RE: Skymaster F4 pipe and wet start
Hi Eddie
The pic you refer, is before I scuffed it with scotch-brite. Now it as a smother surface. The pipe is twin walled pipe from SM. Attached there's another pic.
The plane is a F4 and in this plane the pipe ends before the tail plane, heating it up a bit. Next time I'll start the turbine, I'll measure the temperature in the elevator.
Regards
Nuno