Search found 356 matches

by johnpenn74
Tue Jan 17, 2012 3:04 pm
Forum: Live Steam
Topic: How Do You Calculate Connecting Rod Length?
Replies: 33
Views: 8492

Re: How Do You Calculate Connecting Rod Length?

Rod Length A longer rod is better, right? maybe not. Many mikados / consolidations have the main rod connection on the third driving axle. This far back, should reduce the angle of the main rod from the cylinder centerline, thus increasing the verticle the force applied to the crosshead guides. Reme...
by johnpenn74
Sun Jan 15, 2012 11:51 pm
Forum: Live Steam Marketplace
Topic: My new website
Replies: 25
Views: 6011

Re: My new website

For those interested in Fox Trucks, here's a pic of a set at the Rockton Ricon Near Columbia South Carolina. Same place as Hampton and Branchville #44.

There's also some drawings of SP style fox trucks CSRRM.

JP
by johnpenn74
Tue Jan 10, 2012 2:36 pm
Forum: Live Steam Marketplace
Topic: "SOLD"1 1/2" Scale 2-8-2 Mikado Logging Engine
Replies: 1
Views: 1656

Re: 1 1/2" Scale 2-8-2 Mikado Great Northern on air

Bob,
Can you offer some insight as to what parts are aluminum and what parts are not. Appears the rods are, but not sure from photos.
Will the tender be posted?
Driver Dia?

JP
by johnpenn74
Mon Jan 09, 2012 12:33 pm
Forum: Live Steam
Topic: saddle tank forming
Replies: 26
Views: 3637

Re: saddle tank forming

Making Flanges Guys, Tenn Valley RR Museum has a flanging machine in their shop I think. They got it several years ago. I never saw it run. It might be worth while to hit up the backshop gang and see if they have some advice on how the machine works and how you can apply it to our smaller problems. JP
by johnpenn74
Mon Jan 02, 2012 11:56 pm
Forum: Live Steam
Topic: Link and Pin couplers
Replies: 30
Views: 6249

Re: Link and Pin couplers

Dan, I did not see Dave's address so I'll just let you pass it along. I am good for 8 drafts. Just the rough castings, nothing machined at all. I'll post some more pics when I get down to the shop with a camera on what I have already built. The 5/0 was the result of a link not to wide for a milled s...
by johnpenn74
Mon Jan 02, 2012 10:28 pm
Forum: Live Steam
Topic: Large Boiler Flue Size
Replies: 25
Views: 4592

Large Boiler Flue Size

Large Boiler Flue Size Fellow Live Steamers, Who out there has attempted large flues in model boilers and what was the result? A few years ago I had a very interesting discussion with a guy named Metzger, who said he had an Atlantic that had only a few 2" flues. Claimed it could pull all day on only...
by johnpenn74
Mon Jan 02, 2012 4:28 pm
Forum: Live Steam
Topic: Link and Pin couplers
Replies: 30
Views: 6249

Re: Link and Pin couplers

Link and pin couplers. I finally got into some of my notes and here is what I found. Vulcan (Tifton Ga) Link and pin draft is 1.75" diameter. Porter Agent Lumber # 7 Link and pin on the pilot and back of tender is 2" diamter Porter Argent Lumber # 7 drawbar pin between loco and tender is 2" diameter...
by johnpenn74
Thu Dec 29, 2011 7:51 pm
Forum: Live Steam Marketplace
Topic: Allen Models Wabash Mogul #569
Replies: 7
Views: 3437

Re: Allen Models Wabash Mogul #569

Where approximately is the engine located?

JP
by johnpenn74
Sat Dec 24, 2011 11:26 pm
Forum: Riding Scale Railroading
Topic: Steam outline design
Replies: 5
Views: 2489

Re: Steam outline design

Coil Springs for suspension substitute. Sure, one method you can try is the coil spring between the journal box and the frame. For all intents and purposes this method has justification based on some prototypes. For example. Many European engines DO NOT have equalized suspention on their locomotives...
by johnpenn74
Sat Dec 24, 2011 9:29 pm
Forum: Live Steam
Topic: Link and Pin couplers
Replies: 30
Views: 6249

Re: Link and Pin couplers

Link and Pin. I am build a Mich Cal shay and someother industrial equipment with the some similar coupling needs. I have measured several industrial locomotives (vulcans in Columbia Tn and Tifton, ga. and they appear to have 2" pins in the draft. In 2.5 this scaled out to .416 which is kinda big for...
by johnpenn74
Tue Dec 20, 2011 12:29 am
Forum: Live Steam
Topic: What about your drill press?
Replies: 31
Views: 5057

Re: What about your drill press?

Got Drill Press??? I recently made an exhaustive effort to buy the "right" drill press for my shop. After looking at every thing on the market and everything I had used in the local vacational school and everything in my friends shop here's what I concluded. 1) Buy a floor drill press not a bench dr...
by johnpenn74
Sun Dec 11, 2011 2:07 am
Forum: Live Steam
Topic: Allen Mogul Project - Down to Details
Replies: 125
Views: 26428

Re: New to the Forums - My Project

John S,
You mentioned that your father had aspirations for a pacific in mind. Any particular prototype? Another RI engine maybe?
In 1987 he began working on an Allen mogul and had grander plans of building a pacific after the mogul was finished.
JP