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PostPosted: Tue May 21, 2013 9:28 am 
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Joined: Mon Aug 06, 2007 1:22 am
Posts: 166
I'm reading the rotor install guide that indicates there should be no more than 1.5mm of clearance from the teeth to the FD cage.

Does anyone know if they mean this for the tallest point of the chainring or the lowest point?

thanks in advance!


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Posted: Tue May 21, 2013 9:28 am 


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PostPosted: Tue May 21, 2013 10:04 am 
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Joined: Sat Apr 18, 2009 8:59 am
Posts: 539
Location: Surrey UK
Derailleur must be positioned the way that will allow a free movement of the cage over the bigger ring.
If you set it up to the smaller diameter you will not be able to move it on or off the big ring.

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Pronghorn XC SW Race 8284g/18.26lb


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PostPosted: Fri May 24, 2013 10:52 pm 
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Joined: Fri Aug 05, 2011 5:18 am
Posts: 119
The highest point of the ring, should be where you take the measurement.

Be patient, pay attention to what you're doing, and these shouldn't be too much of a headache to install.


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PostPosted: Mon May 27, 2013 3:59 am 
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Joined: Thu Feb 05, 2009 12:04 am
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Location: Gold Coast, QLD, Australia
I find that 1mm at the highest point is about the sweetspot, but be prepared to fine tune the height a number of times.

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PostPosted: Sat Jun 01, 2013 5:31 pm 
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Joined: Mon Aug 06, 2007 1:22 am
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thanks guys.. this was all very helpful. finally on the road at last.

Going from the small to big ring is still a little wonky and takes several tries. I think I have the gap at a tiny bit less than 1mm, going to try moving it a bit and see if I can get this working properly.


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PostPosted: Sat Jun 01, 2013 6:27 pm 
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Joined: Tue Jan 05, 2010 12:29 am
Posts: 141
another tip that may work for you is to adjust the tail of the front d cage inwards (towards the wheel) 1-2 mm more then you would normally. I find this position helps with upshifts.


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PostPosted: Sat Jun 01, 2013 7:48 pm 
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Joined: Sat Apr 18, 2009 8:59 am
Posts: 539
Location: Surrey UK
Bear in mind, these rings do not follow to the category of the best gear changing rings :wink:
Having said that, after a number of tiny adjustments finally I can be happy with these fellas.

PS.
I am sure that the flimsy Red with Ti cage plays its role there as well.

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Cervelo R5 VWD 5637g/12.43lb
Pronghorn XC SW Race 8284g/18.26lb


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Posted: Sat Jun 01, 2013 7:48 pm 


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PostPosted: Sun Jun 02, 2013 12:40 pm 
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Joined: Thu Feb 05, 2009 12:04 am
Posts: 1118
Location: Gold Coast, QLD, Australia
I have no problem with mine, once they are set up right.

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