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Old Nov 19, 2012, 11:24 AM
Do a Barrel Roll!
rcbif's Avatar
United States, OH, Medina
Joined Jun 2005
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My scrachbuilt mini soapbox tricopter. The airframe cost $3 minus the landing gear

http://www.rcgroups.com/forums/showthread.php?t=1773322

Mini SoapBox Tricopter (5 min 37 sec)
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Old Nov 19, 2012, 11:35 AM
Registered User
South Africa, GP, Alberton
Joined Sep 2012
39 Posts
nice build . i wana build a small quad for messing around with coz the same thing happens when i crash my big fpv quad . i might even build a tri for the fun flying
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Old Nov 19, 2012, 01:58 PM
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Captain3D's Avatar
United States, CA, Glendale
Joined Jan 2012
945 Posts
Thanks Dave.

I ordered a few sheets of this magical G10 to see what it was all about. I was disappointed to find it was less stiff, more expensive and a little heavier than the five layer 5mm birch ply I can buy at Michaels craft store. It would be better for surface wear and pivot hole strength etc I think.

I should be getting some aircraft grade ply today which is expensive but has five layers in the 3mm version so I want to see how that compares.

I quite like being able to just hack away with the jigsaw. I keep changing the design anyway.

phil

Quote:
Originally Posted by Birdman4498 View Post
Hi Phil, I had mine cut by Eric (DialFonZo). He posts in this thread and resides in Quebec. He has a CNC set-up that I believe he built himself. I sent him a photo of a mockup on how I thought it was going to look and then emailed him a scanned copy of a paper cut out I had done with the dimensions on it. I don't have a cad and probably wouldn't be able to use it anyway. I tried doing a wooden prototype but was not as accurate as yours in the cutting so after seeing some of Eric's work I decided to go straight to the G10. I am very happy with the results. I think once I ream the props and balance rather then drill, (which I noticed did put them off centre) the jello will be gone completely.

Dave
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Old Nov 19, 2012, 02:02 PM
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Captain3D's Avatar
United States, CA, Glendale
Joined Jan 2012
945 Posts
Quote:
Originally Posted by rcbif View Post
My scrachbuilt mini soapbox tricopter. The airframe cost $3 minus the landing gear

http://www.rcgroups.com/forums/showthread.php?t=1773322

http://www.youtube.com/watch?v=4ELjk6ISfJI

Wow that is tiny. Love it.

phil
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Old Nov 19, 2012, 06:12 PM
Out of helis, sanity returning
Tallahassee, FL
Joined Feb 2009
2,097 Posts
More soapboxes :)

It's a busy picture, but here are my two just completed soapbox quads. A friend said the electronics were a "clean install". Pun intended I think. LOL

One has a CC3D, DT750 motors with 10x4.5 props. The other is a CC, DT700 motors and 11x4.7 props.
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Old Nov 20, 2012, 01:46 AM
AVR Dude
United Kingdom, England, Cnwll
Joined Jul 2011
1,654 Posts
Quote:
Originally Posted by rcbif View Post
My scrachbuilt mini soapbox tricopter. The airframe cost $3 minus the landing gear

http://www.rcgroups.com/forums/showthread.php?t=1773322

http://www.youtube.com/watch?v=4ELjk6ISfJI
Very nice. What kV motors are they and what battery are you using please?

Doh - found most of the info

http://www.rcgroups.com/forums/showthread.php?t=1773322
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Last edited by Steveis; Nov 20, 2012 at 01:55 PM.
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Old Nov 20, 2012, 02:22 AM
Registered User
South Africa, GP, Alberton
Joined Sep 2012
39 Posts
Silicon Vibration Dampener Testing (1 min 1 sec)


I am testing the new dampneres . The Quad feels alot more precice since adding them . but i think there is a little jello in the video . please comment with what you think .
bearing in mind that im flying with slightly damaged props .
one is not straight anymore and two have small bits missing on the ends
and none have been balanced .

