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Old Oct 09, 2011, 04:10 PM
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holco's Avatar
The Netherlands
Joined Mar 2007
782 Posts
Build Log
Flexacopter ---The Making Of---

New project for a Heavy-Lifter camera platform.

The objective are,

Multiple system use, such as, Mikrokopter with the V2.0 ESC's / OpenPilot / KKuk / and others.

Hexa setup, + and X mode.

5S setup with one 8000mAh lipo for long efficient flights.

Easy removable 20mm carbon arms with integrated power and led plugs for easy transportation in a custom case with foam padding.

Carbon 180mm frame and carbon supports for the Avroto 2814 short shaft motors.

Compact Wire Rope Isolators (diy) + gel dampers for max vibration damping.

Diy roll/tilt gimbal (AV-200 look alike).

Good looks!!







Dimensions test for the MK V2.0 ESC's mounting holes,


Production of the Avroto supports in 2,5mm carbon,


Flexacopter (1 min 10 sec)


The results,










First test model of a diy Compact Wire Rope Isolator, tests show a vibration reduction of 70% with 500g load,
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Last edited by holco; Oct 09, 2011 at 04:38 PM.
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Old Oct 09, 2011, 10:00 PM
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blindflight's Avatar
CA
Joined Dec 2003
486 Posts
Very nice job , what are you using on the tubes to connect to the motor mounts?
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Old Oct 09, 2011, 10:07 PM
Registered User
Clearwater, FLorida !
Joined Sep 2009
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good show.

nice work

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Old Oct 09, 2011, 10:08 PM
TheyreComingToTakeMeAway!
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USA, ID, Coeur D'Alene
Joined Dec 2003
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very nice work so far, i like that cable isolation idea


Quote:
Originally Posted by blindflight View Post
Very nice job , what are you using on the tubes to connect to the motor mounts?
they look like heli boom mounts or some other 2 piece clamps for other multi helis.
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Old Oct 09, 2011, 10:26 PM
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SirFishaLot's Avatar
USA, VA, Richmond
Joined Jan 2011
188 Posts
Quote:
Originally Posted by derk View Post
they look like heli boom mounts or some other 2 piece clamps for other multi helis.
no kidding....I think he was looking for specifics. i.e. Where to get them.
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Old Oct 10, 2011, 01:30 AM
Taka
Joined Dec 2010
131 Posts
Any chance it will be for sale ?

If price is reasonable, pls reserved one set for me.
PM me the price.

Thanks
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Old Oct 10, 2011, 02:13 AM
Registered User
Hochiminh City
Joined Mar 2004
547 Posts
Nice, it look like you are using logo tail boom mounts.

I did not understand clearly what is this for "Compact Wire Rope Isolator" where does it used.
keep update your process please.
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Old Oct 10, 2011, 02:49 AM
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holco's Avatar
The Netherlands
Joined Mar 2007
782 Posts
Thanks Guys for the nice responses

This project is in real time, so where it will bring us is like looking in a crystal ball

There is a lot going on in our heads and we can promise you guys that this will be a great looking hexacopter, build with the best materials we can find and diy solutions never seen.

Regards,

Pieter Jan & Mario
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Old Oct 10, 2011, 12:27 PM
by Alary Design
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Mesa, AZ
Joined May 2002
1,821 Posts
Quote:
no kidding....I think he was looking for specifics. i.e. Where to get them.
20mm booms, so they must be from a Logo 400. Part number MIK4232
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Old Oct 10, 2011, 04:11 PM
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holco's Avatar
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Some pictures.



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Old Oct 10, 2011, 08:21 PM
Consistently Inconsistent
United States, OH, Dayton
Joined Feb 2011
278 Posts
Flexacopter (1 min 10 sec)

Now I'm depressed, and I hate my scroll saw. Thanks a lot.
:-)



By the way........Nice work!
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Old Oct 10, 2011, 08:39 PM
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Newnan, GA
Joined Oct 2002
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Quote:
Originally Posted by holco View Post
Some pictures.



Wow. That is a great looking hexa. I want a set of these? How much?
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Old Oct 11, 2011, 04:20 AM
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holco's Avatar
The Netherlands
Joined Mar 2007
782 Posts
To estimate the power and efficiency of the Avroto M2814 motors I did some testing on 5S with an Graupner E-11x5 prop.

The test I did was with an 15x15 square alum tube, so the numbers will be a little negatief because round tubes are more efficient
(less bouncing back from the prop down wash), because of this there will also be less vibrations coming from the booms.

The Flexacopter flying weight without camera bud with an 5S 8000mAh lipo will be +/- 3100g divided by six = 517g for each motor
with an extra payload of 1500g (heavy DSLR) the numbers for each motor will be 767g.

So the numbers we are looking for are, 517g and 767g

From 87 > 98 sec at the time line you can see the 500g test and the red line indicate that we are pulling 3A multiplied by six = 18A total with 3000g flying weight.

From 137 > 145 sec at the time line you can see the 800g test and the red line indicate that we are pulling 5,8A multiplied by six = 34,8A total with 4500g flying weight.

80% from the 8000mAh lipo give 6,4Ah usable energy, this will give a flying time of 6,418=0,35h 0,35x60=21min flying time with 3000g.

6,434,8=0,18h 0,18x60=10,8min flying time with 4500g.

Not important bud nice to know is that the total lift power of the six Avroto's is 13,8Kg (3200W!!), so plenty of headroom.





Avroto M2814 (2 min 39 sec)
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Last edited by holco; Oct 11, 2011 at 05:03 AM.
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Old Oct 11, 2011, 04:55 AM
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Wow!!!
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Old Oct 11, 2011, 10:48 AM
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Newnan, GA
Joined Oct 2002
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Can you tell me more about that wire rope isolator? Got any footage or test data like your motor calcs?
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