[Veselin Kolev]

Last year my team used two FP motors bolted on either side of a spool for an elevator system. All we did to mount the spool to the FP was: we took out the final gears from the gearbox (the ones with the wierd hubs), cut the hubs off, drilled holes in the gear, and bolted the gears to the spool itself. Then we put the gearboxes back together around the spool, and it worked quite fine.

The main concern with mounting stuff to the outputs of the FP gearbox is that the output hubs are plastic. Some teams have done the bolt-on method, some teams make hubs that will fit over the other ones.

Hope that helps.