Need help on standards

[Jim Banner]

There are details on cutting your own wheel and track gauge at the link below.  Scroll down almost to the bottom of the page.

http://members.shaw.ca/sask.rail/construction/lsbuild/lstrack.html

[JerryB]

Bill:

The 1:20.3 clearance gauge I mentioned above is not from the NMRA. They don't have any LS ones available.

My gauge is laser cut from 1/4" smoke colored plastic and I believe is based on RGS standards. These gauges were manufactured by (or for) Jonathan Bliese who does business as Electric & Steam Model Works. He can be contacted through his website at:

http://www.rctrains.com/

I think the gauges are currently out of production, but Jonathan might know if one is available and / or might consider running a new batch if the demand is there. I think there are going to be quite a few clearance issues with the arrival of the K27 on RRs that were previously running only logging and other small equipment, so perhaps the time is right.

Happy RRing,

Jerry

[taz-of-boyds]

Chesticus,

I fiddled with the NMRA standards a bit.  The ones that you may be most interested for track spacing are:
- S-8 Track Centers (mentioned before)
- S-6 Interurban Clearance and Track Centers

This one has some interesting discussions and reccomendations about what generally fits minimum radius from streetcars on up.
- RP-11 Curvature and Rolling Stock

I looked at the S-8 valuse and scaled them to the three scalles you listed:

First half of table:

Radius-Prototype   all ft   Tang.   1146   574
Prototype centers      13   13   13.25
               
G gauge Class II  - values in inches               
scale   radius   M(*)   Tang.   677   339
20.3   centers   8.9   7.7   7.7   7.8
               
scale   radius      Tang.   611   306
22.5   centers   8.0   6.9   6.9   7.1
               
scale   radius      Tang.   474   238
29   centers   6.2   5.4   5.4   5.5

second half of table:

383   288   231   193   166   146   131
13.5   14   14.5   15   15.25   15.5   16
                  
                  
226   170   137   114   98   86   77
8.0   8.3   8.6   8.9   9.0   9.2   9.5
                  
204   154   123   103   89   78   70
7.2   7.5   7.7   8.0   8.1   8.3   8.5
                  
158   119   96   80   69   60   54
5.6   5.8   6.0   6.2   6.3   6.4   6.6

Does this help any?
Charles

[Loco Bill Canelos]

Thanks Jim. Jerry & TAZ,

Just what I need to make my own!!!

Many thanks to all!!

[glennk28]

Since these scales all use the same track and wheel standards, any gauge for #1 gauge track and wheels will do.  The larger scales--O and up--do not have clearances on the "Official" gauges.  Some independent manufacturers have done clearance gauges, but these do not reflect standards--more "Recommended Practices" 

[hobo]

Before you attempt  to make your own track gauge for 45MM/#1/Large Scale track.   

Aristo-Craft makes one that includes a level to not only check the track and wheel gauge, but checks the track for level as you go.

The gauge can be found at most Aristo-Craft retailers, and is on their site.
The Aristo-Craft model number is 11906.

Russell