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Old 09-30-2007, 04:10 PM   #1
Army Dad
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Default Balancing

I have built a stand to balance my planes on but I have a couple of questions. Do you balance with the plane upside down on the stand or right side up, when I put my newest plane on the stand right side up it appears to balance just right but if I try it upside down it shows that it is pretty tail heavy, which one is right. This plane has a FFF wing, it is made of a single sheet of FFF that has been formed to an airfoil shape and has a couple of FFF ribs on the bottom to help it keep its shape. Let me know what you think, I dont know what to do.

Thanks Rick

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Old 09-30-2007, 05:01 PM   #2
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I think you would want to balance a high wing right side up and a low wing upside down. At least thats how I do it.

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Old 09-30-2007, 07:25 PM   #3
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You didn't mention if the plane is high, mid, or low wing, nor what type of balancing jig you are using.

However, a plane should balance the same right side up or up side down. Just turning the plane over doesn't shift any weight. The location of the CG point might be located at a different place on the bottom of the wing vs the top, but the CG would be the same. This discrepancy could be due to the angle of attack of the wing.

Got pictures?
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Old 09-30-2007, 08:34 PM   #4
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Bill, Here is a picture of the plane and the balancing stand I made.Click image for larger version

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Old 09-30-2007, 08:47 PM   #5
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I think you will be ok. There would be no way of balancing that plane upside down on your stand, it would be too top heavy. Your stand and plane both look great by the way. When is the maiden? I know it won't be today with these winds.

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Old 09-30-2007, 09:19 PM   #6
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James,

First flight was this am, I thought the wind was low enough that I could get some stick time before it realy started to blow. Boy was I wrong this plane is a REAL FLOATER I had my hands full from the time I let it go untill I finaly got it back on the ground. Thanks for the input on my balcncing question I was sure enough that I was ok that I went ahead and flew it, just wanted a second openion.

Thanks Rick

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Old 09-30-2007, 09:23 PM   #7
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Glad to hear it went ok for ya. I was going to fly this morning but I was skeered.

Will you make it out to Hatbox field Oct 12 or 13th for the Fly-In?

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Old 09-30-2007, 09:37 PM   #8
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I'll most likley be there both days we only live about 6 blocks from the TRAMPS field. We should try to get togeather on one of the days.

Rick

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