Thanks Joe.  I'm using a combination of MTH RealTrax and Lionel Fastrax.  Mostly MTH.  I was concerned with the look of a longer loco making the curves...just wouldn't look right even if it did make the curve was my thinking.  I will stick with the shorter F units that I already have.  Was just wanting another diesel for freight service.

The train I'm running now is the Lionel Ski Train set I purchased in 2010 for our Dept. 56 display.  We have since sold our D56 collection however kept the train.  Been sitting on my desk for some time.  Decided to do something indoor with it and put up some shelving to run it around the garage. 

Not sure what all I will do with this, however will give me something to do in the winter months.   

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

Thanks!