Now I present the Fowler B5 model, it's free and can be downloaded here: http://www.jbmodels.jb-art.eu/pojazdy.html
It's some kind of steam engine vehicule used by England in South Africa, here are some links to the real vehicule:
http://director.io/tanquesybli…1gm/fowlerb5/fowlerb5.htm
http://www.landships.freeservers.com/fowler_b5_armtract.htm
http://15mmvsf.bagofmice.com/vsf/insper.html
Hope you enjoy it.
Cheers.
Edwin.