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Forward looking video camera

Old 01-26-2007, 07:39 PM
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Sparky Paul
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Default Forward looking video camera

Looking along the line of flight with a Mustek video camera.. this is NOT recommended!
But notice how well the prop brake works!
http://www.rcgroups.com/forums/showt...87#post6805024
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Old 01-26-2007, 07:51 PM
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heh, that's pretty bad. I wonder how long until somebody rigs up a cam to work in concert with the propeller so that its staggering its frames and does not take a frame when the prop is in front of it, similar to how WWI era machine guns shot through the prop's circle without blowing the propeller up.
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Old 01-26-2007, 08:50 PM
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There's 9 prop blades in this image where the motor is running fastest..
That's 4-1/2 revolutions in 1/30th of a second.
It'd take a really good interrupter to get around that..
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Old 01-26-2007, 09:09 PM
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The camera has good color though! Hee Hee!
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Old 01-26-2007, 10:31 PM
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I'd like to use a hard brake so I dont hear that windmilling when I power off in my videos, but it would wreck my gearbox..so I live with it or get another motor....

nobody likes gearboxes anyways!
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Old 01-27-2007, 12:13 AM
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That's an Eflite Outrunner 450. With an APC 10x3.8 and 3 cells, it has more than enough poop for the plane.
I put the camera in another one and flew it at the same place..
It shows the camera really oughta be looking down about 1/4 the vertical field of view to get more interesting stuff than just plain sky.. and the autoexposure works better when looking more at ground than sky.
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Old 01-27-2007, 01:09 AM
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Sparky,

You should enter some pics of your planes for the WF calendar. You seem to have alot of nice ground and air shots.
http://www.wattflyer.com/forums/showthread.php?t=14885

besides, there isnt too many AP planes in there so far!

Dave
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Old 01-27-2007, 02:30 AM
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TeslaWinger
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Originally Posted by JWilliams View Post
heh, that's pretty bad. I wonder how long until somebody rigs up a cam to work in concert with the propeller so that its staggering its frames and does not take a frame when the prop is in front of it, similar to how WWI era machine guns shot through the prop's circle without blowing the propeller up.
With video having 30 frames per second it could take a frame with a high speed shutter, wait a few hundred RPM and take the next but the tach interface and computer software would be a real fun programming project- for somebody else! Still wouldn't be able to lower the horizon angle without filling the frame with nose! Twins and pushers are easier- just nose mount them!

That's why I made a pod for my camera- but it would have to be very tall to get a low enough angle to keep the sky at the top quarter of the frame so it will expose for the ground better, yet still keep the nose outta the frame.
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Old 01-27-2007, 04:59 PM
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Pushers or twins will keep the prop out of the field of view without having to go to extreme configurations.
With the skinny video cameras, a plane could be built with a slimmish fuselage holding the camera looking forward, and it could fit one of the usual flat box type looking to the side, without the fuselage needing to be too wide when side looking is preferred..
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Old 01-29-2007, 04:49 AM
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The pusher plane, glider body, GL wing... then with the motor above the wing, tractor style,..
Kinda tippy nose wise taking off dirt..
Eflite 400, 9x4.7, 3C1100
Tonight it became a twin..
2x370 brushed, 6:1 gear, 11x4.7, 8x1000 ..
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Old 01-29-2007, 05:19 AM
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The "Gentle Lady" was my very first sailplane - someone goaded me into building one to prove I could really "find and use" thermals, as I insisted I could with (at that time) several of my gassers.
Man, I loved that plane (glider). Where I live is a HUGE hill right in the middle of our local public swimming pool's park - it's about 150 feet high, just a BIG dome of dirt covered with grass.
When I wasn't using a hi-start, the Gentle Lady could do a passable job of slope-soaring using the generated by that hill.
Those were the days! You're giving me the urge to get another Gentle Lady and electrifly it.
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Old 01-30-2007, 01:34 AM
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Combined 3 videos.. one with the camera looking thru the prop, the second with the camera ahead of the prop, but looking straight ahead.. and the third with the camera ahead of the prop looking down about 15 degrees.
This keeps the bright sky from underexposing the detail on the ground.
http://www.rcgroups.com/forums/showthread.php?t=634361
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