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

Other than air leaks try adjusting the displacor position
When adjusted correctly it should just not touch the power piston
The displacors rod should have a lock nut at the top bearing of the bow shaped thingy ma bob this should allow for a bit of adjustment
Not sure about the 1/8 model but on the 1/4 the displacor is fixed to the rod by a grub screw
Be careful running it without cooling as the liner is glued into the water jacket and if it gets to hot the glue breaks down and you end up with a water leak into the hot cap
Dont ask how I found that one out
The timing is set by the linkage the triangular thingy ma bob that the bow couples onto as long as the pins are at 90 it should be correct
Iv nearly finished a 1/4 one from some castings from David just needs painting but did have some problems with clearances as drawn also on the drawing the fits are pretty sloppy to say the least
Moriya is a great design although I lost my one as part of a swap for the 1/4 scale castings will have to make another soon


cheers