REVIEWS DEALS BIKESHOPS TRAILS

Chain line for Karate Monkey and Roholff Speedhub

1102 Views 4 Replies 3 Participants Last post by Speedub.Nate, Jul 13, 2004

Baldone

Discussion Starter · Jul 12, 2004

I'm new to figuring out a good chain line and I am thinking of hooking up a striped down XT or LX crank, but will need to buy a new Bottom Bracket I'm thinking a shimano ES71 73x??? not sure anyone have any guesses? This is for a Karate Monkey 22 (XL) with a Rohloff Speedhub.

Last time I tired to figure out a chain line I ended up with an extra BB.

Any better ideas for the crank/chain ring. I'm new to not using a derailer, and am not familar with anything remotely singlespeed.

Post duplicated in 29'er Forum.

Save

1 - 5 of 5 Posts

c0jones

· #2 · Jul 12, 2004

link to other thread

whole bunch of KM & Rohloff experts over in the 29er forum:

http://forums.mtbr.com/showthread.php?t=35469

C Jones (Rohloff Speedhub is on my wish list)

Save

Speedub.Nate

· #3 · Jul 12, 2004

If you're going to run the ring in the outer position, you'll want a 113mm ES-71 for an XT crank, or a 121mm ES-51 for an LX 572 crank. Either of those would set the outer ring at 54mm, which is the chainline for the Speedhub's 15, 16 & 17T cogs.

Hey, I got your email but your Mr. Ed address bounced. Try again or PM me if you feel the need.

Save

Baldone

Discussion Starter · #4 · Jul 13, 2004

Yeah that address died years ago.

Speedüb Nate said:
If you're going to run the ring in the outer position, you'll want a 113mm ES-71 for an XT crank, or a 121mm ES-51 for an LX 572 crank. Either of those would set the outer ring at 54mm, which is the chainline for the Speedhub's 15, 16 & 17T cogs.

Hey, I got your email but your Mr. Ed address bounced. Try again or PM me if you feel the need.

Yeah that Ed address is long gone.

Thanks again Nate if I were to run the middle ring would a 118 work or would that not be far out enough?

Save

Speedub.Nate

· #5 · Jul 13, 2004

Baldone said:
Thanks again Nate if I were to run the middle ring would a 118 work or would that not be far out enough?

The 118 + XT crank (or 126 + LX crank) would give you a 50mm chainline, so you'd off by 4mm in the front. You could partially make this up by adding 1.5 or 2 or 3mm worth of spacers under the drive side flange, but that would offset your Q-factor to the right hand side by a similar amount.

You could also go with an XT crank and a 126mm ES-51. That should put your middle ring right at 54mm.

Save

1 - 5 of 5 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month