N62588 Phase 1 Flight Testing

[svyolo]

Yeah I have a 1.5" lip set at 30 degrees.

[Steve W]

IMG_1952.jpg LoopIMG_1948.jpg You might need 2.5-3” lip and more angle.
And check your timing. If it’s at 25*, maybe back it off to 20*. I know that was a fix for some of the angle valve engines in some airframes

[svyolo]

Angle valves are normally set at 20, but it might also work on mine. I have EFI/EI and can adjust the timing per rpm and MP. I may try dropping the high MP down to 20. I heard it makes little difference in power at very high power.

[Bcone1381]

The Patrol has been down a month due to service and work. The two issues wer of course hot cowl, but also starter kick back.

I have a lot to write, but just thought I'd share real quick some data. I flew yesterday and learned that the air temp under the floor is warm. The tunnel heats it up. I measure the bulkhead temp as my air temp indicator. It reached 107F. The fuel line temp entering the "basement" was ~ 83f and it exited ~96f rise thru this area was 13f @ about 9 gph and rises to 15F @5 gph.

I'll be insulating those lines and the Gascolator today.

I also got Cowl Pressure data with my unmodified cowl. Now I can make changes and see the change.

[rodsmith]

The Patrol has been down a month due to service and work. The two issues wer of course hot cowl, but also starter kick back.

I have a lot to write, but just thought I'd share real quick some data. I flew yesterday and learned that the air temp under the floor is warm. The tunnel heats it up. I measure the bulkhead temp as my air temp indicator. It reached 107F. The fuel line temp entering the "basement" was ~ 83f and it exited ~96f rise thru this area was 13f @ about 9 gph and rises to 15F @5 gph.

I'll be insulating those lines and the Gascolator today.

I also got Cowl Pressure data with my unmodified cowl. Now I can make changes and see the change.

I insulated the top and sides of the tunnel area with the same 5/8" closed cell foam I used on the inside of the firewall. I didn't want the heat radiating up through the floor, didn't consider the fuel line traversing that area.