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

Stainless steel has extreme galling properties hopefully they can get it right otherwise stainless steel is gonna be a complete failure.
There’s no reason to reinvent the wheel here.
They need to use a Heat treat compatible on the cam and lifter. Cheapness is the cause of all these issues with these engines. No piston pin protection from galling into the cylinders is proof!
 Piston pin retainers or Teflon disc like I have been suggesting is a very effective protection!!!
To the best of my knowledge None of these engines come with any form of protection between the piston pin and the cylinder walls.
It’s like having a built in ticking time bomb that will eventually ruin the engine the more you run it.