Bryan & Nick
Thanks for that information. I think I am going ahead with 2 x MFA 50:1 motors on 6volts to start with. I will be using one of those amazing P94 contraptions that a certain member of the forum sells ( and another member designed) :)
I have the whole centre section removable, plus the area over the motors and under the funnels as per Dave Metcalfe's original, so plenty of access. I also have 2 x 6volt 7Ah batteries from a UPS which should give plenty of run time, and help the ballast.
When I originally thought about building this, a couple of years ago, I tried to find the ABS hull originally available from MB, but of course, that was when they were in handover, and the plans service didn't seem to be functioning, so I scratch built the hull. Last night I was looking at the MB plans web site, and what do I find, the Lulonga plastic hull >:(
Barrie