Disk brake clearance from drive sprocket

Timbone

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Goal: to run 160mm disk brakes front and rear, with the rear disk sitting just to the left of the motor drive sprocket (36 teeth) on 24" wheels.

What is the minimum clearance from brake sprocket to motor drive sprocket?

What are the disk brake rotor standards: number of holes? Diameter of the holes from the center point of the axle? And distance from hole screw hole to screw hole?

Thanks in advance. I may fashion my own adapters.

=Timbone=
 
The minimum clearance depends on your choice of chain size and your choice of brake caliper as these can be different thicknesses.

The six hole rotor BCD is 44mm, so 22mm radius, and a central hole of the rotor is 33-to-34mm.
 
Start with where the sprocket HAS to be to be aligned on the bike, wrap a chain on the sprocket, put disk in caliper and pinch the brake on the disk, hold it up to the sprocket just to its a got a tiny clearance from it, and get a measurement of what needs to be between the disk and it's mounting holes.
 
Start with where the sprocket HAS to be to be aligned on the bike, wrap a chain on the sprocket, put disk in caliper and pinch the brake on the disk, hold it up to the sprocket just to its a got a tiny clearance from it, and get a measurement of what needs to be between the disk and it's mounting holes.

Good advice! Thanks!
 
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