Hi Kate, I also have a 112A Hot Shot... When I purchased the plane the current AP had the RPMs set low at 2560RPM max... Therefore, the plane was slow to lift off and climb was poor 300-500fpm. After speaking with Carl I had rpm adjusted to 2700RPM... It changed everything!!!
My setup: Similar to Short Field Takeoff
1. Hold brakes
2. 10 degrees Flaps
3. Prop full forward producing 2700RPMs
4. Full Throttle and Fuel Pump ON
5. Manifold Pressure 30' inches.
6. Let off brakes and ground roll to 65-70kts rotate.
7. Climb at 75-80kts.
8. Retract gear as recommended.
9. Retract flaps after Im in positive climb and 700ft AGL or when safe.
10. Manifold Pressure 30' for 3 minutes then back to 28.5 inches and 2700RPMs all the way to altitude.
At Flight Level
Close Cowl flaps
Fuel Pump OFF
Cruise Set-Up 2450RPM and 25.5 MP this is 73%HP on my JPI 830, burning 10.6-11.5gph.
This will give me approximately 900fpm to 1000fpm (sometimes I get 1100fpm) depending on how much fuel and payload. Usually, I am flying alone I'm 205lbs or with one passenger 115lbs.. 30lbs luggage... I like to fly with 48-50 gallons only. This is fine for most of my missions.
The major changes for performance and take-off was once I changed the RPM's to 2700. The plane became totally a different plane to fly. It has great power, performance and economy. Plus, very comfortable. Hope this helps you... I was in the same quandary as you. Enjoy flying...
Darren Goodman
N1383J 1976 112A Hot Shot Ser #383
My setup: Similar to Short Field Takeoff
1. Hold brakes
2. 10 degrees Flaps
3. Prop full forward producing 2700RPMs
4. Full Throttle and Fuel Pump ON
5. Manifold Pressure 30' inches.
6. Let off brakes and ground roll to 65-70kts rotate.
7. Climb at 75-80kts.
8. Retract gear as recommended.
9. Retract flaps after Im in positive climb and 700ft AGL or when safe.
10. Manifold Pressure 30' for 3 minutes then back to 28.5 inches and 2700RPMs all the way to altitude.
At Flight Level
Close Cowl flaps
Fuel Pump OFF
Cruise Set-Up 2450RPM and 25.5 MP this is 73%HP on my JPI 830, burning 10.6-11.5gph.
This will give me approximately 900fpm to 1000fpm (sometimes I get 1100fpm) depending on how much fuel and payload. Usually, I am flying alone I'm 205lbs or with one passenger 115lbs.. 30lbs luggage... I like to fly with 48-50 gallons only. This is fine for most of my missions.
The major changes for performance and take-off was once I changed the RPM's to 2700. The plane became totally a different plane to fly. It has great power, performance and economy. Plus, very comfortable. Hope this helps you... I was in the same quandary as you. Enjoy flying...
Darren Goodman
N1383J 1976 112A Hot Shot Ser #383