Decoding Steam Locomotive Markings

[Yankee Joe]

This is a picture of the #302 Georgia RR 2-8-2 Mikado in the Augusta museum. What do the markings under the road number mean? I know F63 is the class but what do the other numbers mean?

 

[bcp]

Answers here:

https://www.steamlocomotive.info/vlocomotive.cfm?Display=360

http://rgusrail.com/gagr302.html

27/30 is cylinder bore and stroke.

53.2 is tractive effort in 1000's.

F63 is the class, as mentioned. I suspect F means 2-8-2 and 63 is driver diameter.

Bruce

 

[Bill Anderson]

Thanks. I deleted my reply since it was pretty far off base.

 

[Yankee Joe]

Thanks Bruce and Bill, I appreciate the help. This started because I have a unmarked Pacific Light 4-6-2 I wanted to mark as #254 from the Georgia RR. I have everything figured out except the numbers on the side of the cab below the large 254. Was hoping it was the same as the Augusta #302 2-8-2 Mikado but now I know its not. Based on the information I found over on steam locomotive dot com #254 iIm guessing should have P60 22/28 31.9. Does that sound right?

Thanks Joe