With the cylinder only being less than half a litre each I've just had an idea
My 12v plug in the car tyre pump goes over 125psi, so I could cut tyre valve thingy off and put it striaght to the valve thingy
I've found a compressor with a starting bid .99p
looks like I just need a roof now
Youtube channel of mods an track pics
http://www.youtube.com/user/busternorris?feature=mhum
Website: http://www.roughluckracing.com/ MG Rover Mobile Repairs Nationwide and Western Europe