My Rotax 582 used to easily redline on take off, climb out, and in level flight, so I simply kept the throttle back a bit to prevent this. I have a ground adjustable prop (wood 3 blade GSC) and so with only a little trouble, I re-pitched it so that it turns exactly 6200 rpm static.
Problem solved - or so I thought until I took it for a test flight. As soon as the plane started moving, the rpm dropped to around 5800 and would only just barely climb out a 500 fpm. (I'm used to closer to 1000) At cruise, full power would only develop 6000 rpm. (although I did gain almost 10 mph at cruise!)
Now obviously this means I need to decrease the pitch of the prop a bit (I'm thinking about 1 degree or so) but the trouble is, why did it turn the proper rmp while static but not while flying? How can I test the pitch if I'm not getting proper results on the ground?
Thanks guys!
Problem solved - or so I thought until I took it for a test flight. As soon as the plane started moving, the rpm dropped to around 5800 and would only just barely climb out a 500 fpm. (I'm used to closer to 1000) At cruise, full power would only develop 6000 rpm. (although I did gain almost 10 mph at cruise!)
Now obviously this means I need to decrease the pitch of the prop a bit (I'm thinking about 1 degree or so) but the trouble is, why did it turn the proper rmp while static but not while flying? How can I test the pitch if I'm not getting proper results on the ground?
Thanks guys!
