Topic: Horn placement on top hinged ailerons

All,

The Glens Extra uses top/film hinged ailerons. I've only ever built mid hinged with cyano hinges, where the holes on the control horn are directly over the hinge line. Does the horn placement differ any from being directly over the hinge line, for top hinges. As I see it, with a 4mm chamfer, the foot of the horn would over hang the lower edge of the aileron, to get the holes to line up.

Answers quick please guys

Depends what you want to achieve.

To give equal defelction up and down the holes should line up with the hinge line. This means the horn should rake forward.

If you have seperate servos in each aileron and a computer tx you can probably adjust the ailerons to move the required amount.


Tad

Same on the smaller 58 inch one Andy. You just have to move the hinge towards the l\e edge a bit so that the holes in the horn line up with the c\l of the hinge. As you say it might well mean that the mounting holes for the hinge are too far forward to go into the the "meaty" wood of the aileron, in which case either drill another hole in the horn a bit further back, or use a different horn. I think ours fitted just about OK with a bit of jiggling, but you've really got to get the horn holes in line with the c\l of the hinge otherwise you introduce differential I think.

The overhang itself shouldn't cause any fouling. You'd need huge movement for the overhanging horn to hit the t\e.

just place em so the holes are on the same ctr line as the hinge line.