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Old Sep 14, 2006, 02:02 PM
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Speed Stick 3D's Avatar
Las Vegas Nv, USA
Joined Oct 2005
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Help! 28 oz of thrust with 14 oz 3D airplane?

i just finished building a cermark sammy 3D and when finished is going to weigh about 14 to 15 oz's it is a 3D airplane so i wanted to know if 28 oz's of thrust would be enough for it??????

here is a link to the motor that i just ordered and willl post pics of the plane later today......

http://www.graysonhobby.com/catalog/...products_id=57

Thanks for looking
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Old Sep 14, 2006, 02:23 PM
Supra!!!!!!
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Las Vegas Nv, USA
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pictures

here are the pics
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Old Sep 14, 2006, 02:30 PM
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Dr Kiwi's Avatar
Chattanooga, Tennessee, United States
Joined May 2003
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2:1 seems more than enough to me! I believe ~1.4:1 is said to be the minimum for hovering.

That said - I believe their estimate of 800g (28oz) is seriously optimistic.

Our calculator suggests 665g/23.5oz for a 9x4.7 APC SF at 8421 rpm.

http://www.gobrushless.com/testing/t...=Calculate+Now
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Old Sep 14, 2006, 02:32 PM
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Las Vegas Nv, USA
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thanks for your help
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