Mystery steam engine

[chris123]

If that is the case, then change this dimension.
The other dimensions above will still work.
.
View attachment 163864

This is what a typical D-valve looks like.
I did a flat design for you.
You really don't need a domed design like is shown in this picture.
.
View attachment 163861

Hi green twin
In my engines case
How is the d valve attached to rhe rod?
On the pic you got threads and nuts
I got a blank round.
Regards chris

 

[chris123]

Hi green twin
In my engines case
How is the d valve attached to rhe rod?
On the pic you got threads and nuts
I got a blank round.
Regards chris

 

[chris123]

Finally after several attempts
I got a print of the hohles
And the slot in the front
So the hohles seem to be in the frontpart
Towards the chest. Triangular hohle

 

[chris123]

Finally after several attempts
I got a print of the hohles
And the slot in the front
So the hohles seem to be in the frontpart
Towards the chest. Triangular hohle

The diameter are maybe 5 mm
I try to get a better print

 

[chris123]

New attempt

 

[chris123]

New attempt

Thats about all i get

 

[Steamchick]

Hi green twin and jason
Can it be that here a little pressure gauge
Or a cock is installed?

Or possibly an oiler? - Or more likely an independent steam feed - which can be used for starting if the HP cylinder is at TDC/BDC? - using a steam valve akin to a Whistle valve (Normally closed, open only when operated momentarily)?