stunthanger.com
Electric Stunt => Gettin all AMP'ed up! => Topic started by: GGhisleri on June 12, 2011, 03:27:52 AM
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I have already posted some questions in another section of this forum.
I'm building a Gieseke Nobler from Top Flite plans, I don't know if I will ever fly it, as 40 years have gone since the last time I flew a UC stunter.
However is my intenction to make it flyable.
Its finished weight, as stated on plans, should be approx. 38-42 oz.
How many Watts should have the motors ?
How many Kv ?
Battery ?
Propeller ?
Thanks in advance.
Beppe
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All of this is a pure guess. Maybe others will chime in and help.
Motor something like a AXI 2820/12 or maybe a 2820/14
Battery hopefully 4cell 2600 will make it through a full pattern
Prop APC 11 x 5.5 pusher
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Cere Giuseppe,
If you achieve a weight of 42 ounces ready-to-fly, then you will consume approximately 1.8 or
1.9 Amp-hours of battery capacity from a 4S battery, in order to fly the schedule.
The Battery capscity should be approximately 2500 mAH, which offers several options from 2200 ~ 2600.
The 2200 mAH battery will be lighter and will be adequate if the overall package weighs less than under 40 ounces.
The average in-flight power will be between 200 and 250 Watts, and the momentary peak powers maybe 30% higher.
The motor will be similar to the E-Flite Power-10, weighing approximately 4-1/2 ounces with a Kv between 900 and 1200.
The Power-10 has a Kv of 1100.
The motor weight between 10% and 12% of the all-up weight assures the ability to handle the necessary power.
This combination will turn a propeller between 11-1/2 and 12 inches in diameter ...
probably an 11.5 X 4.5 or 12 X 6 electric pusher for the benefits of the reverse rotation.
Have you read enough on the forum to see the larger picture yet?
The preferred setup uses constatnt RPM governed operation, with the constant operation being provided by either the
ESC or a special timer-controller.
Please check the "List Your Setup" sticky thread above, with an eye toward airplanes that also weigh approximately 40 ounces.
There is much reading there, but I think you will find it helpful.
Regards,
Dean Pappas
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Many thanks Dean.
I'm not new to electric flight being an RC modeler from 1969.
I'll follow your suggestion and read the thread.
I've been a Flying Models subscriber for a long time and have ever wondered how you could find new argument for your long lasting Pattern columns with every new issue.
I've been a contributor too, in 1992 Bob Hunt who was editor then, published a model of mine: an RC version of Junar by Bill Werwage called BW Special.
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I remember that article on the RC converted junar..
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You're a young modeller too......... H^^
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I was 13 in 1992 ;)
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I was 13 in 1992 ;)
You lucky guy, I have a daughter who was born in 1974..........and two nephiews 5 and 2. D>K