Search found 937 matches

by Rwilliams
Wed Feb 19, 2020 6:41 pm
Forum: Build Log
Topic: 3/4" Scale J1e
Replies: 302
Views: 82962

Re: 3/4" Scale J1e

The valve pilot was rather maintenance intensive which caused the SP to begin removing them about 1950. By late 1952 and early 1953, they were a fading memory. Just a change in driver diameter of 1/2 inch was cause for a change in the cam inside the cam box. With driver diameters on different classe...
by Rwilliams
Mon Feb 17, 2020 5:04 pm
Forum: Build Log
Topic: 3/4" Scale J1e
Replies: 302
Views: 82962

Re: 3/4" Scale J1e

Always nice to see a few more Jack shop secrets revealed.

Is there going to be a Valve Pilot cam box appearing under the running board on this Hudson?

Robert
by Rwilliams
Wed Jan 15, 2020 1:10 pm
Forum: Live Steam
Topic: Help identify a part M-21 Mogul
Replies: 37
Views: 3417

Re: Help identify a part M-21 Mogul

The 1843 features the anticlimber sheet metal addition to the center of the pilot which indicates sometime after April of 1937. The photo of the missing feedwater pump does not have the anticlimber and still has the smaller Southern Pacific Lines lettering on the tender. During the late depression y...
by Rwilliams
Mon Jan 13, 2020 11:45 pm
Forum: Live Steam Marketplace
Topic: 1 Inch Journal Boxes
Replies: 3
Views: 746

Re: 1 Inch Journal Boxes

The lids look like the Nelson Gray injection molded lids common to 1 inch scale. The castings appear to have the look of the Little Engines tender trucks for the 1 inch Atlantic and Pacific models. The one inch scale journal box lids that Little Engines used to offer as castings to go with these jou...
by Rwilliams
Wed Jan 08, 2020 7:17 pm
Forum: Live Steam
Topic: Help identify a part M-21 Mogul
Replies: 37
Views: 3417

Re: Help identify a part M-21 Mogul

The M-21 class was a real brute of a Mogul. One of the heaviest Mogul designs ever constructed and certainly the largest of the SP system. They were considered "little Mikados" as they could pull the same train as a MK-5 on flat divisions down south. Their weight kept them off of some branches. They...
by Rwilliams
Sun Jan 05, 2020 1:13 pm
Forum: Live Steam
Topic: Run out of steam pressure after 100 feet
Replies: 40
Views: 8598

Re: Run out of steam pressure after 100 feet

The relapping of cast iron valve faces was/is an ongoing adventure in steam service. The more use, the more corrosion can be expected. I have seen full size blow down valve seats that will need relapping each year or every two years for sure, based on leakage observed. Several years of no lapping or...
by Rwilliams
Sat Jan 04, 2020 1:19 pm
Forum: Live Steam
Topic: Run out of steam pressure after 100 feet
Replies: 40
Views: 8598

Re: Run out of steam pressure after 100 feet

In regards to future corrosion and wear of the related parts. The cast iron of the cylinder block is far more prone to corrosion and this is where most of the lapping time will be needed. The bronze or brass valve is a far more corrosion resistant metal and will almost always need less lapping atten...
by Rwilliams
Fri Jan 03, 2020 12:25 pm
Forum: Live Steam
Topic: Run out of steam pressure after 100 feet
Replies: 40
Views: 8598

Re: Run out of steam pressure after 100 feet

Lapping compound is usually obtained in a metal can not unlike paint would be found in. There are various grades/grit sizes from coarse to superfine mixed with thick to thin oils to work well as a lubricant on the lapping plate. Quality lapping compounds can be found on the McMaster-Carr website cat...
by Rwilliams
Tue Dec 31, 2019 9:57 pm
Forum: Live Steam
Topic: Run out of steam pressure after 100 feet
Replies: 40
Views: 8598

Re: Run out of steam pressure after 100 feet

Lapping will surely make the surface smooth. You want to fill all of the holes and ports with some silicone sealer and once it cures, slice off the excess with a sharp razor blade. This makes cleaning the lapping compound off the surface a dream. Heavy and flat are the secrets to a good lapping plat...
by Rwilliams
Sat Dec 28, 2019 1:15 pm
Forum: Live Steam
Topic: Allen Mogul: Packing in saddle assembly?
Replies: 12
Views: 2162

Re: Allen Mogul: Packing in saddle assembly?

The mystery material could be a mixture of powdered white lead and linseed oil that was installed to add weight and insulate the saddle casting. Today both products are hard to find but still very useful if one has a supply secreted away. Often times it can be found at estate sales where the sellers...
by Rwilliams
Sat Dec 28, 2019 12:28 am
Forum: Live Steam
Topic: Full sized injector from scratch
Replies: 19
Views: 4473

Re: Full sized injector from scratch

What is the gallons per hour capacity of the #4 injector?

Did you delete the check valve on the end of the delivery line to the boiler?
by Rwilliams
Thu Dec 26, 2019 11:25 am
Forum: Live Steam
Topic: Handling Bulk Flat Spring Material
Replies: 12
Views: 1967

Re: Handling Bulk Flat Spring Material

The late Bob Reedy lived up in the hills southeast of Sacramento and had few visitors. I stopped by a few times to visit and see what was happening in his shop. At that time he was constructing the Mogul that was his first steam locomotive build project. He showed me the leaf springs he had recently...