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21 votes

What is a good alternative to carbon fibre for a quadcopter frame?

There's no denying the fact that when it comes to materials that are strong, stiff and light at the same time, carbon fiber is king. If you're looking for performance, there's no way around it. If ...
FlashCactus's user avatar
  • 2,997
10 votes
Accepted

How does frame stiffness affect a quadcopter?

Background Stiffness, oscillation, and vibration damping are separate concepts but all somewhat relevant to the question. Each affects flight dynamics, and each is (somewhat) a function of material ...
Kenn Sebesta's user avatar
  • 1,892
10 votes

Is it better to have a bottom heavy quadcopter or a top heavy quadcopter when it comes to a quadcopter stability?

It depends on what kind of stability you're after. Nicolas Petit wrote a paper on this several years ago, the graphics below are taken from Pages 4 and 5. The summary is that a higher CG is better ...
Kenn Sebesta's user avatar
  • 1,892
7 votes
Accepted

why do drone frames have spaces and holes

A major consideration is weight reduction; if material can be removed without significantly reducing the strength of the item, this will result in an increased payload or flight duration. This is ...
Kralc's user avatar
  • 6,046
6 votes

What is a good alternative to carbon fibre for a quadcopter frame?

It depends on what kind of airframe you want to build, what size it is and what you intend to do with it. Early DIY drones often used moulded plastic, for example he immensely popular DJI Flamewheel. ...
Drones and Whatnot's user avatar
5 votes

Is it better to have a bottom heavy quadcopter or a top heavy quadcopter when it comes to a quadcopter stability?

As far as I know, it doesn’t make too much of a difference in regards to flight stability because of something called the Drone Pendulum Fallacy, which describes how the drone rotates about the centre ...
Drones and Whatnot's user avatar
5 votes

What is a good alternative to carbon fibre for a quadcopter frame?

Polycarbonate frames can work quite well, but they will flex more. I have made a lot of them and they get a lot of flying time in carpark racing locally.
ctzsnooze's user avatar
  • 301
4 votes

What is a good alternative to carbon fibre for a quadcopter frame?

It would indeed be helpful to know what kind of quadcopter you are looking to make. I have made several quadcopters and one octocopter, but all with the purpose of aerial photography, not racing. ...
Duncan Drake's user avatar
4 votes

What is a good alternative to carbon fibre for a quadcopter frame?

Before carbon fiber frames became popular, I was building my frames with wood. This worked quite well for cruising around, but if you are building a racing drone, then carbon is your best option. If ...
Schome1's user avatar
  • 1,226
4 votes

F450 frame all legs are not stable

Do not worry, I also have an F450 frame(not original) and one or 2 of the legs stick up slightly. I have had a perfect flying experience even if I was using an Arduino as a Flight Controller. Your FC(...
DragonflyRobotics's user avatar
3 votes

Are all drone motors equal

As you guess, motors are approximately equal but are never balanced exactly enough to fly without active stabilising. The receiver just sends the model the position of the sticks on the transmitter, ...
Robin Bennett's user avatar
3 votes

Is superglue (cyanoacrylate) a viable means to repair quadcopter frames?

Won't repeat two answers already given - offer this only as an addition to both. Might try placing a small piece of shrink wrap tubing around broken strut (before) super glue repair. After superglue ...
John Hailey's user avatar
3 votes

Is superglue (cyanoacrylate) a viable means to repair quadcopter frames?

some frames are carbon fiber and I wouldn't expect superglue to work well. CA is surprisingly good on carbon fibre. It wicks into the cracks and around the splinters, and the large surface area gives ...
Robin Bennett's user avatar
3 votes
Accepted

Is superglue (cyanoacrylate) a viable means to repair quadcopter frames?

It depends on the risk you are willing to take, but for such a small drone being flown indoors I'd give it a go1 and accept it may crash - after all, it has already done so once so it can't be made ...
Kralc's user avatar
  • 6,046
3 votes

What is a good alternative to carbon fibre for a quadcopter frame?

I would personally shy away from PCB frames as PCBs are not intended to have the stresses which quad flying, and crashing, will ultimately inflict on the frame. The traces and solder points are prone ...
capaul1977's user avatar
3 votes

What is a good alternative to carbon fibre for a quadcopter frame?

Bamboo is surprisingly close to carbon fiber rods and tubes in all properties except cost. For more complicated shapes, wrap fiberglass cloth around a removable mandrel, or over a lightweight core ...
Camille Goudeseune's user avatar
3 votes

What is a good alternative to carbon fibre for a quadcopter frame?

Depending on your application, a wood frame with a fiberglass wrap may be an option. Many balsa wood r/c airplanes and gliders have their wing center section wrapped with fiberglass and epoxy. When ...
WormBurner's user avatar
3 votes

What is the advantage of a stretched-X frame over a true-X or squished-X design for racing?

I'm not a frame designer, but one distinguishing characteristic comes to mind as to why stretched-X frames are more common. As you mention, a stretched-X frame has a longer front-to-back dimension ...
ifconfig's user avatar
  • 6,008
2 votes

What is the advantage of a stretched-X frame over a true-X or squished-X design for racing?

There are several things going on here. They can be broken down into three components. Torque lever arm Angular Velocity and Acceleration Moment of Inertia Torque Lever Arm Essentially the distance ...
QuadMcFly's user avatar
  • 1,200
2 votes

How does frame stiffness affect a quadcopter?

TL;DR: Yes, a semi-rigid frame will cause vibrations while flying because it alters the nature of motor and propeller oscillations as the frame parts move around. This will cause a drop in efficency ...
ifconfig's user avatar
  • 6,008
2 votes

How does frame stiffness affect a quadcopter?

I am going to jump in here with more than comments to other answers and I am going to answer this question in my own unique way. First, I have a similar related question, and I recently posed it to an ...
HansenJC001's user avatar
2 votes
Accepted

Can something be mounted underneath a quadcopter rotor?

If you block the airflow into or out of a rotor, you reduce the lift it can generate (approximately) in proportion to the area you block. That means the motors will have to work harder, and your ...
Robin Bennett's user avatar
2 votes

Will a heavier drone frame help in avoiding toppling. (Not using receiver yet)

The weight by itself is probably not the issue. As long as the frame is strong enough to hold the motors steady it should be fine. Center of Gravity The center of gravity is the 'balance point' in the ...
Kevin's user avatar
  • 501
1 vote

Which DC motors (or others) are good enough for my multi-function drone?

It is just about possible to make a quadcopter fly with brushed DC motors, but almost no one uses them. They are heavy and need to be run pretty hard, which wears out the brushes in a few hours. ...
Robin Bennett's user avatar
1 vote
Accepted

Difficulty with purchasing drone frames

There is no 'standard'. Motors are available in a wide range of sizes for different applications. You wouldn't expect to fit a tinywhoop motor or a 10hp giant scale motor on this frame. Most motors at ...
Robin Bennett's user avatar
1 vote

How does frame stiffness affect a quadcopter?

The Geeling Lightning 120 is known for its very flexible carbon, but when I fly it in my 100 foot back yard with many trees, I notice no problems. I love this 3" quad. I did however have enough damage ...
thaus's user avatar
  • 11
1 vote

Difference between T700 carbon frames and 3k carbon frames?

The "T" stands for Toray Composite "TORAYCA" carbon fiber The frame probably uses T700G, based on the applications Toray has listed for the 2 types of T700. T700 is also the fiber ...
Abandoned Tech's user avatar

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