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Apr 03, 2009, 03:25 PM
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bernienepper's Avatar
Heres what I've done -- Really interested in seeing your proof of flight video..

Mine doesn't want to leave the ground..

http://www.youtube.com/watch?v=Yu-PTuZQX9c

http://www.youtube.com/watch?v=WcbeI9VkQpE

http://www.youtube.com/watch?v=_y50IkN4wuM

http://www.youtube.com/watch?v=3r44XzG8lfo

My buddy Aaron drives while I film

http://www.youtube.com/watch?v=uVKpVVaTRIM

What think ? ? ?

The pics didn't load in the right order
Last edited by bernienepper; Apr 03, 2009 at 07:49 PM.
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Apr 03, 2009, 06:11 PM
Registered User
bernienepper's Avatar
Where oh where do the CG be.? .?

So built batt box - whata you think ?
Apr 03, 2009, 06:53 PM
Registered User
saotome's Avatar
bernienepper: nice work. However I think you built it a little too heavy. What is the AUW and what's the size of the battery you are using?

You don't need ailerons on this thing - they are ineffective and you really should turn with rudder. FYI my truck was 340g with a 1300mah 3s in it. I don't think you need you adjust the angle of attack on the roof either.

Since you said that it wouldn't leave the ground, why not do a quick thrust test: hold the truck at the tail and point the nose up, and see if it can support its own weight as you apply throttle. I suspect that the kv of your motor is too low for a small prop.

Good luck!
Apr 03, 2009, 07:18 PM
Real name's Teja :)
teha99's Avatar
Wow guys, I didnt think that this thread would move a long

I went t o the WRAM show a month ago and bought some good indoor 3d motors and escs. It took me a while to get experienced and have enough money to permenantly stay in the hobby.

I am planning of starting this build as soon as I get the wires and plugs and all that soldered on together.

Great builds guys! The video of them flying in the gym is really cool now that I look back on it. I wonder how they got them to fly like that?

Also, anyone know where I can buy some depron on a chain store like ACMoore or MIchaels?

Thanks and good flying

~Teja
Apr 04, 2009, 03:17 PM
Registered User
Bernienepper, you need lots of speed to get in the air. Throwing won't work unless you throw it very hard to gain speed. My truck won't lift itself if I hang it nose up, but it flies. With bigger power/weight ratio it might lift itself up easier.
First attempt in the video was good until the truck spinned, I bet it would have left the ground soon. CG is inside the back of the cab, I'll measure mine tomorrow and make a drawing. I hope the weather is fine so I could finally take that video as a proof.
Apr 04, 2009, 03:54 PM
Registered User
bernienepper's Avatar
http://www.youtube.com/watch?v=jrZvMcX87MM

Aaron flys while I film/yell.

Ready to fly weight 18.5 ozs. with 1350 Rhino lipo

Autopsy motor control linkage slipped - need to locktite it.
Apr 04, 2009, 05:54 PM
Real name's Teja :)
teha99's Avatar
Was it too tail heavy? Looks it...
Apr 05, 2009, 06:10 PM
Registered User
bernienepper's Avatar
http://www.youtube.com/watch?v=eJm02oq3T0M

Aaron flies I cry
Apr 05, 2009, 08:06 PM
My plans are in my blog
Rusty-Gunn's Avatar
Too bad your truck cratered, it looked cool.
Apr 05, 2009, 09:51 PM
NewFlyer
KenChin's Avatar
bernienepper... good effort! I think your control surfaces are just too sensitive. Maybe expo would help.
Apr 05, 2009, 09:55 PM
NewFlyer
KenChin's Avatar
Furthermore... i think you introduced the Delta surfaces just directly behind your motor. Since the distance between the two up/down surfaces are so close apart, it might send your Truck into a roll effect rather than a soft gentle turn like other delta wings.

Try dealing away with that function and keep with Elevator link with your motor (Thrust Vectored) and Rudder to steer. You might want to link that with Aileron, so Aileron is Rudder and Rudder is Rudder as well.

Just an opinion... I just can't wait to start building the truck as i need to complete my other projects first. Good luck !
Apr 06, 2009, 06:11 AM
Registered User
What a bummer bernienepper,
It looked like it was almost there except for the overcontrol.

Tim
Apr 06, 2009, 06:54 AM
Registered User
No worries, some hot glue and it will be like new. Looks like it didn't broke into 20 parts, only few big ones.
Apr 06, 2009, 05:41 PM
Registered User
bernienepper's Avatar
I think I can..

Have a couple more ideas before I trash it
Apr 08, 2009, 04:40 PM
Registered User
Ah, finally got that video. Here it is:

Scratchbuilt RC flying truck (5 min 37 sec)


Crashed it few times, only minor damage in last crash.


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