dthomso1 Posted July 4, 2010 Share #1 Posted July 4, 2010 Does anyone have a suggestion as to why my rear brake rotor seems to be only making good contact with the outer half of the swept area? Rotor is new and the caliper recently rebuilt by one of the pros on this board. I have been underwhelmed by the braking action at the rear - it is worse than with the old, worn rotor, caliper and old rubber brake hoses! Link to comment Share on other sites More sharing options...
bkuhr Posted July 4, 2010 Share #2 Posted July 4, 2010 What does inside of rotor look like, if worn on 'inside' of swept area, would suspect somehow that the caliper is not square with the rotor.- meaning caliper bracket bent. Just a suggestion:2cents: Link to comment Share on other sites More sharing options...
GeorgeS Posted July 4, 2010 Share #3 Posted July 4, 2010 Did you re-install the Axel Washer in the correct position? Link to comment Share on other sites More sharing options...
dingy Posted July 4, 2010 Share #4 Posted July 4, 2010 (edited) Doug, Attached is a thread that will show the axle re-assembly order. http://www.venturerider.org/forum/showthread.php?t=515 Just a question here, Is the brake pad installed correctly? Are they the correct pads? If you still have your old pads, compare them. In your first picture, it looks like the bottom of the pad isn't coming down below the lower surface (Inner I.D. of contact area) of the rotor. I don't know if you could even install it wrong, but the picture puzzles me. Do you have an MKI rotor installed? Also, another interesting thing is the orientation of the Yamaha logo, it should be parallel to ground. Do you maybe have front and rear caliper switched? Bleeder valve should be at highest point on caliper body. Gary Edited July 4, 2010 by dingy Link to comment Share on other sites More sharing options...
dthomso1 Posted July 4, 2010 Author Share #5 Posted July 4, 2010 Thanks guys for the suggestions. The inside contact area of the rotor is perfectly normal. Gary may be on to something - perhaps I switched the front and rear calipers! I'll have a look tomorrow as long as life doesn't get in the way. I think I will pull the axle to ensure I reassembled it correctly It is indeed a Mk. 1 rotor. Thanks again! Doug Link to comment Share on other sites More sharing options...
dingy Posted July 4, 2010 Share #6 Posted July 4, 2010 You should not have to pull the axle out. A visual inspection should suffice to determine component assembly. I do think the front and rear calipers are swapped though. Gary Link to comment Share on other sites More sharing options...
Bill W. Posted July 5, 2010 Share #7 Posted July 5, 2010 (edited) Looks like... But I had to go out to the garage to look to be sure. Darned if I could tell the difference, other than the Yamaha emblem on the caliper. At least my contact pattern on the rear rotor is all the way across it. I owe it all to clean living and this forum!!! Edited July 5, 2010 by Bill W. Being a D.A. Link to comment Share on other sites More sharing options...
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