This MOC is like the little house I did before - unplanned, random and weird (for me). There are a few steampunk creations around, and I have to say that they are intresting, really! And as upgrading and polishing Triffid made me mad, I just had to do sth unusual.
So, a steampunk creation. What will it be? What should it look like? How to do it? What style should it be? I didn't know answers to any of those questions. Full random, that's all.
After making some random mechanism pieces, I decided that the model will be sth like mobile artillery, which uses air-pressured cannon istead of classical powder one. There are modern AP cannons that have loong range, so it would be possible to do this some centuries ago.
To young builders: Take a closer look on water tank (that gray vertical-striped barrel). You won't see it anymore... as this is very old, almost ancient, 4.5 Volt engine. However it is not attached to wheels now, but it would be possible.