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View Full Version : New 450 AP rig test shots


cudaboy_71
12-11-2007, 10:26 AM
hey all. i decided to give the AP thing go. i wanted something i could fly at the park and a little around my house, so i went with the 450 size. i did a little web research plus added some of my own ideas, dug around in the closet for some items i might already have, and here's what i've come up with:

in the air:
stock trex 450 (rotorworkz g4 frame) on AR6200 Rx (my daily flyer)
askman 450 AP mount with damping shocks and tilt
electron6 Rx for tilt/shutter control (spare sitting on shelf)
emprex 7mp point and shoot (fry's for $70)
dimension engineering's pico switch (relay for the shutter)
HS55 tilt servo (spare sitting on shelf)
TX-9500 900mhz video downlink transmitter 12VDC (powered directly by 3s lipo from trex)
hobbywing BEC (power to servo/picoswitch--spare sitting on shelf)

on the ground:
JR 9303X controlling the heli
JRXP9303 (72mhz) controlling the tilt/shutter (spare sitting on shelf)
RX-910 900mhz video downlink receiver
road theater LCD (headrest DVD player)
12VDC SLA battery for power to RX/video screen (spare sitting on shelf)

as far as the setup, the only thing i'd like to change is to some longer blades. but, i didnt have any on the shelf. the 325s got it off the ground fine though.

i wanted to keep my 450 available for regular flight, and my rotorworkz frame looked like it would be the simplest for just creating a strap-on AP rig. it works pretty well just using 4 tie wraps at the corners of the skids to the AP frame. it's a little bit tail heavy. i'm going to work on shifting some of the electronics on the AP frame around...but, really it comes down to the fact that the camera is behind the main shaft. i may have to adjust how the rig straps to the heli.

it took about 4 hours to get everything assembled and tested on the ground. my folks were in town for the weekend, so i had my first test flight with my dad manning the AP controls out of the bed of my truck (in the pictures).

one thing's for sure. flying AP is a lot different than 3D. i'm used to flying right down on the deck. my neck hurt following this thing around after 3 minutes. and, it's a chore keeping it in one spot with no reference to the ground---not to mention this 450 gets tiny fast. i have a lot more respect for those crisp aerial shots now.

just thought i'd share. i'm pretty happy with the outcome. next time out i'll try the AV using the camera's AVI recording function. but, now i need a cameraman.

bullaculla
12-12-2007, 01:47 AM
Thats the best use of the SE case I have ever seen. Nice little setup :)
Is that you on the back of the truck?

cudaboy_71
12-12-2007, 09:12 AM
thanks. that case is a little heavy on one side :P but, i couldnt get all the components in with the battery centered. but, it does work well.

and, no. that's my dad running the camera from the back of my truck. i'm not brave enough to try and fly from the video---yet. he was in from out of town for the weekend. so, now that he's gone back home i need a photographer :/

bullaculla
12-12-2007, 07:46 PM
thanks. that case is a little heavy on one side :P but, i couldnt get all the components in with the battery centered. but, it does work well.

and, no. that's my dad running the camera from the back of my truck. i'm not brave enough to try and fly from the video---yet. he was in from out of town for the weekend. so, now that he's gone back home i need a photographer :/

Thats my biggest problem. When I have a day off, that means most of my photographers are working. Thats why most of the test photo shoots were at work.
I find it ironic that I am a professional photographer, yet I never take any pictures with my helicam. I am just the pilot :o

iflynething
12-12-2007, 11:52 PM
What's the usual lifting weight of a 450. I just got one and am wondering. I have a little Nikon L4 P&S that I use for aerial photos and it's not that heavy but not light either.

Would a higher head speed help I'm guessing?

~Michael~

cudaboy_71
12-13-2007, 12:12 AM
i havent even weighed my setup. (having issues getting the 9303X dialed in w/ AR6200)

but, it has no problem lifting what i'd guess is a good 16oz. i havent tamed it down for AP...this is my regular 3D machine....headspeed around 3000 and 325 woods. i'm waiting on a set of 335s and will lower the headspeed and see how that goes.

but, based on how this one lifts off, i think i could carry an additional camera.

Tonystott
12-13-2007, 02:35 AM
Mine weighs in at 1160g AUW with approximately similar gear.

helid
12-13-2007, 07:20 PM
Are you powering the heli and AP rig from one battery? I was planning on having a second 700mAh 11.1v to power the video downlink, second Rx, tilt servo, shutter control and the camera.

Did you leave the AA batteries in your camera?

cudaboy_71
12-13-2007, 07:39 PM
the AAs power the camera. everything else is running off the 3s lipo powering the heli. 12VDC to the downlink; 5vdc to the pan/shutter circuit through BEC.

Tonystott
12-14-2007, 08:03 AM
I power the downlink and camera from a separate 2S 300mAh LiPo, which is good for about 20 minutes (change every second flight battery) the rest (heli, plus tilt and shutter) driven through a UBEC

Sandy
12-14-2007, 11:16 AM
Nice work and pics.. Where did you get the info for tapping the shutter circuit?

cudaboy_71
12-15-2007, 01:04 AM
Nice work and pics.. Where did you get the info for tapping the shutter circuit?

thanks. it was a $70 camera. so, i wasnt worried about breaking it. i just pulled off the case and started in with the volt meter around the 4 solder points around the shutter. i actually thought to take a picture while i had it open. if you get the same camera, it's fairly straight forward. there are 3 contacts on the front of the switch, and two contacts to the rear. if you permanently short the front left and rear left (the focus circuit, best i can tell), then the front center and back right are the shutter.

of course, i insulated the bare wires before buttoning it all back up. i just took the photo so you can see the connections.

using the picoswitch to short the shutter circuit (red wires) fires the trigger to start the movie mode or take a photo.

warning: be mindful of the cap for the flash under the black tape. that thing will pack a nice little punch.

Akoni
01-07-2008, 09:53 PM
How well does this rig fly? Is it sluggish with that much underslung weight?

cudaboy_71
01-07-2008, 11:13 PM
funny you should ask today. i just got a couple of pairs of 335s thursday. but, it has been too windy/rainy to try them out. but, i should know this week.

with the 325s on 13t on the 430XL you can definitely feel the weight. but, it has no problem carrying it. the term 'sluggish' would depend on what you were trying to do. it's not going to do any rainbows. but, it climbs and descends to a stop just fine.

i have a feeling the 335s will help a lot, though i'm not too keen on regearing the motor for AP because this is my regular flyer as well.

Akoni
01-08-2008, 08:17 PM
cool. "sluggish" is a subjective term but i was asking with regard to slow/stable flying like you would use in ap. i'm rethinking getting rid of my 450 now (especially since no one has bitten on my asking price!). anyway, maybe i'll build it and do something like this before getting a larger electric.

iflynething
01-23-2008, 10:07 AM
Thats an interesting picture of you looking at the live view instead of the helicopater

~Michael~

cudaboy_71
01-23-2008, 10:49 AM
Thats an interesting picture of you looking at the live view instead of the helicopater

~Michael~

that's not me. that's the photographer. there are two radios: flight control: X9303/2.4ghz; shutter/pan: 9303XP/72mhz.