> Do you feel mounting the servo in the elevator would adversely affect > mass balance and if mounted in the stab you would use less ballast near the > tail?
I never mass balanced the tail, but have never tested past 215 mph IAS. ?Will it affect the balance? ?No doubt. ?Will it affect it adversely? ?I don't know. ?Do I plan to mass balance the tail? ?No. ?Has this configuration been used before? ?Yes. ?Does it require flight testing? ?Yes. ?-Jeff Ray Allen Servos: http://www.aircraftspruce.com/catalog/elpages/ractrimservos.php?clickkey=53667 -Jeff Scott Los Alamos, NM > ----- Original Message ----- > > I would appreciate the site info for the Ray Allen trim servo... Thanks...jw > Joe. E. Wallace > jwallacep51 at gmail.com > > > > On Mar 24, 2013, at 5:00 PM, Jeff Scott <jscott.planes at gmx.com> wrote: > > > When I had the original tail on my KR, the MAC trim servo was mounted in > > the horizontal stab with a short nyrod passing through both spars to the > > trim tab. That worked reasonably well. I tried using a spring biasing trim > > when I built the larger tail for my KR in 2005. That was never > > satisfactory. I have the tail off my KR installing a Ray Allen trim servo > > now