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General control line discussion => Open Forum => Topic started by: kevin king on July 29, 2025, 12:41:36 PM

Title: 3 blades prop
Post by: kevin king on July 29, 2025, 12:41:36 PM

I was balancing a 3 blade prop on my dubro balancer and noticed that one blade was higher than the other 2. In other words the tips of 2 blades would  track in the same spot but the 3rd blade at the tip would track 1/8" further. Anyone have this problem?

Title: Re: 3 blades prop
Post by: Lauri Malila on July 29, 2025, 01:20:09 PM

It may be just the imperfections in prop hole ends/balancer cones, the Dubro balancer is not very well made.
Check the tracking when bolted to the engine and if it bothers you, sand the bottom of hub to correct. L

Title: Re: 3 blades prop
Post by: Howard Rush on July 29, 2025, 05:00:58 PM

It can make the prop noisy. 

Title: Re: 3 blades prop
Post by: Matt Neumann on July 30, 2025, 03:39:13 PM

Out of curiosity, what prop?