I just came up with a good idea. I have been searching for a low cost planetary
drive for a 1/2 or 1/4 scale model VTOL for proof of concept. I found it. All truck engine starters are planetary. 8Kw is about 10 HP. Truck junkyard is the
place to go.

Paul Lamar

Smashing Paul!! Any idea on an approximate ratio?

I've got another application that I could use on of these on..
On my Cnc the spindle turns up to 18kpm..  I'd like to be able
to cut steel but need to slow it down between 5 or  8 :1
It'd still need a spindle [bearings etc] on the bottom end but this would take
care of the reduction!

I'll have to do some more research!

Jarrett

My guess is close to 3:1

Paul Lamar