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Giant Scale Aircraft Discuss Giant RC Scale Aircraft.

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Old 05-14-2006, 08:56 AM   #1
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OK what do you guys use to check the balance on your giant scale aircraft?

Do you just mark the CG range and then have one guy on each wingtip pick up the bird with one finger to check the balance or have you come up sith some sort of Giant Scale balancer like the Carl Goldberg or Great Planes balancers for smaller models?

Lets here and maybe see some pictures or drawings of what you have rigged up.
Jim Daly
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Old 05-14-2006, 10:44 AM   #2
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Here Jim, this one looks like a good one!

This is the best idea I've seen. One man operation, and you can shuffle stuff around while it's on the "balancer"
Michael Gyger
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Old 05-14-2006, 10:56 AM   #3
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Here is a lengthy discusion on a different site
Imac # 4751
Speedway and Hobby
PTA Hobbies
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Old 05-14-2006, 02:02 PM   #4
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Jim,the fella that has built my large planes has made a somewhat similar setup as the Gr. Planes balancer(His was built long before Gr.Planes come out with theirs)...Then we set the plane and balancer up on a table or tables depending how large and setup the balancer so when you slide it under it just picks the plane off the table....It is built with ready rod so he can adjust it for different width fuselages.....Wish I had some pics for you.
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Old 05-15-2006, 07:22 PM   #5
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I have a sling affair that I hang from the ceiling. Have plans and can mail, they are not in my data base. You basically suspend the plane by either putting rope around the wings or the fuselage, set the plane in level flight attitude and drop a plumb which will point to where the CG currently is.

I usually put a strip of masking tape along the wing chord and mark the recommended forward and aft CG. If I am within range, it's a good place to start flying. If not in range then add the appropriate weight fore or aft until within range.

I have done everything from a 7 ounce foamy to my 27% Patty Wagstaff and it has never failed to be accurate every time. 20+ personal planes and some friends. I will be balancing a 1/3rd Balsa USA Sopwith Pup in my garage the same way this weekend.

You can't argue with psychics and gravity.
John Kovats

aka Johnny Versatile

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Hespeler Model Aviators Inc.
Cambridge Float Flyers

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Old 05-15-2006, 07:37 PM   #6
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Been using humans fingers for years.. works great and free
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Old 05-15-2006, 08:22 PM   #7
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balancing big birds

Good ideas. Just wondering if you have an easy way to check lateral balance on big birds?
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