Originally Posted by
Roelof
Limiting the FDR with no tools for a fast check than only by looking at the numbers on the gears and a list of the internal ratio's is asking to be fooled. Indeed using diffs or pulleys from other brands (or in the case of hudy probably special made) will change the internal ratio.
Currently being developed, and used here in Australia, a simple FDR checker, that plugs into the motors sensor port, and measures the FDR.
If the pulley's are changed, it will detect the change in FDR.
https://www.youtube.com/watch?v=YSUOI7ikzdk