G scale Sectional Track

 

Note, the numbers below are APPROXIMATE, not exact, there is variation between manufacturers. Check the exact numbers on the manufacturer's site.

Pick your R number

 

"R"
  number  

  LGB
  diameter  
feet

Piko
  diameter 
feet

 Train-Li
  diameter 
feet		   Train Line 45 
diameter
feet		  

LGB
  radius  
feet

 Piko
  radius 
feet		   Train-Li  
radius
feet		   Train Line 45 
radius
feet
 R1  4' 4'       2'  2'    
 R2  5'     6'    2-1/2'     3'
 R3  8' 6' 6' 8'    4' 3' 3' 4'
 R4 ~11-1/2'    8'      5-3/4'   4'  
 R5  15' 8'        7-1/2'  4'    
R6                  
R7   10-1/4'         5'+    

 

 

Pick your diameter/radius

 Diameter 

Feet 

 Radius 

Feet

LGB
R
 Number 

 Piko
  radius 
feet		 Train-Li
  diameter 
feet		   Train Line 45 
diameter
feet

Aristo Craft

 USA Trains
4 2 R1 R1     4' 4'
5 2-1/2  R2     R2 5'  5'
6 3   R3 R3 R3    
6-1/2 ~3-1/4         6.5'  
8 4 R3 R5  R4   8'  8'
9 4-1/2         9'  
10   5          10'  10'
10-1/4  ~5   R7        
11-1/2 ~5-1/2  R4       11.5'  
12-1/2 6-1/4         12.5'  
14 7         14'  
15 7-1/2 R5       15'  
16 8           16'
16.5 ~8-1/4         16.5'  
20 10         20' 20'

 

 Link to Piko track planning guide:  https://cdn.shopify.com/s/files/1/1960/4221/files/99350_G-Track_Flyer.pdf?9757276037842777937

 

Link to LGB:

 

Notes:

  • There is no R4 curved track from LGB
  • There is no even numbered curved tracks from Piko

What a mess huh?