Search found 221 matches

by jlakes85
Thu Apr 02, 2020 8:46 pm
Forum: Live Steam
Topic: Slide Valve Cylinder Castings
Replies: 17
Views: 4578

Re: Slide Valve Cylinder Castings

I did all the passages as plugs first the poured plastic or plaster boxes..i didn't have the enthusiasm (or skill) to whittle out the negative core boxes
by jlakes85
Thu Apr 02, 2020 3:26 pm
Forum: Live Steam
Topic: Slide Valve Cylinder Castings
Replies: 17
Views: 4578

Re: Slide Valve Cylinder Castings

Looks great. My foundry told not to bother mounting to a board. I just finished doing a pattern for the valve plate. I'm still looking at that bottom corebox photo..very cool
by jlakes85
Sun Mar 22, 2020 6:17 pm
Forum: Live Steam
Topic: Core Boxes: Why were they usually made before the pattern?
Replies: 9
Views: 2469

Re: Core Boxes: Why were they usually made before the pattern?

Hi Pat, Gotcha. I think that would imply that the prints were 'poured' from the boxes, but in industry videos from the 50's where they mentioned the boxes were built first, the patterns still had seperately attached wooden core prints. This is why I was scratching my head..it wouldn't seem to matter...
by jlakes85
Sun Mar 22, 2020 11:12 am
Forum: Live Steam
Topic: Core Boxes: Why were they usually made before the pattern?
Replies: 9
Views: 2469

Core Boxes: Why were they usually made before the pattern?

Hi All,

I've been wondering about this, but can't seem to get a definitive answer. Any feedback is much appreciated.

Regards,

John
by jlakes85
Sun Mar 01, 2020 12:48 pm
Forum: Live Steam
Topic: Slide Valve Cylinder Castings
Replies: 17
Views: 4578

Re: Slide Valve Cylinder Castings

Rudd, There were core prints for each port, about 2 inches tall, 2 degree taper on each side. On the cylinder bore side, i left about 2 inches of extra length for a core print. The exhaust passage was the most concerning, as one side dead ends within the cylinder, leaving only the valve face side fo...
by jlakes85
Sun Mar 01, 2020 10:20 am
Forum: Live Steam
Topic: Slide Valve Cylinder Castings
Replies: 17
Views: 4578

Re: Slide Valve Cylinder Castings

Hi Frank,

Spacing between ports in supposed to be 5/16, which is the same width as the power ports. Exhaust port is supposed to be 1/2 inch wide.

-John
by jlakes85
Sat Feb 29, 2020 12:13 pm
Forum: Live Steam
Topic: Slide Valve Cylinder Castings
Replies: 17
Views: 4578

Re: Slide Valve Cylinder Castings

Hi Marty,

This is for a 5" scale 15" gauge engine.

Regards,

John
by jlakes85
Sat Feb 29, 2020 10:29 am
Forum: Live Steam
Topic: Slide Valve Cylinder Castings
Replies: 17
Views: 4578

Slide Valve Cylinder Castings

Here is my first attempt at having my cylinder pattern cast. I had all the power and exhaust cores cast in. They didn't come out too bad, but I wanted to know if anyone had any experience with regards to the allowable fudge factor for the spacing between the ports. The plans do have a provision for ...
by jlakes85
Tue Jan 21, 2020 8:02 am
Forum: Live Steam
Topic: NJ/NYC/LI Machinery Movers
Replies: 19
Views: 4012

NJ/NYC/LI Machinery Movers

Hi Guys,

Can anyone recommend a machinery mover that they've used in the tri-state area? Machine in question is a 17× 60 ish lathe. 5-6k lbs. Thanks again

Regards,

John
by jlakes85
Wed Jan 15, 2020 6:13 am
Forum: Live Steam
Topic: Laying out rectangular cores on foundry pattern
Replies: 16
Views: 3448

Re: Laying out rectangular cores on foundry pattern

Tharper,

I poured core boxes in either quik cast 8002 or plaster of paris (when i ran out of the repro..) i definitely prefer the repro..
by jlakes85
Mon Jan 13, 2020 11:13 am
Forum: Live Steam
Topic: Laying out rectangular cores on foundry pattern
Replies: 16
Views: 3448

Re: Laying out rectangular cores on foundry pattern

Hi Mike,

I should be in good shape on the core prints. They are 2" in height with a 1.5 deg taper down to the valve face and ample on the cylinder bore side