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Sep 06, 2020, 04:58 PM
You're killin' me Smalls
BrownEyedFool's Avatar
The parts bins have somewhere between 60 and 80 orphan motors in them, from quad packs to blue wonders to power 160s (yes I have issues). I have a few of the cf2812 motors mentioned in the first post, though not sure which kv version they all are. Have some suppo 2208s floating around, have old parkzone warbird motors, have a couple of the classic 2826 2200kv that I use on a lot of flying wings. Ecalc and I are old friends. Just not sure how much of a weight variance I’m looking at over the traditional build, likely to run the plane on 3s1300, and it’ll be used mostly for Rc night bowling and flying through hoops and gates and such.
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Sep 06, 2020, 05:10 PM
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dbacon's Avatar
Usually there is not much of a penalty to go big, so err on the horsepower side.
I think you might find a lot of those imbedded in the calc program.

The only issues are "Do you have enough?" Remember the rule of tools and toys:
"He who dies with the most - Wins!"
Sep 06, 2020, 05:40 PM
You're killin' me Smalls
BrownEyedFool's Avatar
Clean slate
Sep 08, 2020, 08:39 AM
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BrownEyedFool's Avatar
Coming together pretty quickly, lighting I have to keep reminding myself KISS principle, I tend to overdo the lights. Have a 3d printed motor mount I'll just drop on top of the motor stand and glue and pin in place. Haven't picked motor, prop or even which servos yet.

Also the big challenge is figuring a fast simple paint scheme that orients in day flying but doesn't obscure the lighting, first world problems.
Sep 12, 2020, 06:47 PM
You're killin' me Smalls
BrownEyedFool's Avatar
Going to be a bit heavy, since its built out of epp 66% thicker. Looks to be about 20 oz or so for a 24 snowball. So going up to a park 425 and a ten inch prop most likely
Sep 13, 2020, 11:17 PM
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BrownEyedFool's Avatar
Done. 20.4oz on a 24 span, but the motor and prop ecalc claims 30 oz thrust, so it should fly. Needs bond and test motor rotation but its generally done. Maiden tomorrow or next day. For me this was a fast build took a week, but there was a lot of precision work in the lighting.
Sep 14, 2020, 08:00 AM
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dbacon's Avatar
Doesn't sound all that heavy, in fact it looks very light! (LOL)
Great lighting job, I see what you mean about going nuts for lights, very impressive!

I made a 14" one of these, and I couldn't fly it, it was too wild, until my Son said "Slow it down dad", and it became docile and a delight to fly. So I offer that you should take off with as little power as possible, not full throttle like I always do on the first flight. Maybe that is why I never found work as a test pilot...
Sep 14, 2020, 09:57 AM
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BrownEyedFool's Avatar
The fun bit is the red on the leading edge does cylon patterns among others
Sep 14, 2020, 12:00 PM
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dbacon's Avatar
Your plane will end up on "Ancient Aliens" TV show!
Can you shoot a video of the "Cylon Eye"? It would be pretty impressive...

I estimate you have 1 Amp at 12 Volts for power to the LEDs, am I close?
Sep 23, 2020, 06:32 PM
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BrownEyedFool's Avatar
Flew terrible, best guess is the vertical cg is way too high, it rolled over on its back and went in consistently. Will probably tear off that heavy Park 425 and stick mount an emax cf2812 down lower, see if I can get it under control.

It was pretty durable until it landed just right and half snapped a float, blacking out half the LEDs in that side of that float.

I should be able to get a shot of the pattern soon, I don't youtube much though, I'll see what I can figure out. Here's the link for where I ordered the cylon https://www.amazon.com/EverBright-Fl.../dp/B0191IAUR4 it lists 0.55A
Oct 05, 2020, 08:11 AM
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BrownEyedFool's Avatar
Pulled the printed motor mount off last night, going to cut in a stick mount and put a CF2812 on it. going from a 70g motor to a 39g motor and dropping it an inch should help with vertical CG.

Was fun getting the mount off without tearing things apart, I had overengineered the glue joint, drilling through the mount into the foam and gluing 5 short skewers into the holes to pin it in place. So of course after doing ti that well I had to undo it.

Anyone have opinion on thrust angle? I can keep it where it is with the front edge of the foam block vertical, or cut the front face back a bit to give some up thrust. Could use some input on that
Last edited by BrownEyedFool; Oct 05, 2020 at 08:26 AM.
Oct 08, 2020, 08:54 AM
You're killin' me Smalls
BrownEyedFool's Avatar
Took off the printed mount, cut the 3-5 degree thrust mod on the front of the block, switched the 70g motor to a 39g motor, switched from a heavier graphene lipo to one of my older glaciers, dropped at least 2.5 oz from AUW down to 17.4.

Well see if it flies better now,
Oct 09, 2020, 02:30 AM
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dbacon's Avatar
Sounds like a big improvement!
Oct 11, 2020, 08:31 PM
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BrownEyedFool's Avatar
Flew pretty well, needed more nose weight and I forgot the apc 7x6 So it was on a 7x5. Will likely cut the battery slot wider forward so I can slide the pack forward and improve cg so I can remove the small nose weight. Should have had a couple flights in daylight in wide open space before I tried flying it in a constrained location
Oct 13, 2020, 11:13 AM
Scratch building addict
rotagen's Avatar
Has anyone built a Nutball as a Flying Car?
When I saw ATV on the title I thought someone came up with my same idea.

The nutball with its great slow-speed characteristics and shape would be the perfect frame for a car plane I think.

Here's my idea, go with a large central wheel a good 8 inches in diameter and just use 2 small wheels or skid plates on the outsides. Make it as a pusher with motor above the plane in back. Enlarge the rudder surface to get airboat style steering with air flow across the rudder.

Perfect vehicle to terrorize my chickens in the yard.


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