What pressure are the push fittings usually rated to? The plan was to make the spike bot from MDF. We are not massively fussed about weight as its never going to be for competition. As it will all be fixed I was going to get parts you have to bolt together rather than push fit parts.

Also, thanks to Kane's talk at the Robochallenge awards we know his list of little tricks to get the most out of a pneumatic system, like making sure the flow its straight just to name one.

And I know what the armour is Gary. 1.5mm Grade 6 on the sides and back with 3mm Grade 5 on the front. I still think 250kg of force is enough to do something to it. (250kg as we will push ourselves back as we fire, halving the force)