20 is said to weigh 85,000lb (I think she is heavier than that based on her shipping weight from Strasburg. ) 346 is around 74,000lb. 20 was classed as a T-19, but with a longer main rod than 346 she will have a higher tonnage rating. 20 likes to run faster than 346, I can see why they didn't like using the T-19s with the C classes.
Our curves are pretty much all 28° with a very short section at 30°. Pretty much the same as the RGS and DRGW.
Guymonmd I forgot to mention that 20 has her hooter whistle. Same one she had at the end of service.
Jeff Taylor
CRRM curator of equipment and rolling stock.