Search found 2907 matches

by Glenn Brooks
Tue Oct 24, 2023 7:59 pm
Forum: Grand Scale Railroading
Topic: Cagney valve gear question
Replies: 21
Views: 7829

Re: Cagney valve gear question

Thank you Mike, I ordered a recent reprint of the book. Sounds like a good reference. Outside the forum I learned many of the original Cagney’s were equipped with Baker Gear - some got replaced with Walschaerts over the years, as the original equipment wore out. I think I will definitely go with out...
by Glenn Brooks
Mon Oct 23, 2023 12:51 am
Forum: Grand Scale Railroading
Topic: Cagney valve gear question
Replies: 21
Views: 7829

Cagney valve gear question

Hello all, Iam building out a 15” partially assembled Cagney. It currently has no valve gear, or parts, and no eccentrics on the axles, etc, so basically starting with a blank slate. So thinking about installing a Walschaerts gear, instead of the historically common Stephansons. Mainly due to ease o...
by Glenn Brooks
Sun Oct 22, 2023 9:05 pm
Forum: Riding Scale Railroading
Topic: Battery electric instrumentation
Replies: 6
Views: 3577

Re: Battery electric instrumentation

GRA2472, thanks. Looks like the perfect set of gauges. Iam a little unclear yet how to figure maximum possible amp draw. I suspect the forklift motors might draw more than 100 amps at peak draw… the controllers are rated at 400 amps.

Glenn
by Glenn Brooks
Sun Oct 22, 2023 9:01 pm
Forum: Live Steam
Topic: Walscherts Valve Gear
Replies: 4
Views: 2458

Re: Walscherts Valve Gear

Dick, thanks for posting. Very impressed with the C&O Museum’s efforts to produce such nice animations.

Their earlier part 1 video is informative also.

https://youtu.be/dNP-TL_R4Ys?si=7A4yzvIaxiknWzmS

Glenn
by Glenn Brooks
Mon Oct 16, 2023 1:40 pm
Forum: Riding Scale Railroading
Topic: Battery electric instrumentation
Replies: 6
Views: 3577

Re: Battery electric instrumentation

A local EV club member gave me a couple of series wound 7” x 14” forklift tractor motors. So I have one motor for each hood end. I think the controllers are old school Curtis 1204 models (non programmable, but 400 amp capacity). Set up for chain and sprocket drive, with an intermediate Jack shaft to...
by Glenn Brooks
Sun Oct 15, 2023 2:26 pm
Forum: Riding Scale Railroading
Topic: Battery electric instrumentation
Replies: 6
Views: 3577

Battery electric instrumentation

Iam trying to decide what instrumentation to install in the cab to monitor battery life and electric draw during operation. This will be a 1/3rd scale, battery electric, 44 ton center cab (48v, maybe latter 60 volt, system) with 1600 -2000 amp hours available with two battery packs and two motors (o...
by Glenn Brooks
Fri Oct 13, 2023 12:58 pm
Forum: General Discussion
Topic: Drilling holes at an angle
Replies: 18
Views: 6858

Re: Drilling holes at an angle

Very interesting responses. I think the 1/2”x2” work is loose e.g. not already mounted in place. So potentially could be set up in a jig and clamped to a table. Don’t know what his tolerance is for the finished product. It’s a welded stair railing, so not likely to be a precision job. I’ll pass on y...
by Glenn Brooks
Thu Oct 12, 2023 10:37 pm
Forum: General Discussion
Topic: Drilling holes at an angle
Replies: 18
Views: 6858

Drilling holes at an angle

A guy on our local metalworkers forum is asking how to drill 5/8” od holes, at an 33 degree angle, into vertically mounted 1/2” x 2” flat bar. He doesn’t have a mill available for the work, just a drill dress.

Any suggestions how to accomplish such a task?
by Glenn Brooks
Wed Oct 11, 2023 1:56 pm
Forum: Grand Scale Railroading
Topic: Cagney eccentrics
Replies: 0
Views: 64391

Cagney eccentrics

Anybody know the dimensions for 15” ga Cagney Eccentrics ? Particularly looking for OD and radial distance to the crank pins.

Alternatively, is there some rule of thumb, where these dims can be calculated?

Thanks
Glenn
by Glenn Brooks
Tue Oct 10, 2023 3:14 pm
Forum: Lathes
Topic: Chatter on Single Point Threading
Replies: 5
Views: 2134

Re: Chatter on Single Point Threading

Yep, look at the screw itself. Changing mine made an enormous difference - basically made the lathe work like new again.
by Glenn Brooks
Tue Oct 10, 2023 1:50 pm
Forum: Lathes
Topic: Chatter on Single Point Threading
Replies: 5
Views: 2134

Re: Chatter on Single Point Threading

I had a similar problem with my 1968 south bend Fourteen lathe. When I bought it used, I noticed a lot of “chatter” marks repeating on the finish cuts when turning down various parts. Short story, the cross feed screw was worn in some of the middle area of the thread. This allowed the cutting tool (...
by Glenn Brooks
Sat Oct 07, 2023 2:46 pm
Forum: General Discussion
Topic: How long to heat soak?
Replies: 13
Views: 5363

Re: How long to heat soak?

Interesting experience with locktite. A friend of mine build a small box cab a few years ago - mainly to transport down to, and run around, train mountain. He used Locktite on the wheels and axles. Worked great for 500 miles. Then it failed. We surmised these axle epoxies have a finite life span.