for more check out www.jamiedco.com
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Old Nov 20, 2012, 03:15 AM
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Joined Jun 2008
952 Posts
not sure if this counts, i used some of the boom leg holders from rusty to make a h-copter. super light and super fun
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Old Nov 20, 2012, 02:38 PM
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Captain3D's Avatar
United States, CA, Glendale
Joined Jan 2012
945 Posts
I think I see a little but it is hard to tell as the video does not play at a good frame rate. Looks like 15fps or less to me.

phil

Quote:
Originally Posted by jamiedco View Post
http://www.youtube.com/watch?v=ohWkZTPRydg&feature=plcp

I am testing the new dampneres . The Quad feels alot more precice since adding them . but i think there is a little jello in the video . please comment with what you think .
bearing in mind that im flying with slightly damaged props .
one is not straight anymore and two have small bits missing on the ends
and none have been balanced .

for more check out www.jamiedco.com
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Old Nov 20, 2012, 02:57 PM
kad
Quad Crasher
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United States, NY, Poughkeepsie
Joined May 2012
663 Posts
Quote:
Originally Posted by rcbif View Post
My scrachbuilt mini soapbox tricopter. The airframe cost $3 minus the landing gear

http://www.rcgroups.com/forums/showthread.php?t=1773322

http://www.youtube.com/watch?v=4ELjk6ISfJI
Nice! Do you have any details on the yaw mechanism that you can share?

-K
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Old Nov 21, 2012, 01:39 AM
AVR Dude
United Kingdom, England, Cnwll
Joined Jul 2011
1,654 Posts
Quote:
Originally Posted by kad View Post
Nice! Do you have any details on the yaw mechanism that you can share?

-K
Check out post #41 in this thread: -

http://www.rcgroups.com/forums/showthread.php?t=1308047

Also search the web for rcexplorer
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Old Nov 21, 2012, 02:43 PM
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Joined Jul 2009
484 Posts
Quote:
Originally Posted by jamiedco View Post
http://www.youtube.com/watch?v=ohWkZTPRydg&feature=plcp

I am testing the new dampneres . The Quad feels alot more precice since adding them . but i think there is a little jello in the video . please comment with what you think .
bearing in mind that im flying with slightly damaged props .
one is not straight anymore and two have small bits missing on the ends
and none have been balanced .

for more check out www.jamiedco.com
I"ve used silicone dampers before with little success. The definitely damp out the high-freq vibrations from the props but tend to increase low freq oscilations. In one case I had a resonance problem where the camera was visibly shaking, even though the rest of the rig appeared completely stable.

Silicone dampers depend greatly on the weight/load on them, size and thickness of the material, and attachment method.

With that said, I have had great success just using RC helicopter canopy mount grommets. Drill the holes a bit oversize, insert the grommet, use washers and bolt it lose and they seem to absorb all the high freq vibrations but keep everything attached solidly.
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Old Nov 21, 2012, 10:14 PM
Stop me before I build again!
United States, NY, Albany
Joined Sep 2012
1,320 Posts
Build or bust tonight.
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Old Nov 22, 2012, 01:35 AM
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United Kingdom
Joined Jul 2012
378 Posts
Remade the little spider quad I did a few weeks back after beating it into the ground several times,
Tried it with a longer main body first as you can see from the pencil marks on the plate but although it flew pretty well it had tons of twist in it so pushed the arms tight together to help keep the frame more rigid, feels better in the hand so far,
Will mount the cc3d and the esc's tonight and maybe a tester at the weekend if this crazy storm ever moves away!!
Will be putting an earplug gopro plate on the front too.

340mm wide 310mm long, I never use auto level so the symmetry doesn't matter.

I really like the spidery layout for LOS flying, really helps orientation.
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Old Nov 22, 2012, 06:58 AM
Woof!
Denmark, Region Zealand, Roskilde
Joined Oct 2012
14 Posts
@jimbob69: that's a sweet li'l thing

I see, that you didn't put screws/bolts through the booms. Are you simply using standoffs at each side of the booms? Maybe a picture from the side would help a bit

Thanks for sharing
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