cylinder passageways

[dicine]

Hi all, I am building a "PM Research 1Bi kit" and I am not grasping the plan for the cylinder. I have completed the 20degree passageways into the valve ports. But the plans say to mill into cylinder bore. Is this correct? This is what the plan says to do next> "1/8 Dia end mill into cylinder bore from holes 1/8 deep"
Does this mean to mill the holes thru the valve ports into the cylinder bore?

 

[crab]

No. It means a small notch from the passageways into the bore at each end so you can get steam to the piston.Oh yeah, wEc1 to the forum.
Bill

 

[chuck foster]

a picture of the drawing would be nice so we could have a look at it to tell you exactly what is going on.

chuck

 

[dicine]

Here is a picture of the drawing

 

[Philjoe5]

Dicine,
Here's the cylinder with passageways about to be drilled through to the steam chest ports:

You notch the cylinder ends and then drill at the appropriate angle to meet the ports in the steam chest. Examples shown by others tell the tale.

Note: I removed my original photo from this posting not realizing that the small notches I made on the cylinder ends disappeared when I drilled the passageways :-[

Phil

 

[dicine]

hey thanks for the replies guys ;D
I can now start on the 18 cover holes Thm:

 

[tel]

Something like this

 

[Jasonb]

Or this

 

[dicine]

No, But that is a beautiful piece of machine work Thm:
my cylinder is the picture posted by Philjoe5