But not [truebassB], instead he built his own air pump from first principles (YouTube, embedded below) using PVC pipe. It’s a straightforward design in which the cylinder is a length of pipe ...

[NightHawkInLight] a.k.a. [Ben] recently built an awesome high power air cannon out of PVC pipe. PVC air cannons are great, and everyone should build one of these at some point in their life ...

That brings us to the straight pipe exhaust system. The exhaust of a vehicle serves a few very important purposes: quickly removing harmful post-combustion gasses to make room for incoming air in ...