Hey Doc
The proto did not use Tams fans, they were the turbax fans. I dont know if you watched the video of its maiden flight with the turbax setup but i believe they were running 11s setup. At the end of the video the batteries popped and it lost power. You can see in the video,when its coming opposite way of takeoff, it banks to the right before turning and coming back in for runway. It banked to the right when it lost power. It glided very nicely back around for a safe landing (except the nosegear stuck). After that it always flew on 9s setup and never had any problems with this setup. The plane feels like a tank with this setup but still flies great. I am thinking the dynamax setup will be a tad heavier like Ron was saying. Its like a never ending battle, bigger fan more thrust, more weight. Anything will fly with enough power but dropping the ratios down seems better to me.

As for the ducting, i will be making some inserts for Tams fan and the stumax fan for now on the inlet side. I will also need to figure out the exhaust side which will be a little more tricky. We will need to figure out the best diameter for the output on these fans. John rolled up some styrene and used it as the exhaused ducting on the turbax. I think he just went straight back with it, with no taper. The older inlet fits the turbax perfectly.

Yes, Tam was getting some fans set up for the A10. I called him today also, to see about some other things for the A10 but he was not in. I dont think he has picked his A10 up yet. I think he wanted it flying for E-jets. Busy guy.

chris