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Old Feb 06, 2006, 09:24 AM
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cheap prop balancer?

anyone have any ideas about a cheap prop balancer? or making one from scratch?
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Old Feb 06, 2006, 09:34 AM
Deletedfor proving Nauga wrong
Joined Mar 2005
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find an appropriate diameter piece of rod for the hole in the center of the prop.

push the rod into the prop.... set on 2 water glasses wit the prop parallel to the ground.

heavy blade will drop.

The fancy ballancers are just that.... fancy.
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Old Feb 06, 2006, 02:42 PM
Are you one of these
rcboatnut's Avatar
loveland colorado
Joined Nov 2003
399 Posts
I think greatplanes has a magnetic prop balancer that is great, they are probably cheap or you could take the idea and make your own.
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Old Feb 06, 2006, 03:15 PM
aka: A.Roger Wilfong
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Novi, Michigan, United States
Joined Jan 2001
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The "Great Planes Fingertip Prop Balancer" http://www2.towerhobbies.com/cgi-bin...?&I=LXK247&P=7 is cheap ($4.29) and works pretty well. You can do the glass bit with it, or if you want, you can make it into a magnetic balancer. The trick is to have really low friction pivot points.

I use one of the Top Flight magnetic balancers ($19.99).

- Roger
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Old Feb 06, 2006, 09:16 PM
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Winnipeg, MB Canada
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Two magnets gooped to two long chunks of wood that are then clamped to the edge of your workbench, magnets facing each other. Place a hand held balancer, bought at the LHS for two/three dollars between the magnets with a tad of clearance and you have a balancer much superior to the commercially available variety. It'll handle props up into the 20" range which the commercial type won't because of the weight. Tex.
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Old Feb 07, 2006, 11:23 PM
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Depending on the strength of your magnets....
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Old Feb 08, 2006, 04:16 AM
It must have a machinegun
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Perth, Western Australia
Joined Sep 2004
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To balance a small prop, I put a couple of rare earth magnets in the jaws of a vice and used a drill bit as a shaft. I just closed the jaws until there was minimal clearance. It would work better if I had a sharper point on the shaft.
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Old Feb 08, 2006, 04:41 AM
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Dublin, Ireland
Joined Mar 2002
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Cradle: 4 razor blades stuck into a block of balsa to make 2 vee shaped cradles.
This is an almost friction free mount for any gimbal you care to make....
I challenge anyone to show a magnetic cradle is better.

To make the gimbal which holds the prop use a piece of spare hardwood spar material - spruce or pine, pre drilled 1mm then jammed onto a drill bit, and turned down lathe-fashion with a file or sandpapered bar into 2 cones (with a hole through)
the hole will be automatically centred true once the turning - sanding process is done.

Finally push your wood cones on a bit of piano wire, (or any pin the right diameter), and rest across the cradle.

Done
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