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

This is turning into a bloody disaster.
The plans are missing some measurements which I can work around .
But what are  there Are not all correct in my opinion.
Piston rod calls for 2 inch between piston bottom and the top of the slide guide .
I made it 2 mm longer as I can always shorten it .
But it does not work .
With the gland screw/nut in place in the cylinder bottom and all assembled .
When piston at BDC slide /guide is at the bottom 0f the trunk guide  ( OK )
But slide piston up untill the guide touches the gland nut only 1 1/4 stroke ( should  be 1 1/2 )
Shorten the gland nut you say ?? Well it is that short now that it can not be adjusted when the trunk
Guide is bolted up also with guide up against the gland nut the piston is only 3/4 of the way up the cylinder .
Make a new piston rod ?? Buggar as piston is threaded and silver soldered in  place .

Cheers
Dennis