80-ton three truck shay

[terry16]

 Are traction tires available for this locomotive and if so what is the part number? My shay jerks as it goes down my grade,could there be somthing else wrong?

[Hunt]

Q: Are traction tires available for this locomotive. . .
A: None made by Bachmann. Traction tires are not needed.

Q: My shay jerks as it goes down my grade,. . .
A: Jerking is normal on this model.

Q: . . . could there be something else wrong?
A: There is always that possibility. Depends on how severe and regular or irregular the jerking