[MT-ALES] U2 Super Strong weigh in

[Carl A Thuesen]

I agree the prop seems large.  The plane was built by Lenny Keer, who is very knowlegible and uses lots of Neu motors.  eCalc showing 45 amps and 500+ watts if I picked the right motor from the list.  There’s about a jillion Neu motors listed! The watts are on the high side for this motor.  The plan is probably not to go full bore the whole 30 seconds?  Think I have a GM 15x8 in the box that I could run initially and see what the Castle reports for amps & watts.

CT


On Apr 17, 2020, at 7:57 PM, CURTIS SUTER via MT-ALES <mt-ales at lists.webworks.net> wrote:

Looks awesome!
 Seems like a huge prop for a 4s setup.
What’s the amp draw?  I estimate 200m in 14 seconds.

Curtis

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On Apr 17, 2020, at 19:51, Carl Thuesen via MT-ALES <mt-ales at lists.webworks.net> wrote:

 Today I assembled the used Ultima 2 Super Strong that I bought used from John Hsu in Colorado.  I wanted to check its weight and CG.  Looks like it’ll be right at 56 ounces ready to fly, with acceptable CG.  John furnished 3 sticks of ballast at 5 ounces each.  Adding ballast will shift CG forward a little.  John had used a 4S power setup, so I followed suit with some 4S 850ma Venom Drone batteries.  It has a Neu 1105 geared motor and a 16x10 GM prop mounted.  My first venture into 4S power in a glider.  eCalc estimates climb rate of just under 14 m/s.  Yikes!!!

Stay safe and hang in there everyone!

Carl

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