Re: Guillows ME 109 C/L Build

bsadonkill Wed Apr 10, 2024 1:33 pm

Very interested in your build. I built a 400 series Guillow's 109 for .020 free flight. It worked out well. I used the extended wing with the dihedral suggested for the RC model. I want to try the Zero as a control line model. Problem is I don't know much about control line. I see that you moved the bell crank to the bottom of the wing. Is this too make sure the bell crank is under the center of gravity?

akjgardner Wed Apr 10, 2024 3:32 pm

bsadonkill wrote:Very interested in your build. I built a 400 series Guillow's 109 for .020 free flight. It worked out well. I used the extended wing with the dihedral suggested for the RC model. I want to try the Zero as a control line model. Problem is I don't know much about control line. I see that you moved the bell crank to the bottom of the wing. Is this too make sure the bell crank is under the center of gravity?

I would like to see a picture of your 109 . The Guillows design has the control line external of the wing . Since I routed the lines through the wing , I had to lower the bell crank

bsadonkill Thu Apr 11, 2024 4:00 am

A couple of pictures of my free flight Guillow's 109. I was asking about your lowering of the bell crank location because of an article I read. It was a Flying Models magazine article from Dec 1950. It talked about U-Control installation. It said that the bell crank must be behind the balance point. But it also said it must be at or slightly below the center of gravity. I thought maybe you lowered yours for that reason.

akjgardner Thu Apr 11, 2024 4:14 am

bsadonkill wrote:A couple of pictures of my free flight Guillow's 109. I was asking about your lowering of the bell crank location because of an article I read. It was a Flying Models magazine article from Dec 1950. It talked about U-Control installation. It said that the bell crank must be behind the balance point. But it also said it must be at or slightly below the center of gravity. I thought maybe you lowered yours for that reason.

Awesome job on your 109

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