Hi. I have 912UL with installed vacuum pump. I'm looking also for simple in flight adjustable propeller with mechanical (not electrical like woodcomp) control mechanism. Unfortunatelly most of system's are taking place of vacuum pump on the engine and can't be installed together. Maybe someone know propeller with can be installed together with vacuum on 912?
I know only woodcomp SR2/3000 props but they are really problematic and I don't want to go in thins direction.
Are you dead set against electric ? There are a couple electric systems that come to mind. Ivoprop inflight adjustable and Airmaster propellers. Do a google search on those.
I have the Ivoprop medium 3 blade inflight adjustable on a 912 ULS, I like it. I would really like to try the Airmaster 3 blade using whirlwind blades , just can't come up with the extra money or justify it, with already having a decent propeller system.