Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I don't have one of the H75 4s.

I will say that the internal machining is amazing for the money you pay. 

If you want one made from Coles Power Models casting kits and plans you will pay a good machinist 6,000 to 7,000.

Slightly scaled down further by Jin, it is a bargain. Jin has been a leader in making affordable model gas and steam engines.

They may not be perfect all over but you will be very hard pressed find better for the money.
I have a friend that has the H74 and H75 and he loves them both. He also has a machinist built Holt from a good builder. He said Jin's engines are easier to run and more reliable.

Have you asked Jin about the possibility of getting another fan with the blades twisted the other way?

Gil