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Old Jan 03, 2013, 10:31 AM
PowerTower
RWData's Avatar
United Kingdom, England, Bristol
Joined Aug 2009
1,057 Posts
You can check using a wattmeter, tells you the power (watts), amps draw, battery voltage, useful to ensure you are not stressing the ESC (or motor). I would go for 8x3.8 or 8x4 prop. Mine is 7x6 on 1800kv motor with 3s 1300mah 25c lipo, runs very well
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Old Jan 03, 2013, 12:08 PM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
4,037 Posts
I'd go for a 7x4 prop for the maiden and a 3s lipo between 800-1300. The 2200 lipo will be too heavy and will hurt performance. As always, check that the c of g is as per the plan but err on the side of a little nose heavy especially if it's a bit windy. Once you have a wattmeter you can experiment with different prop sizes.
Here is a decent Wattmeter from HK's UK outlet http://www.hobbyking.com/hobbyking/s...arehouse_.html. It can measure live amp draw and tell you how much % capacity if left in the pack after your flight. This latter function allows you to set your timer to give a safety margin for a few landing approaches. Or you could try this one from Giant Shark http://www.giantshark.co.uk/gtpower-...-p-407556.html
Andy
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Old Jan 06, 2013, 06:58 AM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
4,037 Posts
Here's my latest 600mm wingspan build. 6mm depron with 3mm depron KFm-4 panels. Rear fins smaller than plan but still tracks like it's on rails. A bit under-propped for the maiden. Motor is the MicroDAN 2535 kv that can take 4s so will be capable of a bit more speed if I want.
Funbat flying wing on MicroDAN 2535 kv motor (2 min 15 sec)

Andy
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Old Jan 06, 2013, 10:17 AM
Registered User
United States, IN, Greenwood
Joined Oct 2011
59 Posts
That's a very nice looking Funbat, Headless.
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Old Jan 15, 2013, 11:44 PM
Pushing the envelope
Nicoflyer's Avatar
Valatie, N.Y.
Joined Jan 2006
408 Posts
Getting some work in on my new FunBat V 2.0. I reduced the plans to 20" WS,from the 28" standard and my 16" micro. I elongated the fuse in the nose to help with CG, because of the slightly longer tail and soon to be working rudders.
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Old Jan 15, 2013, 11:45 PM
Must not buy more planes!
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USA, KS, Wichita
Joined Jul 2010
2,300 Posts
Sweet. Let us know how it flies.
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Old Jan 16, 2013, 01:00 AM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
4,037 Posts
Nice paint job Nico and I like the canopy. What power set up are you planning to use?
Andy
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Old Jan 16, 2013, 06:21 AM
Pushing the envelope
Nicoflyer's Avatar
Valatie, N.Y.
Joined Jan 2006
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Quote:
Originally Posted by headlessagain View Post
Nice paint job Nico and I like the canopy. What power set up are you planning to use?
Andy
To start I'm going with a 12 gram MicroDan 1800kv on 2s spinning a 6X3 prop, but that may change. I'll keep you posted with info and videos,
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Old Jan 16, 2013, 12:31 PM
Reap the wild wind
headlessagain's Avatar
Bristol,UK
Joined Feb 2007
4,037 Posts
Hum, I might have to build another tiddler with maybe a Blue Wonder 3000 kv, 4.75 x 4.75 prop on a 3S 800 pack.
Looking forward to flight video
Andy
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Old Jan 20, 2013, 10:01 AM
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Nicoflyer's Avatar
Valatie, N.Y.
Joined Jan 2006
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Ready for maiden today, it will be indoors.
Fun bat mini (0 min 14 sec)

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Some comparison numbers, Um Stryker: WS 17", auw w/ 200 2s, E-Flite 180 is 2.55oz. FunBat: 20" WS, auw w 360 2s, E-Flite 250 is 2.80oz. The FunBat is ~20% bigger in all aspects and less than 10% heavier.
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Old Jan 20, 2013, 02:55 PM
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Nicoflyer's Avatar
Valatie, N.Y.
Joined Jan 2006
408 Posts
It flys great! Not the best video, it's shot thru my I-phone
FunBat maiden (1 min 41 sec)
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Old Jan 20, 2013, 04:14 PM
Must not buy more planes!
mclarkson's Avatar
USA, KS, Wichita
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Nice. Looks really light.
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Old Jan 20, 2013, 05:31 PM
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Nicoflyer's Avatar
Valatie, N.Y.
Joined Jan 2006
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Yes it is light, by the end of the day I was getting some knife flight and it has 3d capabilty. The rudders are a great addition to this airfarame. I'll bring a real video camera next Sunday for some better footage.
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Old Jan 20, 2013, 06:25 PM
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United States, OH, Eaton
Joined May 2006
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Quote:
Originally Posted by Nicoflyer View Post
Yes it is light, by the end of the day I was getting some knife flight and it has 3d capabilty. The rudders are a great addition to this airfarame. I'll bring a real video camera next Sunday for some better footage.
Nice plane. Looks fast enough to be fun but slow enough to manage indoors.

Just wondering - is it possible to shoot video with an iphone as widescreen rather than tall/narrow screen? I've seen this alot lately.
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Old Jan 20, 2013, 07:32 PM
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Nicoflyer's Avatar
Valatie, N.Y.
Joined Jan 2006
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Quote:
Originally Posted by chris1379 View Post
Nice plane. Looks fast enough to be fun but slow enough to manage indoors.

Just wondering - is it possible to shoot video with an iphone as widescreen rather than tall/narrow screen? I've seen this alot lately.
Yes it is and it's much better when held on its side(wide screen) but I let a friend video it and that's how he shot it.
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