Lance Roberts Posted November 10, 2015 Share and there is no spacer on the crank spindle between the spider and the bb? if so the only way out is to space the chainring Nope, there's nothing between the BB and crank.I'm now wondering if the 1x M8000 crank would solve this problem? They say it has an extended chainline from 50mm to 53mm, I wonder if that would be enough, and would there still be enough clearance between the chainring and the chainstay..... Link to comment Share on other sites More sharing options...
Mike Bike Posted November 10, 2015 Share Nope, there's nothing between the BB and crank.I'm now wondering if the 1x M8000 crank would solve this problem? They say it has an extended chainline from 50mm to 53mm, I wonder if that would be enough, and would there still be enough clearance between the chainring and the chainstay.....what clearance do you currently have? Link to comment Share on other sites More sharing options...
Lance Roberts Posted November 10, 2015 Share what clearance do you currently have?I don't have the bike with me at the moment, so cant take any pictures. I did check it though and it's still quite far away from the chainstay... Link to comment Share on other sites More sharing options...
Mike Bike Posted November 10, 2015 Share then you should be ok to use the 8000 crank, there was one for sale on here yesterday without chainrings @1700 Link to comment Share on other sites More sharing options...
Lance Roberts Posted November 10, 2015 Share then you should be ok to use the 8000 crank, there was one for sale on here yesterday without chainrings @1700 It was a 2x crank, problem is I'll then have to fit the bill for an FD and shifter too. Oh, and the chainrings. If I get the 2x crank and convert it to 1x with a single chainring I think I'll end up with the same problem as I'm having now. Link to comment Share on other sites More sharing options...
Mike Bike Posted November 10, 2015 Share It was a 2x crank, problem is I'll then have to fit the bill for an FD and shifter too. Oh, and the chainrings. If I get the 2x crank and convert it to 1x with a single chainring I think I'll end up with the same problem as I'm having now.rather stay 1X Link to comment Share on other sites More sharing options...
AJG Posted November 10, 2015 Share It's so bad that I can not back pedal while in 37 or 42, the chain jumps down to the middle of the cassette... This is a know issue with XT 1 x 11. If you back peddle while on the 42 the chain can jump down to the 37. If yours jumps to the middle of the cassette then there is an issue with your chain line. So the back peddling chain jump is not really an issue. The extent that yours jumps is. Link to comment Share on other sites More sharing options...
Lance Roberts Posted November 10, 2015 Share This is a know issue with XT 1 x 11. If you back peddle while on the 42 the chain can jump down to the 37. If yours jumps to the middle of the cassette then there is an issue with your chain line. So the back peddling chain jump is not really an issue. The extent that yours jumps is. Sorry, I meant it jumped while on the 42t and ends up on the middle of the cassette. It doesn't jump while on the middle gears of the cassette. Link to comment Share on other sites More sharing options...
rock Posted November 10, 2015 Share step 1: pedal forwards I've had it with 1x10 set ups, but I believe its a symptom of a new chain, once it 'wears in' I believe it should be better. each time I have set up 1x10 its been new and never kept it that long but never remember that problem when I had 1x9 and that was with older parts so might explain the 'worn in' chain theory. I also think the 2x crank doesn't have the best chain ring position so rather use a 3x crank and use the middle position. Never fiddle with BB spacers, your crank arms need to be centered! I'm considering the 11sp M8000 setup so keen to see if the problem gets fixed. Link to comment Share on other sites More sharing options...
AJG Posted November 10, 2015 Share Sorry, I meant it jumped while on the 42t and ends up on the middle of the cassette. It doesn't jump while on the middle gears of the cassette. I wrote "if yours jumps TO the middle of the cassette" i.e. from the 42.....then there is a problem. Link to comment Share on other sites More sharing options...
rock Posted November 10, 2015 Share It was a 2x crank, problem is I'll then have to fit the bill for an FD and shifter too. Oh, and the chainrings. If I get the 2x crank and convert it to 1x with a single chainring I think I'll end up with the same problem as I'm having now. I dont think the 11-42 will work with 2 chain rings up front, think only the 11-40 will work. Link to comment Share on other sites More sharing options...
