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Other › AGL Hex multirotor Build
07-13-2012 04:26 PM  6 years agoPost 1
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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I'll post pictures and descriptions of my Hexrotor build as I go along. This will use a NAZA controller. Will describe additional components as I move along.
Paul
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Initial hex frame with aluminum arms.

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Negative side of distribution board

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Positive side of distribution board

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Aluminum tubing is from a surplus place local
Each aluminum arm (18" ) weighs 2.4 Oz
19 inches (490mm) from center to end of arm (I can always shorten)
.600 OD, .500 ID
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Distribution board mounted with cover over + side

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07-14-2012 01:31 AM  6 years agoPost 2
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Here is the center plate (one of them) with the wires sleeved color coded. Red for right rotation (CW) and blue for left rotation (CCW).
The nuts come off before the next plat is installed.

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07-14-2012 02:11 AM  6 years agoPost 3
CameraWings

rrApprentice

Austin, TX

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GyroFreak,

You can better match the conductivity of your wire at the solder joint if you fan the high strand count wire to give it a larger area of contact with your copper plate.

Overall nice looking build.

Robert

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07-14-2012 03:07 AM  6 years agoPost 4
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Yes, but I have a very wide solder flow around the wires and the copper plate. But your suggestion is right on. Next time I'll do that.
The picture shows the solder joints kinda crappy because I didn't clean the flux, but the solder flow is good.

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07-15-2012 08:42 PM  6 years agoPost 5
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Here is the central hub wiring, excluding GPS (will add that after comfortable with flying setup).
All wiring is left exposed for easy modifications or diagnostics for now.
A top cover goes on that will hide all the spider wiring to the ESC units.

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EDIT: Just noticed my blue/red wires (right left rotation) are on the wrong arms, easy fix later.

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07-18-2012 01:30 AM  6 years agoPost 6
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Here is the Turnigy motor with vibration isolators prior to mounting to Hex-AGL motor mount.


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Will the isolators do any good, probably not.
I will still balance all props.

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07-18-2012 01:51 AM  6 years agoPost 7
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Here it is mounted to one of the struts.


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By the way, anybody using the Turnegy AE-25A, it will not program with a Turnegy programming card, and the beep beep instructions are the worst. I finally found a posting on how to program it written in normal english and then it was easy to program with the beep beep tones.
If you need the clear instructions let me know

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07-18-2012 08:09 PM  6 years agoPost 8
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Added foam (pool noodle) landing strut padding. Not needed but gives a little more visual cue.
I may move landing struts to the middle of the arm later.


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Edit: Initial props will 10X4.5 as shown here.

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07-19-2012 01:20 AM  6 years agoPost 9
sjgusmc21

rrApprentice

San Antonio, Texas

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Gyrofreak....great job! Maybe a silly question on the last photo, but wouldn't the size of the landing 'wheel' cut down on some of the downdraft from the blades....and secondly, looks like there might be a lot of play around the axle....could get blown around a lot. Just a couple of observations and I am probably wrong.

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07-19-2012 06:58 AM  6 years agoPost 10
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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but wouldn't the size of the landing 'wheel' cut down on some of the downdraft from the blades....and secondly, looks like there might be a lot of play around the axle..
Yes for the downdraft, the landing struts will be moved in to the center of the arms.
The pink foam 'wheels' are tightly pinched between the black struts so they won't move around. They are only to give a little bounce protection when landing on concrete, they are really not needed but I put them on to give a little better visual que. The back 3 struts will be pink, front three struts will be blue.
All pink for now since that is what I had in stock.
Hope to have it all finished tomorrow (Thursday) and start some flight testing. Without the camera mounted.
My 4S lipos came in today but initial testing will be with 3S lipos.

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Thanks for the suggestions.
Paul

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07-19-2012 08:17 PM  6 years agoPost 11
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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After over 70 solder connections, the wiring is done.
Each ESC has been programmed and each motor has been tested for correct direction.
Next I need to reprogram the NAZA from a quad to the correct Hex configuration, then plug in all connectors and give her a careful test.
But I'm going to lunch for now. I'll post later some vids of the test flight.
10x4.5 props, overall width is 42 inches.
Paul

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07-20-2012 01:16 AM  6 years agoPost 12
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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First flight went well in that no panics or crashes. Liftoff was pretty standard but once up it was a little pitchy, so need some gain adjustment and curve adjustments. Sorry, no vids as it was late and couldn't find the camera. Only two short flights before squiters attacked.

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07-20-2012 02:24 AM  6 years agoPost 13
sjgusmc21

rrApprentice

San Antonio, Texas

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Glad your flight went well and no crashes! I just can't get over how smooth and easy these things are.

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07-23-2012 01:48 AM  6 years agoPost 14
HansAuf

rrApprentice

Gainesville, Florida, USA

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Congrats GyroFreak!

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07-23-2012 02:29 AM  6 years agoPost 15
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Thanks, I'm waiting on another Eagletree data logger before I do anymore testing. Well, that's my excuse to me, it's just to darn hot to go outside right now.
It didn't seem as stable as my smaller quad, but I need to go to 4S and do some gain tweaking. EDIT: Maybe some 12X3.8 props I have on hand.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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07-23-2012 02:34 AM  6 years agoPost 16
Justin Stuart (RIP)

rrMaster

Plano, Texas

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I like the power distribution board, and I especially like the rubber motor mounts.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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07-25-2012 07:44 PM  6 years agoPost 17
HansAuf

rrApprentice

Gainesville, Florida, USA

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GF, I experimented a lot with motor mount isolation and always found that it actually had the negative of my expected effect. It seems that tends to exaggerate any minor vibrations (Prop, Hub, Bell, etc). I think it is caused by the initial moving mass traveling outward (weight throw) as the rpm increases at the upper most point of the motor/prop assy, then that highest point instead of moving in rotation center, moves in rotation center around circle. Of course it is lessened in turn as RPM is decreased, but you can visualize the effect. You may want to experiment how the thing flies without those motor mounts, having the motors hard mounted to the arms. I saw a better flight with them hard mounted each time I tried it.

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07-26-2012 03:41 PM  6 years agoPost 18
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

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Thanks Hansauf, I will try with and without the rubber dampers, also since the motor mounts can be slid along the tubing I will experiment with shortening the effective length of the arms easily.

EDIT:
To measure the diff with and without, I will hard mount a small keychain camera to the center frame and try to quantify the vibration difference.
I have an Eagletree logger (voltage/current/altitude/rpm) but I don't think they have a vibration sensor.

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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08-01-2012 04:52 PM  6 years agoPost 19
GyroFreak

rrProfessor

Orlando Florida ...28N 81W

My Posts: All  Forum  Topic

Here is the first video with my hex. Edited to short video because my DSL isn't very fast and takes forever to upload to YouTube.
Very blurry and not very crisp, maybe it was to close to dark.

Watch at YouTube

I think about the hereafter. I go somewhere to get something, then wonder what I'm here after ?

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08-01-2012 08:12 PM  6 years agoPost 20
Justin Stuart (RIP)

rrMaster

Plano, Texas

My Posts: All  Forum  Topic

I really want to do the FPV multirotor one of these days.

Avant RC
Scorpion Power Systems
Thunder Power RC
Kontronik Drives

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