Why use traction tires?

[darticus]

Is it neccessary to use these? Do some of you run without them? Ron

[ACY]

If you want to pull a decent size train, most locomotives need them.

[Albert in N]

Check the ads in Model Railroader for Bullfrog Snot traction tires (or go to www.bullfrogsnot.com).  I have not tried it on N scale, but hear that HO guys like it.  Also on my Lionel 027 MPC diesels with rubber traction tires, I use a little ACC (Super Glue) to secure loose traction tires.  Ideally, replacing worn traction tires is preferred, but these are sometimes not available.  I note that even Bachmann parts is out of N scale traction tires.  Frankly, I prefer N diesels with plain wheels and no traction tires.  However if you like steam, it is hard to have enough weight to operate without traction tires, so most N steam locos have them.