CAVU Mark
Well Known Member
I bought a 22 Y/O RV-3 with a O-320 A1A. The plane has flown regularly but I can't say the same about maintenance. I am now nearing the end of the detailed condition inspection when I discovered a few things:
1) The original prop was a 62" pitch unknown prop which did fly the airplane. I also received a 68x72 Ed Sterba prop which I just had Ed rehab and placed on the plane. Ed said it should turn around 2300 RPM, however I get 2500 RPM. Note: tach accuracy is not verified but I think it is close. Any thoughts on what this prop should do on this engine? My plan is to fly it and watch the RPM so it does not over speed.
2) The spinner is very close to the cowl. In fact there are gouges where it hit. My EAA pals suggest adding 2 .109 thick washers to the engine mount to move the engine forward. The conical mount has a number of washers in place already... ranging from 0 to 2 on the different mounts. Any comments on moving it forward with more washers?
I am looking forward to flying this plane and will do so as soon as I am confident in its integrity. Thanks.
1) The original prop was a 62" pitch unknown prop which did fly the airplane. I also received a 68x72 Ed Sterba prop which I just had Ed rehab and placed on the plane. Ed said it should turn around 2300 RPM, however I get 2500 RPM. Note: tach accuracy is not verified but I think it is close. Any thoughts on what this prop should do on this engine? My plan is to fly it and watch the RPM so it does not over speed.
2) The spinner is very close to the cowl. In fact there are gouges where it hit. My EAA pals suggest adding 2 .109 thick washers to the engine mount to move the engine forward. The conical mount has a number of washers in place already... ranging from 0 to 2 on the different mounts. Any comments on moving it forward with more washers?
I am looking forward to flying this plane and will do so as soon as I am confident in its integrity. Thanks.
Last edited: