Rear truck problem on forney 25476

[SteveB]

Just purchased a new 25476 and I am having trouble with the rear truck it keeps derailing on curves only.  Cant see any interference problem has anyone had this problem? could it possibly be hitting the coupler box?

[jestor]

What radius curves are you using?

[SteveB]

Thanks jestor, I'am using 18"" R.  Could that be the problem?

[jestor]

According to the OGR review, it handled 18" OK, but 22" is recommended due to how the rear end haughs out in curves.  I would look for something on the bottom of the fuel bunker that the truck might be hanging up on.

[C.S.R.R. Manager]

Hi Steve, the Forney can also be pulled off the track when pulling shorter freight cars.  I seem to recall that mine would do OK on 18" curves pulling something long, like a Bachmann passenger car, but shorter cars like the freight cars would cause the Forney to derail.  I  believe that 22" radius curves are recommended.

Manager

[SteveB]

Thanks for the help I will try 22" radius.

[jestor]

Does it derail if you run fuel bunker forward(backwards)? Some Forneys were operated this way. If operated in this manner, perhaps you might not have a problem using 18".