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Sev Fontaine
08-17-2006, 11:22 PM
Well... I maidened the XPD-8 tonight. Needless to say... I'm more than dissapointed with the stock setup.
442
I wasn't expecting a missile.... but I was hoping to be able to hand launch this thing.
Before the maiden I checked the CG and control throws. My setup is the stock DF with ball bearing brushed 370 motor. 25 amp speed controller, electron 6 receiver and a 3s1p Thunder power 1320.
The maiden went ok. There was a little bit of wind and that helped with the hand launch. I threw it pretty hard and still only managed to miss the ground by about 6 inches. I flew for most of the battery pack and performed a pretty decent landing. I recharged the batteries and tried again but by this time the wind had died down. I attempted a hand launch exactly the same as the one before but the plane just didn't have enough thrust to climb. I ended up breaking one of the wing tip stabilizers so I went home and fixed it with some foam safe ca. Walked to the field... and the same thing happened again. So by that time I was pretty dissapointed. I figure i'll try and build a simple rail launch system or only fly it when there is some wind to help with the hand launch.

cgroves
08-18-2006, 09:04 AM
25AMP SPEED CONTROLLER, YOU CAN'T FLY A JET ON 25AMPS!?!?:D

How many mm is the fan? We could cook up a better power system for you.

Sev Fontaine
08-18-2006, 10:26 PM
I'll have to confirm but I think the fan unit is 56mm. The fan manufacturer said that it could handle 50k rpm but that the stock motor only spun it at 28k. I'd like to run a brushless setup in the near future. The fan unit is capable of taking both 20 and 24mm diameter brushless motors. Any recommendations?

MikeZufelt
08-25-2006, 10:52 PM
I'd have to check the size but I think the best "RPM" brushless motor in those sizes is from the Ultrafly brand. Not sure the exact model name but it comes in two flavours and wrapped in a graphite case and nice box. I know a few guys using them on pusher jets and I believe one guy tried it in the same kit you have.

It screams(no actual specs though for top mph)...