Diane,
I have always “known” Don’s Hunslet to be 2 1/2″ to 1 foot scale and have had completed frames and cylinders seasoning under the bench for far too long so you got me wondering. Correct, the drawings do not say. In the LLAS articles Don states that the scale is 2 1/2 times that used for a standard gauge prototype.
The frames are 2′ 4 3/16″ giving an overall length of around 2′ 10″ so comparing that to Maxitrak’s Hunslet which is 2″ scale and 2′ 1 1/2″ overall tends to support 2 1/2″ scale.
I don’t have any prototype dimensions to hand.
/edit
Found some – Holy War’s wheelbase is 39″ which equates exactly to Don’s Hunslet of 8 1/8″ at 2 1/2″ scale – conclusive enough for me.
Cheers, Andy
Edited By AndyP on 09/09/2011 14:50:28