Search found 3021 matches

by Greg_Lewis
Thu Feb 29, 2024 12:09 am
Forum: Live Steam
Topic: Simple, heavy duty, truck design for ballast cars
Replies: 18
Views: 1927

Re: Simple, heavy duty, truck design for ballast cars

Sure. Anyone who wants the drawings just send me your email and I'll send them to you. The trucks look good under riding cars and are very sturdy and reliable. They were designed by the late Cal Tinkham and his had at least several hundred miles on them. As I wrote above, you could skip the cutouts ...
by Greg_Lewis
Wed Feb 28, 2024 11:40 pm
Forum: Live Steam
Topic: Simple, heavy duty, truck design for ballast cars
Replies: 18
Views: 1927

Re: Simple, heavy duty, truck design for ballast cars

Pontiac:
Send me your email and I'll send you the drawings. gregl@mail.fresnostate.edu
by Greg_Lewis
Mon Feb 26, 2024 10:06 pm
Forum: Live Steam
Topic: Simple, heavy duty, truck design for ballast cars
Replies: 18
Views: 1927

Re: Simple, heavy duty, truck design for ballast cars

How about something like this. The sideframes are just 1/2-inch plate and the axles ride in standard ball bearings. The bolster is just a piece of flat bar and the springs are stock items. The cutouts in the frames are to make them look better but aren't necessary. They can also be set up for brakes...
by Greg_Lewis
Fri Feb 23, 2024 10:19 pm
Forum: The Junk Drawer
Topic: An interesting model railroad video
Replies: 2
Views: 562

An interesting model railroad video

Here is a most interesting model railroad video. It's only 40 seconds but worth watching.

https://youtu.be/STpn3e1Zkb0?si=CUyEuEh6e3vO39Av
by Greg_Lewis
Tue Feb 20, 2024 11:02 am
Forum: General Discussion
Topic: End mill dish angle?
Replies: 4
Views: 388

Re: End mill dish angle?

Back to the point---it's very nice to have the ability to sharpen end mills properly, especially when you are in need and the job won't wait. That always happens. It was Sunday, and I needed to make an undercut on the end of a piece of stainless. 5/16 dia. Now I have, by my actual count, 75 milling...
by Greg_Lewis
Mon Feb 19, 2024 10:29 pm
Forum: General Discussion
Topic: End mill dish angle?
Replies: 4
Views: 388

Re: End mill dish angle?

Thanks, Harold. I'm working with that tool and cutter grinding attachment that you helped me with, when you honed in that block to fit that spindle. The whole attachment is a bit fiddly and certainly not up to a Darex, but it works. Although considering the time spent dealing with it, it's probably ...
by Greg_Lewis
Sun Feb 18, 2024 10:04 pm
Forum: General Discussion
Topic: End mill dish angle?
Replies: 4
Views: 388

End mill dish angle?

As we all know. an end mill has a slight dish or dovetail on the end cutting teeth. While I can find lots of diagrams that show the angle, I can't find any reliable numbers for that. I have one source that says one degree, another says 3/4 degree. So what is the proper dish angle? Or does it even ma...
by Greg_Lewis
Mon Feb 12, 2024 8:24 pm
Forum: General Discussion
Topic: Another What Is It
Replies: 8
Views: 502

Re: Another What Is It

Hm. There are six picas to an inch and 12 points to a pica, or as arborist wrote, 72 points to an inch. I vote for a typewriter tab bar.
by Greg_Lewis
Mon Feb 12, 2024 8:09 pm
Forum: Live Steam
Topic: Lettering on engine
Replies: 13
Views: 984

Re: Lettering on engine

The best source for this would be the library at the California State Railroad Museum in Sacramento. They have been quite helpful in the past when I've had questions.
by Greg_Lewis
Fri Feb 09, 2024 2:11 pm
Forum: Build Log
Topic: Northern 4-8-4 Build 3/4”
Replies: 276
Views: 62198

Re: Northern 4-8-4 Build 3/4”

Metric nuts in the smaller sizes do look better than SAE, but then you either have to use metric threads or re-thread them. However, for things that aren't in the foreground and compromise is OK, look for nuts labeled "small pattern" or "radio nuts." These have a smaller hex and ...
by Greg_Lewis
Wed Feb 07, 2024 9:47 pm
Forum: Build Log
Topic: Northern 4-8-4 Build 3/4”
Replies: 276
Views: 62198

Re: Northern 4-8-4 Build 3/4”

I think all of us have, at one time or another, made some nuts and bolts. I recently made up two dozen and not until I was done did I decide that the head size didn't look right so I had to start over. Agreed on the therapy, but I prefer to get mine from a bottle of scotch. My therapist said I shoul...
by Greg_Lewis
Sun Feb 04, 2024 1:21 pm
Forum: Build Log
Topic: Rebuild of an Allen Mogul.
Replies: 58
Views: 326853

Re: Rebuild of an Allen Mogul.

If the through holes are off, could you plug them and re-drill them?