any of you guys pulling 2rail freight cars with your scale trains?

I run some 2 rail scale freight cars. Some old allnation and athern cars. I run on Scaletrax and use an NMRA gauge on the track and wheels. I replace the wheels with scale wheels from NWSL that have a flang a smidge larger than most 2 rail wheels, but much smaller than 3 rail wheels.

I used to run a lot of 2R wheels on my switching layout, but it was too problematic with all the switches. Forward was OK, but a lot of troubles shoving through the Ross switches. I swapped all the wheels back to hi rails flanges and they are hassle free now. I still run fixed pilots, Kadee couplers, and will buy 2 rail cars, but they get converted to hi rail wheel sets. 

It depends on which brand and type of 3-Rail track & turnouts you use. My layout is all Atlas O, but I have modified the guard rails on each turnout in order to run 2-Rail SCALE wheels equipped freight cars & cabooses.

I do it all the time. All of the Atlas cars I've purchased over the last few years have been two-rail cars and they work fine. Some caution has to be taken to make sure that the cars up front aren't too light which can cause string-lining. We use Gargraves and Atlas track with Ross turnouts. Backing moves aren't too bad but I do get the occasional uncooperative car that wants to derail.

Did they all have Kadee's?

Did some of the cars have truck mounted couplers?

Or trucks where the mounting screw is off set and not centered between the axles?

2 rail looks more accurate scale size to run with my Scale O gauge PRR steamers..

But, are you talking about freight car SIZE, or the actual 2-Rail WHEELS?

Yes all Kadees, all body mounted. No offset mounting screws. I do have a lot of switches back to back, and one right after another on the switching layout.

The only difference between 2 and 3 rail scale sized cars is the couplers and wheels. You'll notice the difference in couplers a lot more than the wheels.

I mix my three rail scale and two rail cars all the time on my three rail layout at home since my two rail layout is still in the design stages.  I am running on Gargraves track and switches without issue. 

I used to run a lot of 2R wheels on my switching layout, but it was too problematic with all the switches. Forward was OK, but a lot of troubles shoving through the Ross switches. I swapped all the wheels back to hi rails flanges and they are hassle free now. I still run fixed pilots, Kadee couplers, and will buy 2 rail cars, but they get converted to hi rail wheel sets. 

 

I'll second that.  If you switch a lot you will experience more derailments running RP-25 wheel sets on 3 rail track.  For maximum operational reliability Kadee couplers with 3 rail wheel sets is the way to go.  And it is the 3 rail scale thing to do. 

the size hotwater...plus there cheaper in price then the 3rd rail freight cars..some of the 3rd rail not the correct size for scale O..but I also like the wheels too..havent had any troubles running them on tube track..as long I not high balling it..

Just my opinion, but I believe you are confusing folks when you use the term "3rd rail freight cars". Remember that "3rd Rail" is a division of Sunset Models, and really haven't made many freight cars in the last 15 to 20 years.

Now, if you are referring to 3-Rail SCALE freight cars, such as Atlas O, MTH Premier Line, Weaver, or some of the scale Lionel freight cars, then that is a whole different subject. Also, for what it's worth, Atlas O 2-Rail SCALE freight cars are ALWAYS more expensive than the exact same 3-Rail SCALE freight car.

sorry Hotwater..my falt.. I ment 3-rail freight cars..been picking up some weaver center flow hopper cars and others.....