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Old 2013-12-16, 10:00 PM   #9
bwrightback's Avatar
Join Date: Aug 2013
Location: Santa Cruz, CA
Posts: 952
Originally Posted by saskatchewanian View Post
I recently purchased a Nimbus D'brake brake mount to use on my KH36 with existing MU disk brake system. UDC/Nimbus have never stated that the brake mount would work for an outboard disk, and when asked they seem to dodge the question by stating that they were designed to be used in conjunction with their disk hubs.

The reason I wanted to try the D'brake is: I have to take the calliper off the mount every time I remove the wheel with the UCM. Not a major problem but annoying for someone who changes tires/wheels a lot.

Here is the differences I found between the UCM and D'brake mount

Mountain Uni UCM
slightly thinner, no clearance problems, mine would just barely work with a schlumpf.
Tighter fit on bearing, less chance of movement
taller brake mount arm,
- places calliper closer to the frame and makes the brake line go strait up.
- caliper needs to be removed when removing wheel

Nimbus D'brake mount
wider, would not work with a schlumpf without additional grinding/machining. less than 1mm clearance to spokes (nimbus hub, standard spacers)

So UDC says it allows you to use a disc brake on any muni. But you would also need a disc brake hub, too, right? I couldn't install a disc brake with this mount on a regular isis hub, can I?
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