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PostPosted: Wed Oct 30, 2013 1:36 pm 
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Joined: Tue Oct 18, 2005 6:02 pm
Posts: 490
Location: The Netherlands
I bought a pair of S1/V1 (powerglide, force I think) rings in 52-38 to replace the X-Glide R rings on my Red Quarq cranks, but when I layed the new rings over the I noticed the holes in the spider are in a different place..

The bolt holes are offcourse equally far apart on both rings, so I can still mount the rings if I turn them a little. But the chaincatcher pin, which is supposed to fall behind the crankarm, would be above or below the crankarm in this case.
Is this a problem? Or are there other problems to be expected when mounting them like this?

Ergo, I want to put these rings:
Image

on this crankset:
Image

No go or no problem?

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PostPosted: Wed Oct 30, 2013 2:08 pm 
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Joined: Sat Oct 23, 2010 8:36 pm
Posts: 104
Just rotate 180° and drill out the pin.


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Posted: Wed Oct 30, 2013 2:08 pm 


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PostPosted: Wed Oct 30, 2013 2:13 pm 
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Joined: Fri May 25, 2007 6:43 pm
Posts: 1912
And set your front mech up very very carefully.

Overshifting will lead to a (potential) world of pain!


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PostPosted: Wed Oct 30, 2013 7:51 pm 
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Joined: Tue Oct 18, 2005 6:02 pm
Posts: 490
Location: The Netherlands
Thanks for the info, seems like a good solution! But will the shifting ramps work properly when the ring is turned 180 degrees?

Mattr, your concern is not having the pin there to stop the chain from jamming between the cranks and chainring when overshifting? Wouldn't it be better to have the ring mounted with the pin a little the crankarm then?

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PostPosted: Sat Nov 02, 2013 9:12 am 
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Joined: Sun Feb 25, 2007 5:05 pm
Posts: 72
Location: Netherlands
Using a ring with no drop pin would mean on overshift the chain will go down between the ring and crank. This leads to a very sudden (and likely expensive/painful) stop when the chain gets stuck (which it will 100% of the time). Use at own risk and if you do toss a chain to the outside stop pedaling immediately and put the chain back on by hand. Use at own risk. A catch pin not between the ring and crank is useless no matter how close, has to be between them to work. You can view the function--take the chain off to the outside and gently (to prevent marring the finish) turn the cranks to see what happens.

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PostPosted: Sat Nov 02, 2013 10:21 pm 
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Joined: Tue Oct 29, 2013 3:40 am
Posts: 20
I have been running an FSA chainring (for u19 gear restrictions) on my exogram cranks not a quarq but have the same issue. I just run it with the ring rotated and have NEVER had the chain jammed. However the only small issue i have had is that if the chain is dropped on the outside the chain can be hooked on the pin (you could just take it off however). With the front set up well this happens very rarely :thumbup:


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Posted: Sat Nov 02, 2013 10:21 pm 


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