RadMulRot's blog - RC Groups
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Posted by RadMulRot | Nov 19, 2017 @ 11:44 AM | 899 Views
... for a modular tubular frames? Yes it is. After a hefty amount of prototypes and redesigns I have abandoned the idea of modular arm round tube frame. For a very simple reason really. Its too damn hard to make it strong, yet modular. OK, it goes way deeper than that, but the point stays.
Is the round tube concept dead? No. When not afraid of epoxying the parts, its a good way to make ultra light frames.
I am going to make one 4" featherweight as soon as I have some free time available.
And also a 6" freestyle frame.
Posted by RadMulRot | Aug 10, 2017 @ 03:16 PM | 1,347 Views
Here it is, the V9. Going to cut this weekend and hopefully gets its first flight in next week.
I do not dare to say that it is production ready, but its very close. Hopefully I get some ease at work, so I have more time to deal with this thing.
More info about this thing when it proves itself worthy.
Posted by RadMulRot | Jun 11, 2017 @ 01:59 PM | 2,530 Views
Some truck driver wanted to kill me this week by pushing my car forward when i stood at the stop sign. Yet here i am alive.
I have finished another build which i started already a week ago. Slowly, stealing a tiny bit of time from each evening with a wife....

Turned out awesome even tho its a derivate from a v4 prototype. The durability should be fine since the smaller motor pads are positioned so that two holes go through the tube and another 2 from the sides. Will see the truth after it gets its first bites of rocks and dirt!

Dry weight with props on: 155gr.
Posted by RadMulRot | May 22, 2017 @ 03:38 PM | 3,484 Views
A quick 3D model shot. Everything fits! Now need to wait for the stuff to arrive and then to the cutting, bonding, building and lastly my favorite thing in the whole world ---- crashing!

Oh, guess the name... Yes thats right.
Posted by RadMulRot | Apr 30, 2017 @ 04:26 AM | 3,222 Views
A while back i felt like i have reached the maximum potential with flat carbon fiber sheet frames. Also, there are so many good frames available from China and USA lately, so i felt like building something different. Something which can't be just mass manufactured. Something better, lighter and beautiful. Something absolutely top notch.
So i started experimenting with mini tube builds.
Here's two of my latest prototypes.

The sub150 is made purely for 150gr race class we have here in the winter season. It was pretty challenging to build.
The "nutter" is yet to see its first flight. Im sure it goes like nothing else, but the durability of the epoxy bonds need to be tested. Its extremely rigid, but will it hold together? I DNO... yet.
Posted by RadMulRot | Dec 08, 2016 @ 12:57 PM | 3,424 Views
Pretty much finished it today.
This is a derivate from SLM. Basically pulled the back longer, slammed the thing lower, redesigned the sides and figured out the front.
Here's the CAD shot of it.




Oh, and of course,- drew the Hero 5 Session mount for this baby.
This puppy is designed to be in perfect weight to toughness ratio- no unnessesary weight. Just like my other frames.
No, its not a true X. The back side is slightly wider. The custom mixer looks like that:

mixer custom
mmix reset
mmix 0 1 -1 0.976 -1
mmix 1 1 -0.952 -0.976 1
mmix 2 1 1 0.976 1
mmix 3 1 0.952 -0.976 -1
save
Posted by RadMulRot | Dec 03, 2016 @ 08:32 AM | 3,562 Views
Some of us love to break miniquad arms. Modular arms make repairing less painful.
So here it is. My SLM.



12mm wide arms slammed between a full bottom plate and a small size middle plate. Thanks to compact design idea its only 2mm wider than an SL and my calculations tell me, that its going to be pretty light - well under 90gr for 4mm arms version. I'll cut this as 5 and perhaps also as 6 incher.
Posted by RadMulRot | Nov 29, 2016 @ 01:13 PM | 3,526 Views
And they are ready!


3 to 3.5 inch SL frame. 41.5gr. 169mm.
3mm unibody CF bottom. 2mm CF upstairs.



Fits 1306, 1307, 1407 and other motors in same class.
My personal quad will get 3600kv emax 1306's.
http://www.banggood.com/Emax-RS1306-...?rmmds=myorder


And he's big brother:
The 5 inch SL frame. 58gr. 211mm.
4mm unibody CF bottom. 2mm CF upper components.



Fits any 2205, 2206 or other same class motor.
My personal quads get Emax RS2205S's.

Both of the frames have aluminium screws and standoffs. They fit wide gopro2 style fpv camera lens. Battery on top or bottom if HD cam is used. They are light, have very low drag area and are as durable as it gets for the weight. Both have maximum electronics stack height of 30mm and fit any 1177, 1190 camera.

I have a spare of both, but they don't come as cheap as asian quads.
65€ for the 3.5" and 75€ for the 5". PM or comment if interested.

Edit: Only one 3.5" left to give away.
Posted by RadMulRot | Nov 15, 2016 @ 01:41 PM | 3,474 Views
TLDR or a short version of my long story:

Im in progress and in search of getting funds together for startup investment. Not too much. According to my plan, around 15.000 EUR is needed pre-launch.
Since I have some web building knowledge, some marketing experience and I am an engineer without a diploma, i do almost everything myself.

Whats coming:

Exciting new carbon-hybrid sheet material. It has up to 32% better strength to weight ratio with no significant drawbacks concerning hobby aircraft frames.
Yes, I have done several prototypes and testing throughout the past year I have been developing this.

Awesome new multirotor frames. Some hints of that:


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