Search found 316 matches

by johnpenn74
Sat Jun 16, 2018 5:37 pm
Forum: Riding Scale Railroading
Topic: Signaling Beyond Simple Passing Sidings
Replies: 14
Views: 1677

Re: Signaling Beyond Simple Passing Sidings

Chuck, Reading an old post I am curious what you figured out on the WYE Signaling. Here's my .02. I agree with a lot of previous points that APB wired in this case will simply give you an identical permits on both sides of the wye. I beleive the solution is would to treat the whole thing at an inter...
by johnpenn74
Sat Jun 16, 2018 4:43 pm
Forum: Riding Scale Railroading
Topic: Your RR grading methods??
Replies: 15
Views: 1654

Re: Your RR grading methods??

Dick and I once tried the salt on MCC railroad for weed control. It all started when he replaced a water softener and dumped the salt water out near the track.. Killed everything. Armed with this idea we figured figured we would use a push fertilizer spreader to scatter animal salt that we picked up...
by johnpenn74
Sat Jun 16, 2018 3:45 pm
Forum: Riding Scale Railroading
Topic: "Trip Track" signals
Replies: 4
Views: 994

Re: "Trip Track" signals

Chuck, My understanding is the prototype actually uses trip tracks to take single track in between Augusta and Greenwood. As far as the model application goes there is a benefit where you could have it seal in logically or hardwaired based on the requesting direction, that it it makes a really easy ...
by johnpenn74
Tue Jun 05, 2018 8:02 pm
Forum: Live Steam
Topic: nuts and bolts in scale
Replies: 19
Views: 1260

Re: nuts and bolts in scale

Use Metric and live with the hex head. all the way down to 3mm in A2 stainless or zinc. Mcmaster has them all.
by johnpenn74
Sun May 20, 2018 10:25 pm
Forum: Live Steam
Topic: Looking for Quarter Scale Donkey plans
Replies: 8
Views: 567

Re: Looking for Quarter Scale Donkey plans

More dreaming than doing. As I have been on the road continuously since December of 16. Have made a few parts, but nothing consequential. I am being quite accomplished at collecting cast iron... :-)
by johnpenn74
Sat May 19, 2018 9:38 pm
Forum: Live Steam
Topic: Looking for Quarter Scale Donkey plans
Replies: 8
Views: 567

Looking for Quarter Scale Donkey plans

Can anyone point me in the direction of any quarter scale donkey drawings? Would like to find a model of a larger one (as opposed to doubling the Harris design).

JP
by johnpenn74
Sun Apr 29, 2018 10:31 pm
Forum: Live Steam
Topic: Passing of Doug Van Veelen
Replies: 5
Views: 1256

Re: Passing of Doug Van Veelen

Just a small 4.75 gauge 0-4-0 that Doug gave me. There came a time when he had to let go of some of the heavier projects and so I inherited this and another 4.75 2-6-2 chassis and a partial Clishay. Sold the water tube boilers and Crab to make some $ for him. I think these other projects are on the ...
by johnpenn74
Thu Apr 26, 2018 9:04 pm
Forum: Live Steam
Topic: Allen Mogul Timing
Replies: 9
Views: 1085

Re: Allen Mogul Timing

Dale, I will 2nd John S comment about the rocker arm. Set screws don't work. On my 4-4-0 I drilled and reamed for a taper pin. I will also suggest NOT adjust the excentric strap lengths as a means to adjust your timing. There is a design length from the clevis to the eccentric centers. Take the whol...
by johnpenn74
Fri Apr 13, 2018 8:21 pm
Forum: Live Steam
Topic: Passing of Doug Van Veelen
Replies: 5
Views: 1256

Re: Passing of Doug Van Veelen

Well, I tried to find a photo to share, but came to realize all my pics of Doug, I and his projects are 35mm. I was at GaTech back then and can remember a few weekends we worked on DRG Narrow Gauge box cars. Aspirations to build a dozen; I only two were finished. I do remember taking one over to Way...
by johnpenn74
Fri Mar 30, 2018 8:14 pm
Forum: Live Steam
Topic: Equalizing process and "faking-it-out"
Replies: 12
Views: 1560

Re: Equalizing process and "faking-it-out"

Equalization and Springing are two different parts of the suspension system. Bear in mind that two serve two different functions. Equalization - like the name suggests is all about making wheel's ultimate loading of the drivers to the rail the same. This gets into some physiscs and frictional loss c...
by johnpenn74
Tue Mar 27, 2018 7:18 pm
Forum: Live Steam
Topic: Equalizing process and "faking-it-out"
Replies: 12
Views: 1560

Re: Equalizing process and "faking-it-out"

Here are a few ideas that night help. If you do leaf springs, the length of the leafs in the stack should have equal subdivided stepped length to the sets. This makes it so you can calculate the spring force based on the shape and material. If you have need to add leafs to add force, you do so by ad...
by johnpenn74
Sun Feb 25, 2018 12:28 pm
Forum: Live Steam
Topic: EARLY 4-6-6-4 CHALLENGER. FRAME
Replies: 38
Views: 2821

Re: EARLY 4-6-6-4 CHALLENGER. FRAME

Evgen,
On a similar note, I believe that Norfolk and Western Y3 (Original 2-8-8-2 USRA design) was also bar type frame. Later designs Y4-y6 were cast locomotive beds.

JP