differnet quad body shapes

bigholty

Member
Hi all still very new to all things multirotor , just wanted to know a few things about the actual shape of the quad frame , firstly im thinking of getting a TBS quad but wanted to know the differences in the actual main chassis , the TBS has a large main body but most others i see have the circular main body , is there any difference in the flying of the quad or its potential to carry greater weight , i understand you can put longer arms on the tbs for more lifting power along with larger props and stronger motors ,but is there any reason for the actual shape ??
 

Electro 2

Member
...but is there any reason for the actual shape ??

The dissymmetric moments moments of "Dead Cat" frames, (E.G. TBS Disco), theoretically make them more stable in fast forward flight. In a conventional "spider" multi frame, the moments are equal in any direction. Hence, the aircraft's response/stability/flight is equal in any given direction of flight. With a conventional frame, there really is no back or front, it will travel in any direction equally well. In reality, the dead cats are popular with young, hot-dog style, flyers because they "look cool".
 

bigholty

Member
lol Dead Cat i like that , well im not buying one because the "young, hot-dog style, flyers because think they look cool" im 47 and in no way could i be called a hot dog style flyer , i eat them lol
for a newbie to quads would you say " spider " type frame would be better to learn with
 

PeteDee

Mr take no prisoners!
Take it from this older guy that the TBS frames are fantastic, love my Disco and Disco Pro.

That said I highly recommend getting something like a basic 450 symetrical frame to get started, the problem of course with all of them is that there is not much space to mount extra gear like FPV equipment. Not really a problem because by then you will want a new lot of gear to go with the new frame anyway.

Pete
 

Mojave

Member
If a TBS is a dead cat; does that make an XY8 a sprawling dog (Pluto on ice)? Anyone remember the cartoon dog Pluto trying to walk or skate on ice?
 


Treg

Captain Fudpucker

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Treg

Captain Fudpucker
This frame is based on the F550 frame I have a spare for my F550, traced it and just used three arms, every other one then expanded it a little. This is a Y6.
 

Mojave

Member
This frame is based on the F550 frame I have a spare for my F550, traced it and just used three arms, every other one then expanded it a little. This is a Y6.

How did you decide on the material for the frame and how did you cut it?
 

Treg

Captain Fudpucker
It was between this or model plywood, I had this laying around, it is 1/4" abs plastic very strong not to flexible which is good and I cut it with my Dremel using a universal bit.
 


RTRyder

Merlin of Multirotors
Nice job!

I've been doing a lot of design and build lately as a way to keep myself busy while stuck in the house. I recently completed a Y6 design and prototype build for a client that turned out so well I decided to build a copy for myself. It's taken a couple weeks of work in the random spare half hour here and there but it finally flew for the first time a couple days ago. Two flights so far and from what I saw on those flights I think I'm going to have a lot of fun with this one, flys really smooth and quite nimble. Built entirely out of 3D printed ABS with the exception of the alloy tube arms, I'll post a couple pics as soon as I get the time and opportunity to take some and post them up.

Ken
 


Motopreserve

Drone Enthusiast
That's some nice work Treg!

I've been flirting with the idea of building a custom "dead cat" design. I've been scouring the Internet looking at the various designs (Disco, QAV, iconic etc). Finally decided I needed to just dig in and do it - ordered some 6061 aluminum today for the arms. At first, the center frame plates will be made from 6061 as well since I have a mill to work with. Ultimately it might make better sense to learn to cut carbon or G10. Going to attempt to keep the motors symmetrical despite the FPV style frame - so that something like a SuperX might work for the FC.

Good luck on the maiden flight!
 

Treg

Captain Fudpucker
I would be careful with alum frame because it is a conductor and may block your signal if the rx is inside. I cut mine from 1/4" ABS
 



Treg

Captain Fudpucker
Beautiful looking y6. It looks like you are using his short arms up front (2) and longer arm on the back. Am I seeing that correctly?

What motors, props, and battery you using and what are you hoping for on flight times. AUW?

You are correct the back arm is 50mm longer, the motors are 3D Robotics 850kv, the props are also 3D Robotics 1047, the battery is 4s 40c 4400mah, as far as time I will be happy if it just flys lol
 

Motopreserve

Drone Enthusiast
I would be careful with alum frame because it is a conductor and may block your signal if the rx is inside. I cut mine from 1/4" ABS

Thanks, point taken. I think I was looking at this first go-round as a prototype to see if I could even get it close to what would work for me. Aluminum is just what I have in the shop at the moment. The real challenge for the H-4 style frame will be cutting enough away to save weight but leaving enough for support and strength.
 

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