View Full Version : Another Balance/Sharpening Question

03-24-2011, 10:56 AM
Ok, so I figured I'd start learning how and bought the necessary tools. I put the prop on the balancer and found the heavy blade. After filing and filing and finally getting the prop balanced I was doing the happy joy joy! So I take my newly b/s grimracer 40x57 3 and compare the weight on the digital scale with the b/s grimracer 40x57 3 that I purchased from OSE a while back.

Here's the difference in weight:

Grimracer 40x57 3 (Balanced & sharpened by them)
9.89 grams

Grimracer 40x57 3 (Balanced & sharpened by me)
start weight:

end weight after B/S

My query is this, looking over the two, the grimracer prop b/s by them is alot thinner and lighter than the one I did. So in seeing this, would the two props perform entirely different? Or is there a set parameter as far as how much weight must be taken away from the unbalanced/sharpened prop? I've read all the links other folks have posted about prop balancing, but none of them talk about weight of the prop or how much should be taken away. Or does it not matter as long as its balanced and sharpened? Your thoughts....

03-24-2011, 11:26 AM
It is a matter of experience I think. It's good to make the propeller thin and sharp but no good to make it too thin because it will be bent easily. I have destroyed a few props since I started experimenting on them ....
but now I think that I am on the right way.
Testing is the only way to find out.

03-24-2011, 04:55 PM
That's less than 1/10 of an oz difference - nothing to be worried about as long as the blades match and it's balanced.

03-24-2011, 04:59 PM
I guess I will do some testing the next few days and see if there is any significance in that little bit of weight or thin/thickness.