Originally Posted by enginesjohn

Thanks for your comment, I'm so glad you like it.
As for your question,
I really do not know. I have limited knowledge of mechanics.
I think it depends on the weight of the car.
The strength of the motor depends on the diameter of the cylinder and the pressure of the steam.
My engine has two cylinders. Diameter 20mm. The boiler produces steam at 1.5 kg / cm square. It could withstand double the pressure without problem. Pressure tests were performed at 13 kg. Per cm. square.
The approximate force per cylinder = 3 kg.
I'm sorry I can not help you better. If you send me the links of the engines I see them and I tell you that I think.