hmm, didnt know that, it (the forum) was changed recently as general public was able to post without joining up, which led to some "suspect" posts,
maybe I should do the build blog on mayhem,
in summary, we have opted for twin screw, brushless (I have the smaller 3 footer on single screw), the shafts are removed from the motors, and the M5 propshafts go straight through the motors eliminating any belts, gears, couplings etc, the ultimate direct drive!
It runs on two seperate systems, meaning each motor has its own esc, and each motor has 2 x 2 cell 5000mah lipo, not tried nimhs yet, each motor has a water cooling plate, which exit through both exhausts.
We have had eagle tree data logging on it, it does 22mph, didnt want it as fast as the huntsman, its far more efficient which has encouraged me to change the Huntsman to twin screw next year, as its well over due a refurb, in the same way.
As usual with me, its over the top! We did some testing with various size props, from X45 to X55, X52.5 being best overall performance, speed/amp draw/run time, today went to Haydock show and had a long talk with Simon from propshop, two cleaver props are ordered, and will be counter rotating.
Currently doing fittings and paint, hopefully finished in next few weeks!
I would not hesitate now to do twin screw, this is my first attempt at it, the only problem is you have to buy two of everything!, any questions, just ask!
First water test, rudder throw was none existant, so had to take it easy!
http://www.youtube.com/watch?v=W1FShc3Mvuk&feature=relmfuPaul