I realize there is another area for O questions, however there are no responses on questions in that area.

I'm interested in purchasing a SD90 however it navigates O-31 curves. Does that mean it will not navigate a 027 curve?

Please don't kick me too hard....I'm a large scale guy putting a O scale around the ceiling of my garage.

Thanks for any information!
.

This is a quick and short question.  Do the Bahcmann O Scale Trains offer a sound unit on them?

Thanks!