Nice job on the Nano X -- I purchased one of the pipes to compare to the pipes I make. I make the pipes from .010 up to .09 - So far I haven't been able to get them up to that kind of speed though I have done well with .40/.45 sized pipes. the smaller .010 and .020 pipes are more for looks but they do make very effective mufflers. I've heard the ball socket fails above 25,000 but I've never seen it. I'm testing on Norvels now but plan to get back to TD .051'soon . My test planes are a bit larger around 24 inches and 200 squares. Good Luck and keep up the interesting work .