I am yet to build my first anything on a lathe or milling machine, but am a super technically minded young individual driven by mechanics and general engineering. At the moment i am busy designing out a long term project for one day when i have the experience and money to invest in such a project. The question i have is, has anybody considered using a more modernized design for a piston over the good old straight long cylinder? something along the lines of this. . . This one is from an F1 car but the concept is there. So has anybody tried one of these for a scaled IC or even considered doing this before?