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Prop Balancing
Posted: Wed Feb 11, 2015 11:09 am
by KevG
Come on guys lets have it!
Prop balancing, what do you use and how do you do it,
Re: Prop Balancing
Posted: Wed Feb 11, 2015 12:23 pm
by Derek
Flitetest did several videos on multi rotor prop balancing. Here is one of their videos on using a laser pointer:
https://www.youtube.com/watch?v=PqtUSSdf8b4
Re: Prop Balancing
Posted: Wed Feb 11, 2015 2:37 pm
by danhampson
I've flown balanced and unbalanced props and with the gemfan 5030 props there is little to no difference between the two.
Re: Prop Balancing
Posted: Wed Feb 11, 2015 2:45 pm
by KevG
Thanks Dan, I just got Diatone 6030 props, same as the 5030's that I have on it now to try, going to do a comparison tonight as the manufacturer says the 6030 on my setup should be more efficient, we will see!
Re: Prop Balancing
Posted: Wed Feb 11, 2015 7:12 pm
by Graham Lawrie
You have to balance them??? LOL:)
Re: Prop Balancing
Posted: Wed Feb 11, 2015 7:14 pm
by Stambo
I don't bother balancing my mini quad props.
You can not balance a small prop without it on the motor.
As soon as you change the position on the motor the balance changes so there is no real point in having "balanced props" in your box of spares.
If you break them on a regular basis you are forever balancing small props.
If you are not breaking them you are not trying hard enough.
https://www.youtube.com/watch?v=8Nu7YwajBhg
Re: Prop Balancing
Posted: Wed Feb 11, 2015 8:26 pm
by danhampson
nice video stambo looking for laser pens now.
Re: Prop Balancing
Posted: Wed Feb 11, 2015 8:42 pm
by danhampson
Lol ordered a cheap laser pen off eBay. Went on YouTube and test flight have done it again
Flite Test - Laser Balancing Props - FLITE TIP:
http://youtu.be/PqtUSSdf8b4
Re: Prop Balancing
Posted: Wed Feb 11, 2015 9:02 pm
by KevG
Yeah I had to balance them, just done it with a thumb screw type balancer I use for 325mm main blades, flew them unbalanced and it was horrible so balanced them in the hall as I was putting them on, they then flew lovely.
Re: Prop Balancing
Posted: Wed Feb 11, 2015 10:04 pm
by pvolcko
DuBro prop balancer here. I have yet to actually fly any of the props I've balanced, though. QAV500 is still sitting around half finished.
I've balanced and spun them up on a motor hard mounted to my work bench. Felt the bench before and after to see if I cut the vibes down and it did work. Don't know how well though until I put it in the air.
Re: Prop Balancing
Posted: Wed Feb 11, 2015 10:21 pm
by Stambo
I find that you need to balance them in situ.
On my bigger quads I put where I will use it, spin it up and check the balance with the laser, then rotate it on the motor a 1/4 turn at a time until it is as good as it can get.
Then I start adding tape until it is near perfect.
If you take it off, move it to another motor or have it sitting with your spares "balanced", then you put it back it will be out again.
I have tested this many times just to be sure.
Same thing on my Sunnysky motors so it is not just motor quality.
Re: Prop Balancing
Posted: Thu Feb 12, 2015 12:27 pm
by KevG
My props after balancing

- image.jpg (1.58 MiB) Viewed 1616 times
Re: Prop Balancing
Posted: Tue Feb 17, 2015 1:05 pm
by Derek
That's really sweet looking, Kev! I like it!!!
Here's a question that I don't think I've seen asked yet....Will I need a 6 channel rx? How many channels are required for a lil bugger mini quad?
Re: Prop Balancing
Posted: Tue Feb 17, 2015 1:58 pm
by Lee
Yep 6ch
THR, AIL, ELEV, RUDD, Flight Mode, And AUX for adjusting PID on the fly.
Re: Prop Balancing
Posted: Tue Feb 17, 2015 6:29 pm
by Stambo
7, need one for the beeper too.
Or one that supports ppm for a single wire hookup.
Re: Prop Balancing
Posted: Tue Feb 17, 2015 8:30 pm
by Derek
sounds good guys. Thanks for that!
...on the hunt for a 7 channel rx
Re: Prop Balancing
Posted: Wed Feb 18, 2015 8:54 am
by KevG
You will only need the aux 2 channel for setup of pids once that is done you can re assign to the beeper so you only really need six,
Re: Prop Balancing
Posted: Wed Feb 18, 2015 6:27 pm
by Stambo
Always good to have a spare.

Re: Prop Balancing
Posted: Wed Feb 18, 2015 6:37 pm
by Lee
My beeper is stand alone. It is inline with the throttle.
So no extra channel needed. Alarm goes off after 1min of no signal.