MarkChristopher
Member
My RV-7a is only 20 hours old and after doing cruise speed testing I believe that I may not be producing proper engine power.
Here are the test conditions:
- New Superior IO-360, Hartzell CS prop
- 8000 MSL, 50 deg F OAT
- Installed nose wheel pant and leg fairing - no main pants or leg farings
- Running 100 deg ROP, 100LL
Here are the results:
WOT - 22.5 MP, 2620 RPM, 11.6 GPH, 129kts IAS, 148kts TAS
70% - 22.5 MP, 2500 RPM, 10.8 GPH, 127kts IAS, 147kts TAS
65% - 22.4 MP, 2300 RPM, 10.0 GPR, 124kts IAS, 142kts TAS
55% - 19.2 MP, 2300 RPM, 8.0 GPR, 113kts IAS, 130kts TAS
I know there is a speed gain with the wheel pants and leg fairings but it seems like I'm a long way off the published numbers from VANS. Do I have an issue and if so, where should I start looking?
Thanks!
Here are the test conditions:
- New Superior IO-360, Hartzell CS prop
- 8000 MSL, 50 deg F OAT
- Installed nose wheel pant and leg fairing - no main pants or leg farings
- Running 100 deg ROP, 100LL
Here are the results:
WOT - 22.5 MP, 2620 RPM, 11.6 GPH, 129kts IAS, 148kts TAS
70% - 22.5 MP, 2500 RPM, 10.8 GPH, 127kts IAS, 147kts TAS
65% - 22.4 MP, 2300 RPM, 10.0 GPR, 124kts IAS, 142kts TAS
55% - 19.2 MP, 2300 RPM, 8.0 GPR, 113kts IAS, 130kts TAS
I know there is a speed gain with the wheel pants and leg fairings but it seems like I'm a long way off the published numbers from VANS. Do I have an issue and if so, where should I start looking?
Thanks!