How do you balance a master airscrew fiberglass and nylon prop?

its proabably pretty much balanced to begin with, if you have a fingertip prop balancer use it, if not try to put it between your fingers very lightly and see if one blade trys to drop.

I would recommend that you add paint or something to the flat side of the propeller.

Yes, that also, once you figure out that it is unbalanced.

Put the blade on your balancer so it is horizontal. The side that falls it too heavy. You can either sand the heavy side or put some clear nail polish or something like that on the light side. Don't change the props airfoil. The horizontal balance tells you which blade is heavier.

Now put the blade on your balancer so it is vertical. One side will fall. The vertical balance tells you which side is heavy laterally, just like when you do a lateral balance on your airplane.

You know the blade is perfectly balanced when it will stay in whatever position you put it in on the balancer. If it moves when you let go of it, it is not balanced.

My advice to you is to forget about it on a trainer because it's not worth it...

Which is cheeper , a prop or a motor, ALWAYS balance a prop, saves radio plane and rebuilding!

If vibration is so bad on a .40 size airplane that the motor or radio equipment is being damaged, you can bet the prop is not the cause. Unless the hole was not drilled in the center of the prop, you've got other problems.

The difference between a balanced prop and a non-balanced prop is very small if the engine is mounted properly on a properly built airframe.

I've probably had 30 engines and almost as many airplanes...I sold my balancer after the first few. That doesn't mean it's right, but my personal opinion is that it's not worth it.

Just about everyone I fly with goes striaght from the hobby shop prop box to their airplane without balancing...It's a PITA getting them balanced anyway I hated it. I think I would rather sand a LE and hinge the ailerons!

Of course, this is only MY opinion.

Thanks for the info, I like that clear nail polish trick,I think I will try it . Veco

Another option is something visible like a colored nail polish or even white out, if you can get it on smooth enough.

That way when the prop is spinning, it's much easier to see it. It's mostly a safety thing, but it looks cool too...

Gotta side with brian. About the only ones i do are for my nelson pylon engines. On a trainer to keep it perfect is gonna require balencing every flight and just not normally worth it.

John

One trick you can use is instead of balancing the prop, mark which blade is heaviest and mount the prop so that the heavy blade is opposite the piston. On most all the single cylinder engines, the crankshaft counterweight isn't quite big enough, so the extra weight can actually make the engine run smoother than a balanced prop. YMMV.

Hi; Now that sounds like a better idea than useing paint to balance a prop. Thanks...Veco

throw it aways and get an apc

finally done - factory balanced props with 0.01g tolerance - http://www.einpresswire.com/shareabl...FcbEDBwhOXlaAx