@ Geoff: thank you

Back to the model, I made a mistake something with the weight of the aluminum disk, so today I made a 4mm thick steel plate.
Incidentally, the rectangular opening is milled because of the lift / lower Servo.




The disk has a significantly higher weight, because I'm going to try and test a little
what the rotary engine has to say.
I could very well imagine that is annoyed Tamiya TigerI & II drivers could use as a counterweight good because it sits the weight of the tower really central and deeper.

When I tested it continues here ......
Regards,Guido
