Hi, I'm not an engineer but I do dabble in working out solutions to engineering problems in the manufacturing environment. I am working on a project/idea at present and I need to be able to calculate the height that a single piston and cylinder, internally combusting, can project a 100kg weight into the air. The conrod would remain aligned with the pistons linear movement, just like a ram, in other words, the reciprocating motion of the piston would not be converted to rotation. I am guessing that the distance would vary on the efficiency of the combustion system but there must be a sort of average that I could use to work from. The 2 variables that I can imagine effecting this calculation are the piston diameter and the length of stroke,but I'm not an expert as I already stated. I'm sure that someone out there can get the ball rolling for me and once it is, I can ask more questions. Thanks for reading and if you do, participating. Tim.