@Rockster posted:Well my table is going to be 8X8. So I can use O-84. I think bigger is better. 😂
Did you get the original box and instruction manual with the loco? Minimum curve is usually printed on the end flap box label, also likely in the owner's book. Also, if you look up the loco by item number on www.lionel.com, the radai will be mentioned in the advertising copy.