CS Prop - Not Reaching Max 2,700 RPM - Page 2

rickrv8 · #11 08-26-2007, 12:09 PM

Okay Rob, now that you're the expert I'm next. Where were you today anyway?

N908RV · #12 08-26-2007, 07:32 PM

I finally have a chance at actually catching your 200 hp beast now....

Sorry I missed you today - was out doing demolition work on a friend's home in Balto. I have sore muscles that I never knew existed.

RV8N · #13 10-15-2007, 07:46 PM

Maybe y'all can give me some tips also. I also have been flying for several years and am not getting 2700 rpm on take-off. When I first push the throttle forward, the engine will go to 2700 but then drops to around 2600 and finally settles at about 2610. It will go no higher during flight.

I have adjusted the governor set screw several times and it has made no difference. I finally adjusted the stop nut on the prop with no change. My governor was new from Van's, Woodward 210776, and there was no manual with it... just the governor in a box.

I had to remove the 6 (?) screws and turn the outer plate to get the control arm clocked in the right direction. I'm now wondering if I did something wrong. Anybody have a manual or know enough about Woodward's to give advice?

Thanks, Karl

Canadian_JOY · #14 08-28-2017, 11:09 PM

Resurrecting this very old thread in hopes there are still some folks around who remember how to adjust their Jihostroj (a.k.a. PCU5000) governor.

I'm at a point where I think I need to index the control arm one spline toward "high RPM" since the low pitch adjustment screw would need to be backed all the way out in order to get the additional 240RPM I need to get to 2700. Backing the screw all the way out and letting the control arm bump against the boss seems like a bad idea and in fact the Jihostroj manual indicates the screw must project at least 1mm.

Has anybody re-indexed the control arm? If so, do you happen to remember approximately how much RPM change is associated with moving the control arm one spline on the shaft?