Hi Duncan.
Bob posted this request on my behalf because I was having trouble with my login. Thanks for the info. The existing springs that we have (which are too short) are 6" long with an i/d of 1 5/8" and o/d of 2 5/16. I reckon they ought to be at least 6 1/2 to 6 3/4" long.
Are you sure of your i/d ? If so, they must be made of very thick wire....
My understanding is that the standard engined DHC is 80lbs heavier than the normal 4-4. But my guess is that they used the same springs.
Best
Ambrose
