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Shop Tip: Balancing your Propeller

Shop Tip: Balancing your Propeller

When operating RC airplanes, properly balanced propellers are very important. Having a balanced prop helps prevent excessive vibration which can cause electrical connections to loosen, fuel in your gas tank to foam up, and can even cause structural damage.  Balancing your propeller helps avoid all these problems and it is very easy to do by following this two-step procedure.

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1.  To balance blades, place the mounted prop on the balancer with the blades in a horizontal position.  Remove material from the heavy side (the side that falls when placed horizontally), or add to the lighter side until prop stays in a balanced horizontal position.

 

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2.  To balance the prop hub, place the mounted prop on the balancer in a vertical position.  Remove material from the heavy side (side that falls when placed vertically) or add to the lighter side until prop stays in a balanced vertical position.

 

Tips for Removing or Adding Weight

To remove material from wood or plastic props, scrape or sand material from the backside of the blade.

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To add material use drops of CA glue, epoxy or “dope” (wood props).  Also, light coats of these adhesives work as well.

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That’s it. Balancing a propeller is very easy and it pays big dividends by making your model last longer and operate more smoothly.

Safety note: Don’t try to repair a broken or badly cracked propeller.

 

Updated: April 25, 2017 — 10:49 AM
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4 Comments

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  1. The prop is ideally balanced when it will not move in ANY position it is placed in. To be balanced horizontally and vertically, the hub needs balancing also. This would be the best balance for less vibration.
    To lengthy to mention here but for a future tips or search the web.

    1. which is the expected outcome of the 2 part process, but should be checked.

  2. As,always, constructive & important, proceedures, that makes, a needed, answer,
    to R/C model engine performance and reliability. These monthly tips, along with
    other, helpful issues, is one of the mainstays, of my subscription, to M.A.N. a
    rational , investment, along with, other informative articles, that have graced
    the pages of M.A.N. since, it’s first flight, back in 1929. Keep on flying, and
    many happy landings, with a few bounces, now & then.

  3. Thank you for these tips, I do appreciate it…keep the tips coming…I personally consider them very helpful and could not thank you and other modelers for their experience and guidance enough…it has saved me time, money, and a lot less chance of a loss of one of my aircraft that I(and other aircraft builders on their own) that I (we) work so hard to save for and work on! When I see another builders aircraft crash, I compare that to throwing down a BEAUTIFUL piece of art being destroyed! So thank you again to you and everyone who provide all these tips so that our art isn’t destroyed!!!

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