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Discussion in 'Pro/Adv Discussion' started by xbrute, Apr 22, 2016.
Is balancing the props a must do?
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I think that's a matter of opinion. I'm sure there are people in this world who have never done it and think everything is fine, but if you care about your aircraft, you'd want to do it every so often since it certainly will reduce vibration (i.e. wear and tear).
It's not a must do, but it's a great idea. Here's a good video showing how to do it:
It is advisable to balance props before using them to reduced unwanted vibrations. Just think of wheel balancing on your car.
I find they are balanced right out of the box. I still check to be sure though.
You must have all of the luck. About 50% of my props are usually just a bit off balance right out of the box.
Plucked 2 silvers and 2 blacks out of the bag at random when I first got it. 3 out of 4 were out of balance. I have the balancer (same one pictured above) so I figured might as well. Not a hint of jello and it flies like a dream!
No. I have had several pairs for both my P3 and Inspire and purchased the balancer and never, ever once was any of them out of balance
I'm pretty new to all of this. I have about 8 hours of flying my P3A. I bought a balancer and found that I could improve the balance on all four props. What really surprised me was the immediate and noticeable difference. There is a significant reduction in the sound and I think I've seen about a 10% speed improvement on forward flight. Maybe I'm imagining but.. I don't think so. The prop balancing was very worth the time, cost and effort to me. I got the DuoBro balancer and the extra rod for the P3 props. I used a black marker to mark the end of the rod that is used on the black domed props. I set up the balancer on a very level surface.
The stock plastic/nylon props are very, very close to balanced, but not perfect. I've yet to find one that couldn't be improved with a small piece of scotch tape on top.
The genuine DJI carbon fiber props are not even close. They all need work.
You only need buy the rod and with a can or glass on a level surface check them both ways.
I've had a P1, P2V+ and P3P - all the supplied props were better after balancing, DJIs own carbon props bought separately were the same.
Symptoms are subtle jello in the video when using higher throttle or fighting wind.
If recorded footage is doing this after being smoothed by gimbal and rubber dampeners, the arms are going through hell - and it must increase the chance of cracking.
That's also my experience, precisely. Nylon ones need small touch, CF reinforced need more work.
Every prop that I have used has been balanced. The spares in my case have been balanced. I have a box with several pairs of new props - waiting to be balanced. Alok's comparison to a car tire is dead on. Can you fly without balancing, sure. Can you fly, care for the P3, take better video and take photos better if you balance - yes.
Considering how easy it is to prevent potential issues by using balanced components - why would you not do so?
Ok, here a debate question:
Tape or sanding?
I like to stick clear Scotch tape on the bottom of the props.
I've done both sanding and tape, but haven't balanced my P3P props yet (just bought it...). In the past with my other quads I've used tape, but sanding works just as well.
I sand if the out of balance is the blades, I use clear nail polish or super glue if it's at the hub.
How can you tell if it's at the hub? I have a Dubro balancer, not too familiar with the finer points of it...
There must be too much resistance in the wheels of your balancer. Most DJI props need a little weight added, but I haven't seen a really bad one yet.
This will help.
I've seen some that were pretty bad. I use the Du-bro balancer as well but also have their proper-sized CNC machined rod that has threads for both props. It does make a difference