RE: Wren 54
Strykaas,
When the MW-54 is assembled, the inlet cone is adjusted so that it is concentric with the compressor. This adjustment is just about the only critical step in the assembly. The instructions give good guidance on this and it is not a big deal to correct if you get it wrong the first time. I can also say that the folks at Wren couldn't be more helpful. I am looking forward to building the MW-54 Super Sport when it becomes available this spring.
I have never measured the thrust of my engine, but it sure hauls my 18 1/2 (dry weight) pound Reaper around.
Happy Holidays to All,
John