LGB Track Radius

[tgood]

Greg:Thanks for the reply.Just got an answer from North American LGB and there were 3 yes 3 classifications of LGB track over the years and the track I have has 1175 stamped on the ties underside.

They said that it was late 70's early 80's LGB track designation. 1175, R3, 1600 all mean the same just different management and years

Cheers,tgood

 

[Greg Elmassian]

It means you should use google....

 

https://www.ebay.com/p/LGB-G-Scale-No-1600-R-1175mm-Curved-Brass-Track-Lehmann-Germany/670959839

 

1175 mm long section of an R3 curve which is part number 16000 ...

Honestly it means you are not reading something clearly...

R3 curve, 16000 series, 1175 mm long per section...

The "R" does not belong to the 1175, in the places I found it, the R followed the 1600 / 16000 and even that is wrong, its not 16000R but it's R3... and 1600/16000 is the part number.

 

Did you get this terminology from ebay? It's wrong.. but now you know.

 

Here's a chart of LGB "R" numbers and part numbers https://elmassian.com/index.php?option=com_content&view=article&id=328&Itemid=366

 

Most people don't care about the length of a curved section, just how many sections make a circle, and what is the diameter/radius.

 

Regards, Greg

[tgood]

OK What does R1175 stand for in LGB track

[ttrigg]

ExP_Razor

Where would LGB's 600mm curves be on this scale, are they even smaller than R1 or are they shorter sections of the 1200mm maybe?

The current track sections I have are stamped R=600mm (like what I'm addressing above) and R=765mm. Although I may be answering my own question an old 91/92 LGB catalog identifies R1 as 60 cm, R2 as 76.5 cm and R3 as 117.5 cm.

There have been a few times when radius has been used to describe curvature instead of diameter, especially during the early "Chinese" track. I believe you are looking at "Chinese LGB" which has a radius of 60 centimeters, which equals a diameter of 1200 millimeters. So in fact R1=R1 whether measured in radius or diameter whether measured in cm or mm. It's all the same size.

[ExP_Razor]

 Where would LGB's 600mm curves be on this scale, are they even smaller than R1 or are they shorter sections of the 1200mm maybe?

The current track sections I have are stamped R=600mm (like what I'm addressing above) and R=765mm. Although I may be answering my own question an old 91/92 LGB catalog identifies R1 as 60 cm, R2 as 76.5 cm and R3 as 117.5 cm.

[ttrigg]

Greg Elmassian

 Was there ever an R4?

Yes (and No).  For a couple of years they had a switch that had an R4 turnout (around 3500mm) and a single piece of R4 curved track to "parallel the main line".  The R4 curve rail was NOT sold seperate from the switch. They discontinued the R4 about '82~'85? (could have been earlier)

 

[Greg Elmassian]

I have made a table that has all this info for quick reference:

http://www.elmassian.com/trains-mainmenu-27/track-mainmenu-93/lgb-track-a-switches

May be helpful.

Regards, Greg

[vsmith]

kstrong

From LGB's web site (in terms of diameter, not radius)

R1 = 1200 mm
R2 = 1560 mm
R3 = 2390 mm
R5 = 4640 mm

Tranlated into imperial:

R1 - 47.2" diameter (2' radius)
R2 - 61.4" dia (2' 6' rad)
R3 - 94.1" dia (3' 11" rad)
R5 - 182.7" dia (7' 7"rad)

Later,

K

Tranlated into even plainer English:

R1 - 47.2" diameter (2' radius) = 4' diameter
R2 - 61.4" dia (2' 6' rad)          = 5' diameter
R3 - 94.1" dia (3' 11" rad)       = 8' diameter
R5 - 182.7" dia (7' 7"rad)        =15' diameter

Yes they are rounded up and generalized, but it makes remembering them alot easier for dummies like me

[kstrong]

Not with LGB. Other manufacturers, yes, but be forewarned that their "R" designations may or may not coincide with LGB's or others'. There doesn't seem to be any kind of standardization relative to that. (Which should shock and surprise absolutely no one.) 

Later,

K
 

[Greg Elmassian]

 Was there ever an R4?

Is there anything larger than R5?

Thanks, Greg

[kstrong]

From LGB's web site (in terms of diameter, not radius)

R1 = 1200 mm
R2 = 1560 mm
R3 = 2390 mm
R5 = 4640 mm

Tranlated into imperial:

R1 - 47.2" diameter (2' radius)
R2 - 61.4" dia (2' 6' rad)
R3 - 94.1" dia (3' 11" rad)
R5 - 182.7" dia (7' 7"rad)

Later,

K

[JGozzo]

What do all of the LGB Track Raduis stand for in feet?  I.E...R1....R2...R3....etc?