Search found 312 matches

by johnpenn74
Sun May 20, 2018 10:25 pm
Forum: Live Steam
Topic: Looking for Quarter Scale Donkey plans
Replies: 8
Views: 314

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: 314

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: 1166

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: 980

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: 1166

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: 1506

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: 1506

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: 2661

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
by johnpenn74
Sun Feb 18, 2018 1:18 pm
Forum: Live Steam
Topic: Allen steam fittings
Replies: 23
Views: 2101

Re: Allen steam fittings

One idea I cooked up but have yet to try is to toss the Allen Nozzle and make a nozzle with 45 degree connections (or appropriate angle) to receive compressesion fittings between it and cylinder. The motivation is to make the blast nozzle penetration and steam lines in to single holes instead of the...
by johnpenn74
Sun Jan 28, 2018 11:34 am
Forum: Live Steam Marketplace
Topic: Henry Greenly Books ****Sold****
Replies: 2
Views: 630

Re: Henry Greenly Books

GWR, Got one left? I'll take it.

JP
by johnpenn74
Sun Jan 28, 2018 11:28 am
Forum: Live Steam Marketplace
Topic: Caribou Chassis ****SOLD****
Replies: 6
Views: 859

Re: Caribou Chassis

What scale an gauge?
by johnpenn74
Sun Jan 28, 2018 11:04 am
Forum: Live Steam
Topic: Hand rail
Replies: 1
Views: 418

Hand rail

Where does one get the formed material to make hand rail stantions for diesel engines? Finished model part supplier? Commercial supplier of formed section?