I need to convert my favorite freight and passenger cars for use at our club to steel wheels. However, as evidenced by the latest article on ExactRail, I need some help in determining which wheels for what cars. I have seen 28 inch, 33 inch, 36 inch and God knows what other inch is coming down the line. 

Simply put, what size wheel for what type of car and/or what manufacturer? I don't want to by trucks and wheels together - just wheels. Is there some simple guideline?

Thanks.

I just bought this engine, thinking I was getting a Bachmann Spectrum 0-6-0T.  Now that I have it, I don't think that's what I have.  Here are the photos from ebay:

I noticed that Bruce Chubb's layout uses numerous Kadee electromagnet uncouplers. I was wondering how Bruce powers them - e.g an AC or DC power supply with push buttons on local control panels, or using a timer circuit so that the electromagnets are not burned out because a button was pressed for too long a time. On one layout I had (only about 13' x 18') I used a common AC power supply for all push buttons/electromagnets, but when a button was pressed an annoying buzzer sounded, reminding the operator that the electromagnet was still energized.

Thanx,

I have recently shaved a brand new 44tonner body down to slip inside my old MDC boxcab and IT FITS like a glove.

Having mucked about with the crappy MDC drive for too long,trying to get it to work, I bit the bullet and got a new single motor DCC'ed 44tonner, cut the handrails width off the sides and the grilles off the hoods and a bit of a shave here and there,got it to fit.