Help! 28 oz of thrust with 14 oz 3D airplane? - RC Groups
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Sep 14, 2006, 02:02 PM
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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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Sep 14, 2006, 02:23 PM
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pictures


here are the pics
Sep 14, 2006, 02:30 PM
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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
Sep 14, 2006, 02:32 PM
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thanks for your help


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