nobody have a guess!

I am new at this, I have the above engine and I am wondering how many cars max can I or should I pull on a flat main line. Thanks...Boxman

Thank you very much

thanks GlennW, my train set is the thunder mtn. is their a specific part# for the  coupler assembled to the truck and wheels all ready to attach to rolling stock. My kid can't assemble the small couplers and wheels

can you buy the coupler and wheel set complete and if so what would be the part#...Boxman