Track width & wheel gauge

[jerryl]

  Does anyone know the proper inside dimension of gauge#track in inches..I believe it's 45mm?  Also the measurement of the wheels between the flanges before they start to angle out.  I have a few trouble spots on my RR. The engine slows down & jerks it's way thru. No help when I cleaned the track.  The drivers measure 1.770  which is at least .032 wider than any of my rolling stock. Figured the track may be a little out of gauge in that spot & the combination is causing the problem. Grateful for any help I can get.   Jerry

[Anonymous]

Sounds a little wide.  From what I've read, Back to Back spacing should be 1.575 inches.

Art 

[jerryl]

that doesn't sound right. The inside dimension of the track is.1.790. At 1.575 the wheels would sit on the ties inside the rails.  Jerry

[Capt Bob Johnson]

Aristo has a handy dandy little tool for all that stuff including levels in one ez to use implement!

check wheels, track, switches, the whole shebang!

[cabbage]

According to Henry Greenly (and he should be a reliable source....)

Number 1 gauge: 1 inch 3/4trs or 45mm
Between Tyres: 1 inch 11/32nds or 39.5mm

regards

ralph

[jerryl]

  Thanks...Don't know what  "tyres" mean, but if it'sfrom wheel flange to wheel flange that's a difference of almost 7/16 of an inch.  (.406 ) Wheels would fall inside of the rails... Or am I not seeing this right.   Jerry

[GearDrivenSteam]

Just get the hammer out.

[Curmudgeon]

G1MRA standards (since just post WWII) and now nmra standards call for 1.575" back-to-back.

The thickness of the flange can be an issue, if overly thick.

Gauge is 1.777".

I will not use proprietary gauges.

The Kadee unit was built on a pre-supposed idea of what the nmra was going to do at some point.

I would have to actually see an Aristo gauge to measure it to know.

The old Sunset Valley units I had went in the trash, as they were so far out it wasn't even funny.

I use an old Dial Caliper. Works for track, wheels, handrails, all sorts of stuff.

Buy one, you won't regret it.

BTW. 1.777" less 1.575" leaves .200".

That's less than 1/8" (which is .125") per side for flanges.

Perfect.

[altterrain]

Jerry,

The figure of 1.575" back to back spacing is for the space between the wheels, the air space or backside to backside spacing.  {|<--1.575-->|}

-Brian 

[cabbage]

Well perhaps you make wheels using a different method in the US (I will ask my father) -but the the load bearing section of the wheel is called the tyre. Here in the UK it is shrunk onto the wheel.

Here is the data table from Henry Greenly's book.

http://homepage.ntlworld.com/sheila.capella/mls/specs.jpg

As I am currently building Edwardian Gauge 3 track (and I am out of rail again) it behooves me to use books and techniques from the 1920's. I am also going to build locos from 1920's plans (I have my first one).

regards

ralph