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Old Sep 20, 2014, 06:30 PM
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Germany, BW, Freiburg
Joined May 2012
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SG Adventure Mini Quad - Asymmetric Carbon V-Frame

This is the third revision of my SG Adventure Quad, that I made back in may this year. This is a short review of the Mini Quad (the normal/bigger one uses just longer arms for 8” or 10” propeller).

The SG Adventure Mini Quad is a V-Type frame. I went on this type, because I wanted something different from the Mini H-Frame hype and I love the asymmetric frame It is also designed for mounting an action camera and FPV gear.

Details about the frame:

V-Type asymmetric 260mm frame (measured motor shaft to motor shaft diagonally)
Weight: only 83 grams
Material: High quality carbon by SGL Carbon and made in Germany

Features:

1. Designed to mount a GoPro or a Mobius camera on the front.
2. Use of 5” or 6” propellers.
3. Mount of almost every flight controller: Naze32, KK 2.1.5., Crius (or clones such the HK AIO Board), OpenPilot, AutoQuad, MultiwiiPro, DJI Naza and also the bigger ones APM 2.5 and Pixhawk.
4. Motor mounting holes: Standard M3 19mm x 16mm; Also M2 16mm x 12mm and M2 12mm x 12mm for the small T-Motor 1306.
5. Distance between the two center plates is 6mm, so there is a place for small receivers such as the FrSky D4R-II.
6. A cover plate for direct mounting of GPS and FPV gear and covering the flight controller (additional weight of 8g).

Photos and more details:

The arms and the small parts are made from 3mm carbon, the other plates from 1mm carbon.

As said the center plates can be used with longer arms for mounting bigger motors and bigger props.

On the SG Adventure Mini I am using the MN2206 2000kv motors from T-Motor. A budget version could be the Multistar 2206-2150kv Baby Beast motor from HobbyKing

For the flight controller I used some spacers. It is not necessary, but so I have some space for ESC or receiver cables. On the down side there are holes for battery strap. Between these could be mounted a standard 30.5 x 30.5mm power distribution board, such the one I used instead of the cable harness.

I also used 8 – M3 x 16mm screws for assembling the frame and 16 – M3 x 6mm for mounting the motors.

I had a big problem mounting the ESCs, because I only had Afro 30A. Ideal would be the Afro 12A, HK BlueSeries 12A, KISS 12A or KISS 18A ESCs. Although the Afro 30A are big, I succeed mounting them by cutting the wires. The Afro 30A are a bit heavy too, almost 100 grams with the power board and cable.

Fully assembled without the battery the Mini Quad weights only 367 grams. With smaller ESCs there could be definitely saved another 50 grams, which would be great for the mini and the flight time. And there is so much free space, when using the small Naze32 instead of my HK Pilot32.

I made some flights today for the first time with the Naze32 and the Mini frame and got about 15 minutes with the 2200mAh 3S battery. Still waiting for some small carbon props for better look and experience.

Im still developing it so let me know, what do you think about my mini frame and what can be done better

Full article on my blog: sgeorgiev.com

Here is a video from cosmic2112 doing some acro with his Mobius onboard
SG Adventure Mini Quad out in the wild!! (1 min 17 sec)
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Last edited by xsergo; Dec 05, 2014 at 03:14 PM.
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Old Sep 21, 2014, 05:04 AM
Registered User
Germany, BW, Freiburg
Joined May 2012
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Naze32 custom motor mix

Custom motor mix for the Naze32:

Custom mixer:
Motor Thr Roll Pitch Yaw
#1: 1.000 -1.000 1.300 -1.000
#2: 1.000 -1.280 -1.000 1.000
#3: 1.000 1.000 1.300 1.000
#4: 1.000 1.280 -1.000 -1.000
Sanity check: OK NG OK

Motor1 distance to Roll and Pitch: 83mm and 108mm
Motor2 distance to Roll and Pitch: 106,9mm and 83mm

More details on how I get the values for the mixer on my personal blog.
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Last edited by xsergo; Sep 23, 2014 at 09:25 AM.
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Old Sep 21, 2014, 05:05 AM
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KK 2.0 and 2.1.5 custom motor mix

KK Board Mixer Editor settings.

