When the United States entered WW1 it had great manufacturing capability but no tank designs to build. Holt Manufacturing, now known as Caterpillar Inc, had been making huge wheeled agricultural tractors for years. So they started with one of their wheel steam tractors and added guns and armor. In the Army’s first test, it got stuck. Further testing was also disappointing and the concept was dropped. The Aberdeen Proving grounds collection card and labeled photos state that the drive wheels were in the rear and that it was armed with 2 6-pounder guns and two machine guns.
This is another interesting kit from Vargas Scale Models . It is 1:35 scale and 3D printed in resin. The detail is good and the parts count is exceptionally low. It comes with both the 6-pounders described in the Aberdeen documents, and a 75mm howitzer that some claim as the armament - take your pick. I built mine with the 6-pounders.
This thing is a beast. The wheels are about 8 (2.4m) feet tall.
The front steering wheel did not work well on the simulated no-mans-land test track. But it was fun to get that rusty, paint worn off look.
The LifeColor Dust and Rust paints applied in layers worked really well for the wheels.
I am anxiously awaiting the next unusual WW1 / Interwar subject from Vargas Scale Models.