Mystery steam engine

[Charles Lamont]

Great progress. One thing that may confuse on assembly: the valve is not pressed mechanically against the port face but only by steam pressure in the valve chest.

 

[chris123]

Yes the inlet is right there
I need also to make e flange
Also working on copper boiler all brazed with phosphor
Higher melting point then silver
Should i worry about the paint or
Just clean it let it as it is?

 

[Charles Lamont]

Paint? Up to you. I would clean and leave the patina of age for now. If you paint it, then you will want to polish all the bright parts to match.

 

[Jasonb]

I'm with Charles

 

[chris123]

Ok
I leave it as it is
Just clean and thats it
Thank you

 

[chris123]

Hi charles
Before i drill the hohle i better double check
From the top front of the trapezional
Steamchest opening to the actual valveface is a 2.5 mm recess step back
If i drill 6.35 center from the front then the steam have to push the valve 2.5 mm
Surely not
I ad the 2.5 mm to the 6.35
Isnt it?

 

[chris123]

See
It fits pretty good sideways
Bud the vslveface sitts 2.5 mm inwards
Its not paralell with the top

 

[chris123]

I mark a line so u can see
I take a 6 mm rod and turn a center point
And stick it in from the bottom
And mark the center like that
If u know what i mean
I could try to measure bud i think the first is better

 

[chris123]

Ok i mark

 

[chris123]

Now i blacked it also
I could also go center and from that line 6.35
Foreward and thats the point
Bud may double check on the bottom ?

 

[Jasonb]

Check with Charles first but I would say you are OK to add whatever the distance the line is back from the edge measured in the middle to the 6.35mm. Also adjust the buckle by the same amount.

How does the distance from th eedge to the one you scribed from the bottom with the pointed rod compare to 6.35 plus top overlap?

 

[chris123]

Check with Charles first but I would say you are OK to add whatever the distance the line is back from the edge measured in the middle to the 6.35mm. Also adjust the buckle by the same amount.

How does the distance from th eedge to the one you scribed from the bottom with the pointed rod compare to 6.35 plus top overlap?

Hi jason
I do it as good as i can
Its actually not 2.5 its 3.37
I need to check the pic again

 

[chris123]

Yes the mic shows 3.37
Bud it doesnt seems to be paralell
To the top
Should i mark it from bottom with a pointed rod and see if we are same center?

 

[Jasonb]

Yes black it again and put the rod in from the bottom

 

[chris123]

Yes black it again and put the rod in from the bottom

Thanks jason

 

[Charles Lamont]

Yes. Position the hole so that it ends up concentric with the rod. Marking with a pointed rod from the bottom should do nicely. As jason says, you will also need to alter the hole position in the buckle. I am sorry about misunderstanding the dimensions you gave, but then your written posts here are sometimes difficult to understand.

 

[chris123]

Hi charles
I ad the 3.37 isnt it