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Old Oct 02, 2011, 01:33 PM
Julez is offline
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Proud to eat Kraut ;-)
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Germany
Joined Dec 2003
5,609 Posts
New Version

Hi!

Meanwhile, I had finished the plane, but it did not fly too well. It was rather havy.
So, I decided to disassemble the above version and to build everything new.
The new version, weighs 500g less, and offers other benefits as well. I installed a selfwound Scorpion motor, this time in pull configuration. It produces far less noise now.
The flight caracteristics are excellent, just the way the glow version is.
It pulls 37A on a 4s A123 pack, and gives 10min flight time before my Jeti telemetry warns me when 1750mAh are used up.
6-7m or runway are needed for a start, and the climb rate is pretty good.
So is the maneuverability, as long as the motor runs. When gliding, rudder reaction leaves something to be desired, but that is not a big problem, once one gets used to it. I could handle the plane and the camera simultaneously.
The CG position is rather unproblematic, it flies equally well with a 3s 2200mAh LiPo pack, which is half the weight. So, with 2 of those or a 4000mAh pack, one could double the flight time. I think I will do this in the future as well.

I will make a hood for all the electronics and the battery, and a new sail, too. The old spinnaker one is rather worn out, and the new one will be made from "Contender Sailcloth". This is an exellent material.
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Last edited by Julez; May 06, 2012 at 04:04 AM.
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