I'm building a rear wheel (my first wheel-build) that needs a 4mm dish.
How much will this amount of dish weaken the wheel?
What would be the maximum dish a wheel can have while still maintaining good strength?
Old and used double walled rim;
Rim outer diameter: 635mm
Rim inner diameter: 585.1mm
Rim width (measured with calipers): 24.4mm
Spoke count: 36 normal spokes
Coaster brake hub;
Hub diameter (measured between 2 opposite spoke holes): 49.1mm
Flange to flange distance: 50mm
By 4mm I mean dishing the wheel such that the rim moves 4mm to the left relative to the frame center line (or relative to its non-dished position). I need this because I took away 4mm worth of spacers from the drive side, and added them to the non-drive side -- effectively moving the rim+hub 4mm to the right relative to the frame center line (or relative to the drop outs).
If measured with the dishing tool (after spacer readjustment), there would be an 8mm distance between the tool point and the locknut of the non-dished wheel.