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heres the second flight with the DW raven with VPP
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Another motor post
OK, so I got the Motrofly 2610 and a BP2217-8 to test against the awesome but noisy and short lived* Sonic Electric unit. I snap-shotted the test bench results in the picts and it looks interesting. I suppose I should get the Dynamo and a Cobra in there as well. All testing was done at a constant voltage using a single 10 x 4.7 APCsf prop.
All three of these motors work great and will fly the 40" planes really well. The Motrofly would also likely be excellent on a 48". The BPHobbies unit gives the most bang for the buck and it is the lightest one here. With the 10x4.7 it will run on the warm side but these motors (which look very much like the Dynamo units) have a reputaion for being very durable. *The Sonic lives again! I had to machine an oversized shaft to get the bell wobble to go away and I added some higher precision bearings. We'll see how long it stays quiet... Cheers - Mark |
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Latest blog entry: TESTING! 9x6 Props for Penguin
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The Motrofly is by far the better motor. These motors are all hand wound (picture) and have oversized shafts (5mm!) and bearings. Also, the larger diameter provides for an improved coefficient of torque (Kt) which means less current (more efficient). They really are a fine piece of work! (and yes, a little pricey).
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Latest blog entry: TESTING! 9x6 Props for Penguin
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United States, GA, Newnan
Joined Aug 2010
1,042 Posts
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DWF and VPP / 4D
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Santiago- awesome, dude. Yesterday, before I saw your vid, I was looking at this:
I got totally smitten w/ the thought of 4D. So I'll ask you guys, and maybe need to ask Mike Morgan...what about it? Anybody ('sides Santiago) stuck a VPP on the nose of a DWF?? |
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Absolutely awesome flying and technology, love it.
But man this goes against the grain of safety, flying over peoples heads is a big risk. I know and you know we all feel these are pretty safe but man one glitch in the radio, and take the little girl that reached out to it..... You get my point. MIke R Quote:
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Quote:
![]() I just honestly didn't know how to analyze the workbench data. |
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United States, GA, Newnan
Joined Aug 2010
1,042 Posts
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I agree, that is some wicked cool stuff!! I wonder about the reliability of it though?
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