In my aircraft and particular servo mounting, I need a slightly longer pushrod than the one supplied in the kit. Can I get custom pushrods from Dynon?
Dynon doesn’t sell pushrods individually or in custom sizes outside of the kits. However, here are the specs: • 6063-T6 aluminum tubing (6061 would work fine, but the size we need for our rod ends is harder to source) • O.D. 0.375″ (3/8″) fairly common. The 8 foot length costs around $6 from McMaster Carr. • I.D. can be anything LESS than .213″ (a solid bar would be fine as well). The reasoning for the .213″ is: A) minimum wall thickness for tubing strength. B) That happens to be the drill diameter required for a 1/4-28 tap. • Both ends need to be tapped for the spherical rod end bearings: we use 1/4-28 threads for ours. It could be whatever you need it to be for different rod end bearings though. • Drill the ends of each tube to .213″ I.D. at a depth of 1″ then tap.
