Is this a homebuilt turbine? How about that little jewel you had on here earlier this year, built any more of those? Your ducting looks like carbon fiber in the rear pic. I have an article with a couple of pics showing Dainty's butterfly valves in the wings-actually it was a one page of MAN's last page they do each month. I have a set of three views I had blown up sometime back to a 1"to 1' thinking one day I'd attempt to build one . Good luck, keep us posted!