I recently purchased an Ohio RC Ultimate bipe ... (60 inch wings) and have recovered it and have it set up... NOW I NEED TO BALANCE IT...!!!

HOW ??? I don't know where the CG is... but if I did... I still don't know how to balance a bipe.... HELP...!!

Thanks

Larry

When you find out where the CG should be rig up a sling to balance the model. See the thread at http://www.rcuniverse.com/forum/m_17...tm.htm#1715012

I have a general "Rule of thumb" for bipes...

If you pick it up from behind the center of the top wing (As if you were going to carry it) it should hang about 10 degrees nose down.

There's nothing scientific about this of course, but it is an easy way to get you in the ballpark. This should get you to a point where it's safe to fly. Then once you fly it, you can adjust the CG as necessary.

A sling works great for balancing a biplane. See the thread at http://www.rcuniverse.com/forum/m_17...tm.htm#1715012

This is from Lennon on Bipes, and has always worked for me. The balancer is called a Vanessa. A plumb bob is suspended from the same point as the aircraft, and points directly at the balance point. A monoplane is shown, but the same works for the biplanes that I have built.

Les

I don't know why it is taking two tries to get photos on, but we will try again.

Les has the right idea. I usually measure the total distance from the leading edge of the top wing to the trailing edge of the lower wing and use about 30% of that distance for a starting point. This is distance taken from two vertical lines not a total of the chord of both wings. Try it as the balance point on the top wing. First flight will tell you if it's close to being right. Make adjustments as necessary.

hi

a good starting point would be to put wings on plane and measure from the leading edge of the top wing to the trailing edge of the bottom wing and balance at 25% of this distance. this will put you at a good starting point with maybe minor adjustment and you get the plane trimmed.

good luck and happy flying

pt19 flyer