RV-9 IO-360 Performance

When I was trying to choose my RV-9 engine I did not find performance numbers for an IO-360 RV-9. I went that route anyway and am now posting my performance numbers.

RV-9 slider
empty weight 1088 with full classic aero interior
empty cg 78.75 - (a little aft cg)
eci kit engine IO-360
airflow performance fuel injection
one magneto, one lightspeed electronic ignition
catto 3 blade 66x74 prop.
standard cowl and baffles
All fairings installed. fairings-etc intersection fairings.
Unpainted - fairings primed but not completely without pinholes
Tested weight approximately 1430lbs

Last night the wind was almost perfectly calm at 3500 ft, ceiling prevented me from going higher so I couldn't get WOT speed.

............................ Vg 1 Track 1 Vg 2 Track 2 Vg 3 Track 3 Vwind Wind dir Vtrue
.. IAS Temp Alt TAS (kts) (deg) (kts) (deg) (kts) (deg) (kts) (deg) (kts) mph
2 066 066 3500 071 071 244 072 315 072 022 1.2 146.1 070.8 081.47559
3 162 066 3500 174 171 264 171 354 173 107 1.2 309.0 171.9 197.64686
4 137 066 3500 147 141 019 141 085 145 145 4.5 052.0 144.8 166.55825
5 111 066 3500 119 120 086 120 345 121 226 0.6 035.5 120.4 138.4524
6 112 066 3500 120 120 240 122 133 122 020 1.3 256.5 121.3 139.46365

Stall speeds match van's published numbers.

Speeds computed using the spreadsheets found here: http://www.ntps.edu/information/downloads

I'm happy I went this route.

Todd Neidinger
RV-9 Flying

Any engine/fuel flow data?

Todd, except for canopy and possibly dual electronic ignition, your airplane appears to be a clone of the one I hope to complete. Do you have any engine data for any of the speeds posted (RPM, MAP, fuel flow, temperatures, etc).

Have you posted any pictures of your plane?

Sorry I didn't collect exact engine data. In general all chts where less than 360, oil temp less than 195, egts 1320 or less. All tests with the exception of the high speed where done lean of peak. The high speed was done at 2700 burning approx. 14 gph.

Todd Neidinger
RV-9 Flying