Search found 349 matches

by jscarmozza
Tue Jun 16, 2020 11:44 am
Forum: Casting & Foundry Work
Topic: Oversized Stainless Keg Furnace Build
Replies: 8
Views: 750

Re: Oversized Stainless Keg Furnace Build

Pat, it seems like you have a good handle on the process, you may want to think about trying different oil additives to your diesel fuel. I thought about oil firing one of my locomotives, so I made a trial nozzle and experimented with it on compressed air and kerosene. I was near the end of the tria...
by jscarmozza
Tue Jun 02, 2020 4:40 pm
Forum: Casting & Foundry Work
Topic: Permanent mold hot tears
Replies: 4
Views: 773

Re: Permanent mold hot tears

Hmmm, I'll see if I can modify the mold and give it another try. Thanks Rick.
John
by jscarmozza
Mon Jun 01, 2020 6:22 pm
Forum: Casting & Foundry Work
Topic: Permanent mold hot tears
Replies: 4
Views: 773

Re: Permanent mold hot tears

Rick, I've been playing around with this all afternoon and I think I have a fundamental design flaw with the solid core. The solid core is not able to burn out and collapse, so the metal tears as it cools and shrinks around it. This wasn't one of my better ideas...going to have to come up with a pla...
by jscarmozza
Mon Jun 01, 2020 1:47 pm
Forum: Casting & Foundry Work
Topic: Permanent mold hot tears
Replies: 4
Views: 773

Permanent mold hot tears

I'm building a 1" scale passenger car and will be needing a lot of windows, so I fabricated a permanent mold for a window frame from three layers of 1/4" aluminum plate and tried a few experimental pours using pot metal and later lead. The first three pours were short runs until the mold heated up, ...
by jscarmozza
Thu May 28, 2020 8:14 am
Forum: Live Steam
Topic: Cylinder honing
Replies: 15
Views: 2396

Re: Cylinder honing

It did run on air...for the sake of symmetry, do you think I should make both liners the same, or leave well enough alone?
by jscarmozza
Wed May 27, 2020 5:29 pm
Forum: Live Steam
Topic: Cylinder honing
Replies: 15
Views: 2396

Re: Cylinder honing

A friend took the cylinders to someone he knew and had the bores trued up and everything fits fine, but when he brought them back he told me that he doesn't know anything about steam engines (neither do I) but something didn't look right. What didn't look right (and I knew about it) is the steam por...
by jscarmozza
Sun May 24, 2020 5:37 pm
Forum: Casting & Foundry Work
Topic: Mystery bronze
Replies: 15
Views: 2321

Re: Mystery bronze

Based on the color I was a lot hotter. I wonder why it burned to all dross and not just concentrated copper?
Thanks. John
by jscarmozza
Sun May 24, 2020 10:40 am
Forum: Casting & Foundry Work
Topic: Mystery bronze
Replies: 15
Views: 2321

Re: Mystery bronze

I think we know...it turns to dry ashy dross. Crap, I may be remaking a bunch of bushings! Explains why it machined so well. Thanks David, it's not the answer I wanted but at least I know what it is now.
John
by jscarmozza
Sun May 24, 2020 7:43 am
Forum: Casting & Foundry Work
Topic: Mystery bronze
Replies: 15
Views: 2321

Re: Mystery bronze

David, why do you think it's red brass, in the first response to my question Frank also thought it may be brass? I'm curious, I've been using the items that I cast on an engine project where bronze, not brass, is the appropriate material,I always thought all water meter bodies were bronze. Also, wha...
by jscarmozza
Tue May 19, 2020 7:18 am
Forum: Live Steam
Topic: Cylinder honing
Replies: 15
Views: 2396

Re: Cylinder honing

Thank you all! Hones are out...Cycle Pro here I come. Thanks for enlightening me, when I started this restoration I found the the distances from the center of axle to center of crank pin to be different on each wheel, and significantly different from side to side (it would only turn with a few bushi...
by jscarmozza
Mon May 18, 2020 6:13 pm
Forum: Live Steam
Topic: Cylinder honing
Replies: 15
Views: 2396

Re: Cylinder honing

I believe it, the cylinder with the packing yarn had better compression than the one with rings! And that's with a cylinder that looked like it had a screw thread in it! Hi Marty, good to hear from you, I'll call around, but I don't think any engine shop is going to want to fool around with anything...
by jscarmozza
Mon May 18, 2020 4:10 pm
Forum: Live Steam
Topic: Cylinder honing
Replies: 15
Views: 2396

Cylinder honing

I'm rebuilding an old 1" scale locomotive, I noticed that the maximum stroke was different in the right and left cylinders. When I got into the cylinders I found two different length pistons, hence the different strokes. But what was really interesting was someone had used packing yarn instead of ri...