CH1: Aileron(Roll) = -99; Elevator(Pitch) = 77
CH2: Aileron(Roll) = 99; Elevator(Pitch) = 77
CH3: Aileron(Roll) = 77; Elevator(Pitch) = -100
CH4: Aileron(Roll) = -77; Elevator(Pitch) = -100

Calculated almost the same way as for the Naze32. I only used another motor distance as my factor, as KK board does not allow using values bigger than 127.
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Last edited by xsergo; Oct 02, 2014 at 03:53 AM.
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Old Sep 21, 2014, 12:27 PM
Oops! There goes a prop...
United States, RI, Providence
Joined Jul 2014
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Looks interesting! Any flight video?
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Old Sep 21, 2014, 04:44 PM
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Quote:
Originally Posted by neighhoma View Post
Looks interesting! Any flight video?
I tested the Mini Version yesterday for the first time, but didn't make any videos of it and today it rains all the day

Finger crossed for the last sunny days in the coming week
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Old Sep 24, 2014, 02:13 PM
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Mounted the GoPro direct on the front today and I am ready for test flying

Update 29.09: Changed the props with the new 6x2 carbon props.
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Last edited by xsergo; Sep 29, 2014 at 04:47 PM.
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Old Oct 28, 2014, 09:03 AM
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Fantastic I have been searching all over the net for JUST this kind of frame.

I was resorting to designing my own frame to have someone cut it for me . Then buy some CF arms from another model.

I have a prototype I made out of GF and wood!! It flies really well but looks pretty ugly though.

I came up with this last night as a first draft based on my prototypes dimensions and angles.

thst is before I saw your frame today! looks like you have the same idea and gone and done it too.
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Old Oct 31, 2014, 07:02 AM
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Joined Jul 2013
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I have finally decided to get one of these little quads, They are quite unique and the shape makes orientation much easier I find.

It all started with a v-tail that I really liked flying because of the easier orientation but v-tails are not that efficient, so I made an asymmetric design and that worked much better.
I ended up with glass fibre and wood for the arms to get strength and ridigity, the problem was it was quite heavy , the bare frame weighed nearly 200g and it was pig ugly too!

I don't do any FPV flying and so all the other asymmetric designs usually have the battery hanging out the back so you can put a camera up front, clean and dirty plates etc.
These would not work for general sport flying so I am pleased to find a frame like this.

thank you xsergo for making such a frame, can't wait now, these are custom made to order, so I may have to wait a while...

more later.....
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Old Nov 15, 2014, 09:53 AM
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Well my frame arrived yesterday and I quickly put it together last nightready for a few test flights today.

DYS1806 2300kv motors
HQ5030 props
afro 12 amp esc's,
Naze32 mini FC
and 1300mah 3s battery

weight around 260g without battery.

not very pretty at the moment, but I wanted to make sure everything was all working together beofre I buried everything inside the frame.

Maiden video being upload and some picures to follow...
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Old Nov 15, 2014, 10:54 AM
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Waiting to check how yours look like and how it flies with 5" props . I tested it only with 6x2props. What is your flight time with these DYS motors and the 5" props?
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Last edited by xsergo; Nov 15, 2014 at 11:10 AM.
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Old Nov 15, 2014, 12:48 PM
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Quote:
Originally Posted by xsergo View Post
Waiting to check how yours look like and how it flies with 5" props . I tested it only with 6x2props. What is your flight time with these DYS motors and the 5" props?
Well I am still fine tuningb the quad at the moment, so I am not sure about flight times but I will let you know..

here are some early pictures, still need to neaten it all up but wanted to make sure everything was working, here are a few pictures:-
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Old Nov 15, 2014, 12:52 PM
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Quote:
Originally Posted by cosmic2112 View Post
Well I am still fine tuningb the quad at the moment, so I am not sure about flight times but I will let you know..

here are some early pictures, still need to neaten it all up but wanted to make sure everything was working, here are a few pictures:-
As can be seen from the pictures above, I also got a set of the longer arms - NOTE these arms, and the ones fitted to the mini quad, are not the standard arms normally supplied, these were specially made for me with custom holes for 2 zip ties on each arm.

maiden video here:-

SG Adventure Mini Quad Maiden (2 min 18 sec)
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Old Nov 15, 2014, 03:58 PM
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Nice to see something designed by me flying some thousand km away from here Looks really good, especially the flips
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Old Nov 15, 2014, 06:11 PM
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Quote:
Originally Posted by xsergo View Post
Nice to see something designed by me flying some thousand km away from here Looks really good, especially the flips
Later on I got more confidence after getting it all dialled in..

SG Adventure Mini Quad (2 min 17 sec)


Hmmm, nice. one happy customer..
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Old Nov 16, 2014, 05:52 PM
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I will be very thankful to everyone for any ideas/comments/recommendation about the design in general. What can be done better? What are your thoughts about the asymmetric design? As cosmic2112 mentioned it, it is easy for the orientation or not?
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