrain, or would it be better to use the XT 1x cranks + Shimano NW XT chainring?
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Zee cranks with NW will be sweet.
 
ForkinGreat said:
Would increasing chain tension by taking a link or 2 off the chain help, or would it cause other problems?

Also, could I use Zee cranks with a NW ring for an XT drivetrain, or would it be better to use the XT 1x cranks + Shimano NW XT chainring?
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Probably not, it happens on the top, not the bottom where the clutch or derailleur is pulling on the chain creating tension. I should also let all the air out of the shock and cmpress the rear and see what happens with the chain falling off, probably nothing.

Yup zee with an NW ring will work, for any drivetrain combination. I'd go the cheapest option but with the best bling bling ring.
 
Mywifesirrational said:
Lucky bugger, any idea what your chainstay length is? or front ring spacing?
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Chainstay is a long 17.5". This would probably help the issue quite a bit.

Chainline is probably around 51mm (it's a specialized, so it came with the chainline for 142+, which i am guessing is around 52mm, but I have a 30t Race Face narrow wide which moves that chainline back inboard by 1 or 2 mm.)
 
ForkinGreat said:
Would increasing chain tension by taking a link or 2 off the chain help, or would it cause other problems?
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It'd do absolutely stuff all because derailleur spring is what controls chain tension, not chain length. Making the chain shorter would cause little problems like ripping your derailleur off or apart....
 
Boom King said:
Zee cranks with NW will be sweet.
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Mywifesirrational said:
Probably not, it happens on the top, not the bottom where the clutch or derailleur is pulling on the chain creating tension. I should also let all the air out of the shock and cmpress the rear and see what happens with the chain falling off, probably nothing.

Yup zee with an NW ring will work, for any drivetrain combination. I'd go the cheapest option but with the best bling bling ring.
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Cool, thanks BoomKing & MWI
 
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