Search found 163 matches

by daves1459
Mon Jun 29, 2020 9:13 pm
Forum: Live Steam Marketplace
Topic: Spanner Wrenches
Replies: 0
Views: 267

Spanner Wrenches

I have some spare spanner wrenches that I wire EDM cut out of 3/16" low carbon steel plate. The reason was to have a more durable wrench than the cast wrenches usually available. They are double ended and sized for 1/2" to 5/8" diameter Nathan type spanner nuts like those used Super Scale and Loco P...
by daves1459
Wed Jun 17, 2020 6:29 pm
Forum: Live Steam
Topic: Plates
Replies: 13
Views: 1143

Re: Plates

makinsmoke wrote:
Tue Jun 16, 2020 8:33 pm
How many do we need to order for him to make the mininum?
I don't recall the exact number. But, it was in excess off 100. Not 100 + of each. But, 100 + of all plates. As I recall, but not sure, I believe Robert said he also did commercial work.

Dave
by daves1459
Tue Jun 16, 2020 7:53 pm
Forum: Live Steam
Topic: Plates
Replies: 13
Views: 1143

Re: Plates

I was in touch with Robert Dustin last Fall. He said he did not actually make the plates. He did the art work and when the quantity of plate orders for several customers was large enough to meet the photo etch shop's minimum quantity he would forward the orders. Robert said in normal times that usua...
by daves1459
Wed Jun 10, 2020 10:27 pm
Forum: Live Steam
Topic: Old School German Engineering
Replies: 14
Views: 1698

Re: Old School German Engineering

Is there a reason why the German railroads often painted the chassis and wheels of their steam locomotives red? The company I worked for had two factories in the Heidelberg area. The production machinery was top quality. The Tool Room machinery was fist class and workers very capable, nice guys too ...
by daves1459
Thu Apr 23, 2020 6:32 pm
Forum: Live Steam
Topic: Air Pump D Valves
Replies: 29
Views: 4559

Re: Air Pump D Valves

I found this item on ebay. PEEK 1.0 in. diameter, 3.0 in. long. I bought one of those pieces. At $25.00 it is affordable enough that if the PEEK material doesn't work the loss is not too great. To Bill Shields point the cross sectional drawing on the pump in the current issue of LSORR shows some so...
by daves1459
Tue Apr 21, 2020 7:35 pm
Forum: Live Steam
Topic: Air Pump D Valves
Replies: 29
Views: 4559

Re: Air Pump D Valves

2000 psi, being shoved back and forth by a narrow shoulder will quickly end up with a dimple and lose valve travel. by all means try it...but don't be surprised if you lose functionality.. I get your point. Especially designs like I'm considering where over travel between the piston and valve call ...
by daves1459
Mon Apr 20, 2020 7:30 pm
Forum: Live Steam
Topic: Air Pump D Valves
Replies: 29
Views: 4559

Re: Air Pump D Valves

I was unaware of the Torlon 4301 and will look into it. Thanks for the tip. Same for the PEEK material. I'll look into that also. Being that it is carbon fiber impregnated I thought it not an issue. I've heard that those using virgin Teflon have to use a frame. As I recall the spec. sheet gave the P...
by daves1459
Sun Apr 19, 2020 7:35 pm
Forum: Live Steam
Topic: Air Pump D Valves
Replies: 29
Views: 4559

Re: Air Pump D Valves

Which is why 100's of these pumps have been successfully built and operated using 303 stainless valves The first two pumps that I built had 303 stainless steel valves and they worked well. That is as long as lubrication was present in adequate amounts. Almost as soon as the lubricant was missing sc...
by daves1459
Sat Apr 18, 2020 11:42 pm
Forum: Live Steam
Topic: Air Pump D Valves
Replies: 29
Views: 4559

Re: Air Pump D Valves

Dick_Morris wrote:
Sat Apr 18, 2020 10:07 pm
PEEK HPV
Yikes! 1 inch diameter by 1 foot $141.05. Good to 480 degree f.
Yeah, but for the little valves for a feed pump wouldn't a 5/8" diameter at $42.11 a foot or 3/4" diameter at $56.84 a foot do?

Dave
by daves1459
Sat Apr 18, 2020 7:48 pm
Forum: Live Steam
Topic: Air Pump D Valves
Replies: 29
Views: 4559

Re: Air Pump D Valves

I've run up against several aluminum bronze alloys over the years. They ranged from incredibly difficult to machine to moderate. I've had good luck on small to medium model parts with alloys with 13% or less aluminum using high speed steel tools as long as they are dead sharp. Micro grained carbide ...
by daves1459
Fri Feb 28, 2020 8:14 pm
Forum: Live Steam
Topic: BR55/G8.1 Locomotive Project
Replies: 48
Views: 11640

Re: BR55/G8.1 Locomotive Project

Hi, Does anyone chamfer the edges of the firebox plates? Firebox Chamfer 1.png Thanks Ian I do on boilers with flanged end plated, but not in the mud ring area. I chamfer the plate flange edges from the top of the mud ring up to the crown sheet. The purpose is to keep the water leg flow area as ope...
by daves1459
Wed Feb 26, 2020 9:18 pm
Forum: Live Steam
Topic: Most cost efficient way to get steel tire blanks?
Replies: 38
Views: 6978

Re: Most cost efficient way to get steel tire blanks?

The following may offer some reference for those wishing to try trepanning the center out of a steel plate. What is shown in the pictures is a A36 plate 1" thick 12" square. The corners of the plate were cut off so the plate would swing over the lathe bed and held in a 10" 4-jaw chuck. What I'm maki...