ZK-LCM
Member
I am nearly finished my RV6 which has a D100, D120 & a Dynon Autopilot . This has been a very slow project, way down in new Zealand, & I installed the Dynon AP hardware approx. 6 years ago to Dynon document 101046-001 Rev D. Page 7 of said document specifies that the Aileron servo is 5.875" aft of the Fuselage frame web. The drg isn't clear exactly which face of the frame this 5.875" dimension applies to & I see that this drg has been eliminated from later versions of the document.
Having only recently fitted the wings and aileron pushrods I found that the pushrod outer bolt rubbed against the aileron pushrod at full aft & RH stick.
Hence I moved the servo approx 0.25" further aft, which gives me a min clearance between pushrods of 0.25" over a wide range of travel.
Unfortunately this also results in a pushrod misalignment of approx. 10.4 degrees at full aft & RH stick travel. See photo.
Does Dynon have any figures for the maximum misalignment that these pushrods are allowed? My experience is that they are designed for about + 7.5 degrees.
Also, I believe that my elevator pushrod is too short, being 4.0". Dynon's instn drg that I worked to shows the overall pushrod length as 6.0" center to center, which agrees with my measurements. But IMHO that leaves only 0.5" of thread engaged at each end. That may well be satisfactory but i would prefer 3/4" of thread engagement at each end, i.e. a 4.5" to 5" long pushrod. Your feedback would be highly appreciated Thank you.
Having only recently fitted the wings and aileron pushrods I found that the pushrod outer bolt rubbed against the aileron pushrod at full aft & RH stick.
Hence I moved the servo approx 0.25" further aft, which gives me a min clearance between pushrods of 0.25" over a wide range of travel.
Unfortunately this also results in a pushrod misalignment of approx. 10.4 degrees at full aft & RH stick travel. See photo.
Does Dynon have any figures for the maximum misalignment that these pushrods are allowed? My experience is that they are designed for about + 7.5 degrees.
Also, I believe that my elevator pushrod is too short, being 4.0". Dynon's instn drg that I worked to shows the overall pushrod length as 6.0" center to center, which agrees with my measurements. But IMHO that leaves only 0.5" of thread engaged at each end. That may well be satisfactory but i would prefer 3/4" of thread engagement at each end, i.e. a 4.5" to 5" long pushrod. Your feedback would be highly appreciated Thank you.