WrightJnr Posted November 10, 2015 Share This is my chainline with new XT 11 speed. SRAM double crank with RaceFace 32T 104BCD mounted to inside of spider. 104 links in chain (Camber Expert Evo XL Frame) 11-42 rear cassette. Your L & H & B screw settings are critical. The only issue I have is back pedaling on the 42 will drop it to the 37. But I've never back pedaled up a cliff so only been an issue on the bike stand. IMO, the 11 speed setup is very sensitive. Logic says that Shimano have not changed the width of the cassette since 9 speed so tolerances at 11 speed are small. It's a very sensitive setup. Been using it for 3 months now and just finished W2W on it, never once went searching for an extra gear. Link to comment Share on other sites More sharing options...
Lance Roberts Posted November 10, 2015 Share ImageUploadedByTapatalk1447175475.543446.jpgImageUploadedByTapatalk1447175512.010337.jpgImageUploadedByTapatalk1447175534.705509.jpgThis is my chainline with new XT 11 speed. SRAM double crank with RaceFace 32T 104BCD mounted to inside of spider. 104 links in chain (Camber Expert Evo XL Frame) 11-42 rear cassette. Your L & H & B screw settings are critical. The only issue I have is back pedaling on the 42 will drop it to the 37. But I've never back pedaled up a cliff so only been an issue on the bike stand. IMO, the 11 speed setup is very sensitive. Logic says that Shimano have not changed the width of the cassette since 9 speed so tolerances at 11 speed are small. It's a very sensitive setup. Been using it for 3 months now and just finished W2W on it, never once went searching for an extra gear. Thanks for that, I'll keep on trying till I get to a good setup. Link to comment Share on other sites More sharing options...
NicoBoshoff Posted November 11, 2015 Share ImageUploadedByTapatalk1447175475.543446.jpg ImageUploadedByTapatalk1447175512.010337.jpg ImageUploadedByTapatalk1447175534.705509.jpg This is my chainline with new XT 11 speed. SRAM double crank with RaceFace 32T 104BCD mounted to inside of spider. 104 links in chain (Camber Expert Evo XL Frame) 11-42 rear cassette. Your L & H & B screw settings are critical. The only issue I have is back pedaling on the 42 will drop it to the 37. But I've never back pedaled up a cliff so only been an issue on the bike stand. IMO, the 11 speed setup is very sensitive. Logic says that Shimano have not changed the width of the cassette since 9 speed so tolerances at 11 speed are small. It's a very sensitive setup. Been using it for 3 months now and just finished W2W on it, never once went searching for an extra gear.Shot for this. I have a Stumpy FSR and just took delivery of my M8000 upgrade parts (so not the crank) and have been hesitant to make the swop given the issues raised about chainline. However, your photo's settle my nerves a bit. On my current 1x10 setup the line is angled in the 36t, but I am running a short cage Zee RD and as you say the width of the cassette hasn't changed so with the longer cage and the correct chain legth it shouldn't be worse (on my 1x10 backpedalling also causes a single ring drop, but less so after it's been ridden in). Link to comment Share on other sites More sharing options...
NicoBoshoff Posted November 11, 2015 Share Having said that I am tempted to order a new ring from Kalbo and just get the spacers included. Would my LBS have the correct length chainring bolts to accomodate the spacers? Link to comment Share on other sites More sharing options...
JXV Posted November 11, 2015 Share Did you get the spacers from Kalbo? Or equivalent to those? Problem I'm seeing is that the 32t chainring does not sit flush with the crank, because it's smaller than the 34t the 32t sticks out a bit and I'm worried that the spacers wont fit over it... 32toval_elliptical_104bcd_chainring_8.jpg 34toval_elliptical_104bcd_chainring_9.jpgHi Lance I got spacer washers in the kit from Kalbo. That 32t chainring pic you posted shows that it is threaded to receive the chainring bolt and has a raised 'collar'. Never seen this before. What are the outer diameters of the two raised bits? For comparison the outside diameter of the female threaded collar of a normal chainring bolt is 9.85mm. So a spacer washer with i.d. of 10 mm fits over them. Also....that 32t should be mounted with the raised collars facing the spider and not facing the BB. Presume you fitted it this way? Link to comment Share on other sites More sharing options...
.thumb.png.75d6381975d6e967f7f244707be5c209.png)
Recommended Posts
Archived
This topic is now archived and is closed to further replies.