Minimum Radius for Locomotives - myLargescale.com > Community > Forums

Reply
 
LinkBack Thread Tools
Old 01-13-2008, 06:59 PM   #1 (permalink)
Senior Member
 
Join Date: Jan 2008
Location: The Villages, FL
Posts: 567
Default Minimum Radius for Locomotives

Hi Gang,
¬*¬*¬*¬* I'm considering a foray into On30 inspired for now by Carl Arendt's micro layout concept and a gift of logging and mining shack kits from my friend Dave Rouse.¬* I imagine that I'll build a larger layout to more prototypical standards as time progresses.
¬*¬*¬*¬* I'd like to know the minimum radius required by Bachmann's Shay, Climax, Porter and Gas Mechanical locomotives for reliable running.¬*¬*
Thanks,
Tom¬*
Tom Bowdler is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 01-14-2008, 04:28 AM   #2 (permalink)
Senior Member
 
Join Date: Jan 2008
Location: Struthers, Ohio
Posts: 297
Default RE: Minimum Radius for Locomotives

Tom:

The Porters and gas mechanicals will easily handle 15" radius curves (probably even tighter ones), as will most of the shorter rolling stock. That's what I used on my first On30 pike. The 2-6-0s will negotiate 18" radius curves without difficulty, as will some of the others you mentioned, but for most of the larger locomotives (Consoldations, Forneys, etc.) you're better off going with wider curves if you can manage them in the space you have to work with.
__________________
Allan
Allan W. Miller is offline   Reply With Quote Quick reply to this message
Old 01-14-2008, 07:11 AM   #3 (permalink)
Administrator
 
Dwight Ennis's Avatar
 
Join Date: Jan 2008
Posts: 5,683
Default RE: Minimum Radius for Locomotives

I'm planning on 24" minimum on my layout. I'm told this is the min. for MMI's forthcoming 4-4-0's. While 18"R will, as Allan says, accommodate the locos you mention, as with any layout, using larger radii avoids future frustrations.
Dwight Ennis is offline   Reply With Quote Quick reply to this message
 
Old 01-14-2008, 07:13 AM   #4 (permalink)
Junior Member
 
Join Date: Jan 2008
Posts: 1
Default RE: Minimum Radius for Locomotives

Tom,

This link should tell you all you need to know:

www.geocities.com/loggingloco1/NineMile/On30Loco_n_Car_Radius.pdf

Jim
Sjack is offline   Reply With Quote Quick reply to this message
Old 01-14-2008, 11:38 AM   #5 (permalink)
Senior Member
 
Join Date: Jan 2008
Location: Struthers, Ohio
Posts: 297
Default RE: Minimum Radius for Locomotives

A very helpful link, Jim! Thanks for providing it.

I may try for 22" curves on my main line when I get to the point of finalizing things, but right now am going with 18" because I already have most of the track I need. I do have a Forney and a Consolidation (as well as several Broadway Limited Consolidations), and hope to get the 4-4-0 at some point, but my primary emphasis will necessarily be on smaller motive power
__________________
Allan
Allan W. Miller is offline   Reply With Quote Quick reply to this message
Old 01-14-2008, 07:51 PM   #6 (permalink)
Junior Member
 
Join Date: Jan 2008
Posts: 7
Default RE: Minimum Radius for Locomotives

Tom,

I have the Bachmann climax, porter, shay¬* in use, and the 4-4-0 on order.¬* My curves are mostly 22" - 24".¬* All my track is code 83 hand laid rail and ties using #5 fast track turnouts.¬* So far all is working well.

They say that if the 15" to 18" is layed well it will work for a/a units.¬* Not sure about the 4-4-0 on 15" r. as it is to new to the market.

Tom
tommatthews is offline   Reply With Quote Quick reply to this message
Old 01-15-2008, 11:35 AM   #7 (permalink)
Senior Member
 
Paul Norton's Avatar
 
Join Date: Jan 2008
Location: Ottawa, Ontario, Canada
Posts: 467
Default RE: Minimum Radius for Locomotives

The Bachmann gas mechanical requires the frogs to be powered or it will stall in the switches at slow speed. Caboose Hobbies sell a manual switch (ground) throw with tabs to wire the switch including the frog. Tortoise switch throws also allow the frog to be wired.
__________________
Paul Norton
Ottawa Valley GRS
Paul Norton is offline   Reply With Quote Quick reply to this message
Old 01-15-2008, 05:36 PM   #8 (permalink)
Senior Member
 
Join Date: Jan 2008
Location: The Villages, FL
Posts: 567
Default RE: Minimum Radius for Locomotives

Thanks for the info guys,
I'll probably begin building the layout when I get back from Diamondhead. What fun lies ahead for me!
Tom
Tom Bowdler is offline   Reply With Quote Quick reply to this message
Old 01-15-2008, 08:53 PM   #9 (permalink)
Administrator
 
Dwight Ennis's Avatar
 
Join Date: Jan 2008
Posts: 5,683
Default RE: Minimum Radius for Locomotives

Caboose Hobbies sell a manual switch (ground) throw with tabs to wire the switch including the frog. Tortoise switch throws also allow the frog to be wired.
I bought a 10-pack of these...



It's manually operated with a pushrod through the fascia, and has a set of built-in DPDT contacts for frog power routing.

Available here.
Dwight Ennis is offline   Reply With Quote Quick reply to this message
Old 02-16-2008, 09:49 AM   #10 (permalink)
 
Join Date: Jan 2008
Posts: 1
Default RE: Minimum Radius for Locomotives

i have the bachman 2-6-0 and the shay, and both do 18" turns no problem.
electric130 is offline   Reply With Quote Quick reply to this message
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the myLargescale.com > Community > Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in


Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Curvature vs. Minimum Radius rhyman Track, Trestles, Bridges and Roadbed 15 05-15-2010 11:00 AM
Minimum radius? Jack - Freshwater Models Track, Trestles, Bridges and Roadbed 5 04-12-2010 05:40 PM
indoor layout minimum radius Rmay Beginner's Forum 16 11-28-2009 03:26 AM
Question about minimum radius CliffyJ Track, Trestles, Bridges and Roadbed 8 08-16-2009 06:15 PM
Minimum Radius Curve for USAT SD-40 jr747 Product Reviews 10 03-08-2008 08:46 AM

Powered by vBadvanced CMPS v3.2.3

All times are GMT -4. The time now is 11:17 PM.



Powered by vBulletin® Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.