Search found 1161 matches

by kvom
Thu Mar 17, 2016 3:03 pm
Forum: Build Log
Topic: Kozo A3 in 1.5" scale - new project
Replies: 546
Views: 145389

Re: Kozo A3 in 1.5" scale - new project

Short update: last week I took it to the track for a hydro test on the boiler, which passed. However, several pipe joints had seeps and need to be tightened. This week I returned to the track and attempted a steam up. Still some small seeps, but I had problems in firing. First issue is that my stack...
by kvom
Wed Mar 09, 2016 8:31 pm
Forum: Build Log
Topic: Kozo A3 in 1.5" scale - new project
Replies: 546
Views: 145389

Re: Kozo A3 in 1.5" scale - new project

Passed hydro today. No leaks from boiler even though new piping has a couple of leaky pipe thread joints (will tighten). Left the loco at the track and am thinking to light a fire next Wednesday if the weather cooperates.
by kvom
Wed Mar 09, 2016 5:26 pm
Forum: All Things CAD and CAM
Topic: Free and easy to learn 3D CAD
Replies: 50
Views: 47570

Re: Free and easy to learn 3D CAD

I have the Solidworks veterans/student license. McMaster SW parts can be downloaded and used in assemblies here too.

Another free option is OnShape, a cloud-based system that's free to hobbyists. It's quite new, but is quite powerful.
by kvom
Fri Mar 04, 2016 7:59 am
Forum: Live Steam
Topic: Prototype boiler construction. Round vs Cone Headed Rivets
Replies: 9
Views: 2327

Re: Prototype boiler construction. Round vs Cone Headed Rive

That's a new class of builder - not just rivet counter but rivet head counter. :)
by kvom
Fri Feb 12, 2016 3:37 pm
Forum: Build Log
Topic: Kozo A3 in 1.5" scale - new project
Replies: 546
Views: 145389

Re: Kozo A3 in 1.5" scale - new project

After much fiddling plus discussion with a very experienced builder, I decided to use brass compression fittings along with the SS tube. http://www.pbase.com/kvom/image/162557340/large.jpg Tube bends were relatively straightforward, and there's no interference with the petticoat. Then I have basical...
by kvom
Tue Feb 09, 2016 8:12 am
Forum: Live Steam
Topic: 1940's German loco construction
Replies: 12
Views: 5384

Re: 1940's German loco construction

I noticed a couple of women machinists in the film. The 'Rosie the Riveter' meme was common during WWII here in the US, but I wasn't aware that Germany had drafted its women into industry.
by kvom
Mon Feb 08, 2016 8:18 am
Forum: Live Steam
Topic: Getstenciles.com closing down
Replies: 3
Views: 1541

Getstenciles.com closing down

I saw Pipes' use of stencils from this site for his American, so I inquired about getting some done myself. Got a reply that she is shutting down and retiring, so no new customers.
by kvom
Fri Feb 05, 2016 5:08 pm
Forum: Build Log
Topic: Kozo A3 in 1.5" scale - new project
Replies: 546
Views: 145389

Re: Kozo A3 in 1.5" scale - new project

I found and ordered a quantity of SS hex nipples on Amazon that can replace the brass ones used in the prior photo. No luck looking for a 45 degree with mail and female like the brass one. I think I can make one with 2 female threads and use a nipple for the male end. OTOH that 45 degree brass nippl...
by kvom
Thu Feb 04, 2016 4:31 pm
Forum: Build Log
Topic: Kozo A3 in 1.5" scale - new project
Replies: 546
Views: 145389

Re: Kozo A3 in 1.5" scale - new project

My stainless compression fittings and tube arrived from McMaster. The fittings are longer than I imagined, and a quick fit to the loco revealed a few problems. http://www.pbase.com/kvom/image/162495549/large.jpg The one on the steam port on top would interfere with the petticoat, and on the bottom i...
by kvom
Tue Feb 02, 2016 4:25 pm
Forum: Build Log
Topic: Kozo A3 in 1.5" scale - new project
Replies: 546
Views: 145389

Re: Kozo A3 in 1.5" scale - new project

Assessing the reassembly and piping project. Club member said copper tube in the smoke box is liable to corrode away, so I just ordered some SS tube and fittings from McMaster. Painted the boiler jacket again. Also ordered some elbows and brass pipe from PMR. I have remade the turret as well without...
by kvom
Tue Feb 02, 2016 4:19 pm
Forum: Live Steam
Topic: Steam cylinder stroke
Replies: 68
Views: 11931

Re: Steam cylinder stroke

If the piston is made thicker you could end up with the same space at each end at the end of the stroke.
by kvom
Wed Jan 27, 2016 5:24 pm
Forum: Build Log
Topic: Kozo A3 in 1.5" scale - new project
Replies: 546
Views: 145389

Re: Kozo A3 in 1.5" scale - new project

Hydro was a meaningfull success as there was no leakage through the throttle @100 psi. A couple of seeps from tapped connections, but I intend to rebuilt the turret head anyway as well as redoing 90% of the piping.