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New 1800C with only 275 miles. The rear caliper can be wiggled/moved side to side with slight play between the pads and the disk. Is this loose?? The front can not be moved and are tight. Bolts seam to all be tight. Does this sound right??
 

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johnny1088 said:
New 1800C with only 275 miles. The rear caliper can be wiggled/moved side to side with slight play between the pads and the disk. Is this loose?? The front can not be moved and are tight. Bolts seam to all be tight. Does this sound right??
Yeah, they "float". The fronts are probably tight because that's what you stopped with before last coming to a rest. If you ride up to a parking spot and stop using only the rear brakes, you'll find the rear tighter than it is right now. The fronts will still be tight because they're linked with the rear.
 

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All 1800 model bikes have floating calipers, and front discs are also "floating" rotors.

Floating rotors and/or calipers give the equipment room to expand during hard braking / heavy load braking. The rotor will expand when heating up.

Look at the fricton surface area portion of the front rotors on the 1800; it is a seperate piece that is mated to the rest of the rotor with a wide "washer". This washer has a slot in the center and the rotor slides within this grove. This gives the rotor room to grow as it gets hot / expands. The rear rotor is solid, but the caliper does float in the mounting pins.
 
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