XX1 rings alternative - it works!!

Discuss light weight issues concerning mountain bikes & parts.

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trychle
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by trychle

Sweet! Thanks for the information. Will order soon. :)

by Weenie


jacobHansen
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by jacobHansen

When Can we Expect to see a 36T for sram xx1 spiderless? I need that


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JensW
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by JensW

will there be a 38T for 110mm BCD? or could i use the cx rings

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tehan
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by tehan

JensW wrote:will there be a 38T for 110mm BCD? or could i use the cx rings



Sorry missed that. CX and mtb is same tooth design and strength. So if you are after 38T in 110BCD then you can get CX one and ride mtb.

thanks

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tehan
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by tehan

coming soon. 40T for 10speed.
40T is actually better choice than 42T because many frame designs are not capable of taking 42T with regular (non xx1) rear mech. I mean they will, but shifting performance and rubbing is bad. Therefore smaller size works better for conventional drivetrain.

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xc71
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by xc71

Tehan, would the 40T cog also work on XTR 11/34 9 spd cassette removing one of the smaller cogs of course.

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tehan
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by tehan

unfortunately not. First 11-34T is not good for the swap. The way this cog is designed needs to have 36T as a next one. It's about those spacing tabs in appropriate position relative to 36T.
Secondly because difference in spacing of 9 and 10speed, there would be 0.5mm difference. So it would not work properly at all.

9 and 10speed cassettes look very similar but if you measure them precisely you will see lots of differences.

xc71
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by xc71

tehan wrote:unfortunately not. First 11-34T is not good for the swap. The way this cog is designed needs to have 36T as a next one. It's about those spacing tabs in appropriate position relative to 36T.
Secondly because difference in spacing of 9 and 10speed, there would be 0.5mm difference. So it would not work properly at all.

9 and 10speed cassettes look very similar but if you measure them precisely you will see lots of differences.

Thanks for the reply. I'm aware of the different spacing between 9 & 10 spd, was hoping with the Limit screw adjusting the last cog that it would possibly work, but as you mention its designed around having a 36T cog to work properly.

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N.T
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by N.T

tehan,
are you planing on makin spiderless rings for Cannondale SI cranks?
Thre would me a market for them.
Fuelled by kofein

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tehan
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by tehan

already designed and ready to manufacture in Jan:)!
So soon you will see them.
Follow mt Fb page to see when exactly. (link below)

Marcin

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cerro
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by cerro

tehan: Oh, and I already got a Carbon-Ti. How is it with the spiderless wide/narrow for Sram?
/jonas l
http://cerrol.wordpress.com (my cyclingblog)

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tehan
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by tehan

sram and cannondale narrow/wide will be done in Jan.
In January/Feb we will release lots of stuff if time permits.

Trouble with Carbon-Ti is no offset to inside on the ring. I personally use Si SL cranks on one of my bikes and i have purchased long time ago one of their rings. I was not happy with the chain cross on last few granny cogs on cassette.
This is why we do 5mm offset (to the inside) on Sram and Cannondale offerings. This is exactly same offset as you would use spider+ring combo on outer position (double spider). Reason Carbon-Ti does it flat is cost of manufacturing. Using thicker material to mill would be extremely expensive. Using a press to bend it to shape would look cheap. Hence 0 offset on titanium rings.

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cerro
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by cerro

The good thing without offset Is that you can use a shorter spindle and get the q-factor really low.

But sounds great that the chainrings are on their way :D
/jonas l
http://cerrol.wordpress.com (my cyclingblog)

JensW
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by JensW

tehan wrote:coming soon. 40T for 10speed.
40T is actually better choice than 42T because many frame designs are not capable of taking 42T with regular (non xx1) rear mech. I mean they will, but shifting performance and rubbing is bad. Therefore smaller size works better for conventional drivetrain.

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Will the 40T work with 11-34? Considering that the different between 34 and 40 is the same as 36 to 42
Last edited by JensW on Sat Jan 04, 2014 12:28 pm, edited 1 time in total.

by Weenie


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