Probably not, Don. Repitching to a 7150 would only gain me a couple MPH, and I'd rather keep the climb performance vs. going to a 7152. My prop was originally a 7150 and it has already been re-pitched to a 7148. If I undretand correctly, you can only do one re-pitch. So I would have to buy a new prop. That's a lot of money for 2-4 MPH! I'll probably take advantage of the mixture control on the Marvel carb and start seeking higher TAS at altitude!
Best, Dave --- In [email protected], "Donald" <dongen...@...> wrote: > > > > Good to hear all that Dave, glad you are back in the air. Do you forsee a > change in pitch coming up in the future to gain some speed? I am happy with > my 71 by 51 but supposed I would be very happy with it when I go to the 0200 > parts upgrade. > > --- In [email protected], "bigbrownpilot@" <bigbrownpilot@> wrote: > > > > Folks, > > > > Yesterday afternoon was Return to Fly day. I did my preflight and and > > after correcting a problem with the control cable spacer behind the seat, > > Vince signed off the airplane as airworthy and annual complete. I took off > > around 3:30 far a short test hop--twice around the pattern with a low > > approach and a full stop landing. After landing, we checked for leaks and > > checked the oil. Then Vince and I went up for another flight to document > > oil temp, pressure, CHT and EGT readings. It was over 100 degrees by then, > > and we had some high oil temperature readings that corresponded to low oil > > pressure at idle after landing, but I spoke to the engine builder and he's > > convinced that it's due to the high ambient temperature and the need to > > tweak the baffling a bit more. Also, we're still running straight mineral > > oil, so we probably will see some improvement with 50W. Today I took a > > solo flight to check flight characteristics. I did slow flight, power on > > and off stalls, turning departure stalls, and steep turns. It was only 85 > > degrees and the air was fairly smooth, so I could trim it up and see how if > > flew hands off. Flight control rigging seems fine-- hands off with the > > ball centered at 2200 RPM and the wings stay level. No oil temp or > > pressure problems were noted today at the lower temperatures. I had 30 PSI > > at cold idle and a bit more at higher RPM's and 20 PSI at hot idle. Temp > > stayed below 200. CHT was 350 and EGT never went above 1200. On climbout, > > I saw 2400 RPM, and was able to maintain 2525 RPM in level flight and get > > 108 MPH (McCauley 7148 prop). My VVI on climbout at 85 MPH was 750, so I'm > > seeing the performance I expected from the C-85/O-200 STC engine. Today I > > found a radio weak TX/RX problem that appears to be a repeat of a problem > > that the previous owner experienced with the internal antenna connector > > ground (XCOM 760). I'm debating whether to send it in for repair or > > upgrade to an MGL V-10 that can be controlled by the Garmin 396. > > > > Hope to see some of you at Oshkosh! > > > > Best, > > Dave > > >
