I was wanting to have a bridge at the top of a hill for my ho scale train. Do you have to use flexible track or can you angle the bachmann track up enough?

Only have the one engine right now. Flat track, about 15 cars. thanks,dave

Does it help to have more than one engine, say one at the front and one in the middle or rear? Will that increase speed? I have a union pacific bachmann and i think i would like fast! thanks in advance for the expert advice i know will come.

thanks

what kind of couplers do ll cars have? will they hook up to kaydee and others ok? thanks

Thanks. I know very little about trains except that i love'm, however i intend to rectify that shortly.  My time recently has been spent building wooden trains for my grandson. Again, thanks for the info.

new to trains and this board. Can a kaydee coupler be switched to a knuckle coupler to make a athearn match a bachmann?