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The wires will, but the bullet connectors might not. It depends on what size you are using because the hole is only 8mm in diameter. If they don't fit, you could stagger the bullet connectors. For example, you could have one wire 1 inch, another 1.5 inches and the third wire 2 inches. I hope this helps!
Carbon fiber. Carbon is incredibly strong. That is what diamonds are made out of. These rods are very light and rigid. Be careful when you cut it though. Carbon dust is bad for your lungs. Hold it under running water while you cut.
Could i band two of these together to make a quad frame? What i mean by this is two next to each other for each arm. i am concerned that they may flex too much.
Hi wesix, I tried to use these as arms for my quad, but it wasn't such a good idea. I drilled a hole through them to put a screw - so far, OK to do it. But when I put the screw and tightened in the center frame, the tube started crickling and shattering. Apparently it does not hold much pressure when compressed.
Just to explain better what I did: I have a carbon plate under the quad, then I put these square tubes over the plate, and another plate over the tubes. Then a screw through all to hold in place. So the force applied by the screw cracked the tubes.
This is unidirectional carbon fiber. All if the strength is along the axis of the tube so that it can resist bending. By screwing into it, you split the fibers apart - just like would happen with wood if you screw into it too close to the end.
It will be better to not screw into the rod itself, but use a machine screw with a nut and washer on the other side. you can also mount these by clamping or by epoxy.
I recommend doing it this way, i got the idea from David Windestä*l from flitetest and rcexplorer.se. He made one this way and i will do it this way to on my upcomming tricopter www.link
hi kjefos
i used the 6 mm square tube inside the 10 mm square tube
but the large tube cracked
so if i make this again do i use the 6 mm all the way inside
or 20 cm with plywood on the outside of the large tube?
6mm all the way inside will not help. You can place zipties around the outside of the 10mm square tube where the 6mm is inside (e.g. one ziptie every 1cm extras on the end) and/or cover the outside of the 10mm square tube in plywood.
I use this as the main spar on my 2.5m fpv wing and do some long distance flights with 3x 5000mah 3s batteries for motor and 1x 2200mah battery for fpv gear ect.
I pull some high G's when coming out of a dive and the spar doesn't even bend at all.
To join the 10.5 x 10.5 spars I find the 6mm x 6mm spars to be a good fit as fron diagonal corners they are 7.6 mm and stronger then the 8mm tube and then I use CA to glue them in to each other.
Good one HK
cm sir . i call it long enough for the winf center or Brace , Or building custom wing, from scrach built . do feel happy as to buy this . i like many many ,. but i can not offord to but a dozen .but maby a few will help make stronger wing rods , use 2 of this to replace the rod provided in wing strut. cut a new area in foam . v out the area you want .cut into foam .lay rod .heat Glue in place,
Do you guys think these are strong enough to be used to build a quad copter that has a max of 8lbs (3.6KG) of thrust, with a arm length of 20-24 inches? I may run a crossbeam from arm to arm with smaller square tubing to help increase rigidity and torsional strength.
I believe it it strong enough, but to be on the safe side what I am doing is I filled the hole in this carbon fiber square tube with a 9mm diameter wood rod, just to make it even stronger.
Thanks for your reply, con244. I have a quadcopter, but I would like to use this tube for replace mine. It weights like 4 pounds. This tube will support it? If you like, you can send my photos or comments of your project to raider1001 at h o t m a i l. Thank you.
Put an 8mm balsa rod in the tube and then pour in some ultra thin CA at both ends. This will greatly improve the strength and allow you to drill. If you do drill it, do it slowly and then seal the drill hole with CA.
Finally these are stock again, I just got some for my tricopter build. I'm hoping they are strong enough to stay * 60-70 cm length without having noticable flex ( I also got some 8 mm CF tubes).
I know there is a Time difference between Honkong and Switzerland... but in Switzerland mennwhile we have the 8. of setember...
The phrases "Stock updatet frequently" and "End Aug" are a little bit optimistic... arn't they?
with kind regards
Martin
Hello! Has onyone ever cut this carbon fiber square tube 750x10.5mm in half? And did you use band saw? Was it a clean cut? Please inform me if you have this information!
My tubes came in at 46.7g and are less than the stated weight of 49g. They are incredibly strong and rigid. The weight is very reasonable for the strength so I am very happy with them and will order more.
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Overall Rating
farshidjh
27 likes
Value
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2 thumbs up!
This is light, powerful and cheap. I used two to build my quadrotor. However I broke the frame and found out that these are prone to twist the most. People are used to push insert to overcome this. use something as an insert. it can be : 8 mm Balsa dowels with glue (Gorilla quick glue) 8 mm carbon fiber rods
read a review on strength www.link
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Overall Rating
TurboCinqy
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Like it?
Great for a carbon stick. It's very hard and will not break easily. unfortunately it doens't have fibers in opposite direction so it splits quite fast.
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