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Old Feb 10, 2012, 10:37 PM
Gaui X3, Nano CPX (two)
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United States, MO, KC
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Discussion
What is the best weight for a 32" 3D plane

with a 2712-12 motor ("blue wonder")
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Old Feb 10, 2012, 11:41 PM
Slopeosapien
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Best I've ever built (Leadfeather Yak-55) came in at about 7 1/2 oz (w/370 3 cell nanotech) when I maidened it... It's definitely more now after all the repairs lol!
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Old Feb 10, 2012, 11:58 PM
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United States, CT, New London
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The best weight is the lowest you can get generally. Small 3D foamies fly much better when light, especially in tight spaces. My 32" Yak-55 weighs 5.5 oz with a blue wonder and feels just light enough fly in a smaller gym, with plenty of vertical power (2 cell 400mah). Anything above 6oz just doesn't feel good to me with a 32" foamy.
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Old Feb 11, 2012, 01:29 AM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
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my idea is the Blue wonder with a 10A ESC, 2s 450mAh Li-Po pack, 10x6DD prop (tried on 2s with this motor, works great with great power) and orange RX with no case. The plane will be a FancyFoam/Leadfeather Yak-55, or a FancyFoam Freestyle.
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Old Feb 11, 2012, 11:17 AM
Lost but making good time
Joined Nov 2008
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kpilot,

Sounds like a great idea as long as the 10' prop doesn't pull to many amps...when you get it airborne, fly it like a helicopter for a minute and then check the temp on the esc and motor windings just to be safe. Have fun!

Regards,

Hankg
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Old Feb 11, 2012, 11:32 AM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
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Quote:
Originally Posted by hankg View Post
kpilot,

Sounds like a great idea as long as the 10' prop doesn't pull to many amps...when you get it airborne, fly it like a helicopter for a minute and then check the temp on the esc and motor windings just to be safe. Have fun!

Regards,

Hankg
It is a 2712-12 motor, 1300kV. A 10" prop pulls 6.5A on a 2s Li-Po and thats around 3.5A less than the max. rating. I have flown it a LITTLE on 2s with that prop until the ESC started cutting out with it too. (replacing the ESC now) It works just fine with that. It just doesn't have as much vertical power as it does on 3s with a 9x5. But with 2s and a Giant 10x6 DD prop, it is SO stable in hover! (unlike with a 1500kV motor and 8x4, not NEARLY as stable hovering)




Here is a link to the motor:

http://www.headsuprc.com/servlet/the...ushless/Detail

Thanks again!
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Old Feb 11, 2012, 12:01 PM
Lost but making good time
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kpilot,

It's amazing that a motor that size can put out the power that it does! I have a leadfeather Yak, Edge, superSlo 28, and Sukhoi 31 powered with that little motor. Definitely a one of a kind.

Regards,

Hankg
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Old Feb 11, 2012, 12:54 PM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
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Quote:
Originally Posted by hankg View Post
kpilot,

It's amazing that a motor that size can put out the power that it does! I have a leadfeather Yak, Edge, superSlo 28, and Sukhoi 31 powered with that little motor. Definitely a one of a kind.

Regards,

Hankg
Yes it is an amazing motor, perfect for 3D foamies weighing 6-12oz.!
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Old Feb 12, 2012, 10:23 AM
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United States, CT, New London
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I actually much prefer the 1500kv version running an 8043 slofly prop. The throttle response is far better than the 1300kv with a 10x6, and torque reaction is minimized. Even with the 8x4 it is very easy to hover. But, anything over 6oz will feel underpowered with this setup.
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Old Feb 12, 2012, 01:59 PM
Gaui X3, Nano CPX (two)
BladeScraper's Avatar
United States, MO, KC
Joined Jun 2011
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Quote:
Originally Posted by kswaid View Post
I actually much prefer the 1500kv version running an 8043 slofly prop. The throttle response is far better than the 1300kv with a 10x6, and torque reaction is minimized. Even with the 8x4 it is very easy to hover. But, anything over 6oz will feel underpowered with this setup.
lol, that may be why! i had a 1500kV on it with 1 8x4.3 slofly and a 3s and my foamie weighed 9oz :/ LOL
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