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Old Jul 02, 2015, 09:40 PM
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CMP tigermoth

I am planning to purchase a tiggy and the CMP model sold by nitroplanes is very interesting. The kit version is still available and I have the salvaged electronics from a crashed Hobbyzone Corsair S with SAFE that I would like to use. The electronic parts are as follows:

480 brushless outrunner motor 960Kv
30 amp pro switch mode BEC brushless ESC
4 parkzone servos
Transmitter and receiver w/ SAFE

Will these parts work in this model?
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Old Jul 03, 2015, 03:28 PM
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I am not going to present myself as an expert. But I would think this motor is a bit small for the Tiger Moth. Nitroplanes says the plane weighs 4-5 lbs. I don't think a 480 size will fly a plane that weight. I would think a 480 would max out at about 2lbs (800-900 grams). Also, biplanes tend to be "draggy" because of the two wings. So a bit more power would seem advisable. Nitroplanes lists the plane as a "35 size". So I would think you should probably look at a motor in that size range to power the TM. The Safe receiver should be fine in the TM. I don't know what the torque on the servos from the Corsair are rated at. But I would hazard a guess that they are also a bit small for the CMP Moth.

Mark
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Old Jul 03, 2015, 03:42 PM
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Thank you for the info. What size servos would you suggest? Also what would be the best quality motor for the job?
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Old Jul 03, 2015, 05:13 PM
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I would think you might look at something like a Hitec 225 for rudder and elevator, or something even slightly more powerful. Perhaps even a "standard" size servo, which has about 40 oz/in of torque.

Motor quality is a matter of opinion. If I consider the project worthy of a good motor, I look at Scorpion motors. I've also used Cobra motors, which I consider to be a decent quality motor. And I've also used inexpensive motors from a variety of vendors (Hobbyking, HeadsupRC, Suppo motors from Altitude Hobby, etc.). For a plane this size/weight, I would think you would want to look for 400-600 watts for good performance. Easy enough to throttle back if you find the model to be overpowered.

Mark
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Old Jul 03, 2015, 06:15 PM
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Thank you again for the information.

I have not found a review or post comparing this balsa model with a foam model like the Dynam Tiggy. I wonder how their flying characteristics would compare with each other?
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Last edited by 8416w; Jul 03, 2015 at 06:16 PM. Reason: added flying characteristics
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Old Jul 03, 2015, 06:36 PM
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I don't think I can help with a comparison, having never flown either model. I do look at wing loading when considering a model. Generally, the lower the wing loading, the slower the model will fly. There is also a "cube loading" calculation that experts say provides a more useful comparison between models. A search here should turn up how to compute it and utilize it in a comparison of models. Good luck!

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