Hello my Lords
Jan's buffer is currently in my small yard. The smoke has been improved. I've installed two 12V PC fan, one was throttled to 6V for a replica, model without driving. The other fan is an electonic components - a bridge - from the drive motor supply depends on the speed with power. The function is given in forward and reverse. Accordance to increase the speed or the low protective smoke emissions.
Here are a few pictures, as I have solved it:
Full Throttle
Full throttle to stop machine
Here's a little test video in our small garden pond unfortunately
Pressed gently ==>
http://www.youtube.com/watch?v=qWP-MdQy0IYRegards, Willy