great northern 5120 and 511

[stanlte]

can some one tell me what is the smallest radius track I can used to run a great northern proto 2000 ho scale diesel emd e7a -a and a great northern GP30. Thanks

[jward]

i would not recommend going below 22r with the e7 and passenger cars. the gp30 will run on 18r with no problems.

[stanlte]

what about 15" radiaus for the gp30?

[jward]

not a good idea. stay with 18 and 22.