Another Rupes Question :( Pretty sure it hasn't been asked yet. ;-D

[bedut]

On most da's such as the PC,Griots and Meguiars the bp's are interchangeable. This is not true with the gear driven Flex (forced rotation ) and the Rupes 21 and 15 which are not forced rotation and have special made bp's propitiatory to Rupes..The washer mod on a Rupes consist of adding a washer between the bp and machine spindle. A flat washer must be modified by matching it to the Rupes bp.So no the washer on your other bp's will not fit.

I just got a nylon washer, that was small enough in diameter to fit inside the backing plate, instead of modifying a larger one. Seems to work just fine!

thanks Guys, also to another forum member who sent me PM regarding this issue... :xyxthumbs:

now I'm confident to go with 21ES + 5" Rupes BP combo