Lionel Milk car history question

See this:  http://www.tandem-associates.c...72_operating_car.htm

The older cans do have magnets on the bottoms.   You can run it on DCS but if you are using track power at 18V to power the UCS the cans come flying out of the car.  You should use aux power around 12 volts.  You definitely need an operating track section. 

There is one alternative and that is the TMCC conversion from ElectricRR that allows you to run command at 18 volts and operate the car anywhere on the track and I think can be used with DCS. You would not need the operating track then.

Here is the link:

http://www.electricrr.com/Manuals/LioMilkCar.pdf

There are two basic types of milk cars that each use a different milk can. They are not interchangeable.

027 gauge milk cars (3462, 3472, 3482) use metal cans with small magnets pressed in the bottom.

O gauge milk cars (3662, 3672) use plastic cans with a non-magnetic metal insert pressed into the bottom.

As far as I know, all Modern Era Lionel milk cars are the "O" gauge type, using the plastic milk cans.

I think that sums it up, thanks guys

I should have mentioned that the Postwar "O" gauge milk cars have a dashpot to slow down and smooth out the action of the mechanism. The "027" cars do not.
I think the dashpot more or less elminiates the need for the magnets.

In my experience, the "O" gauge cans do not fall over when the car is operated in the proper voltage range.

I do not know whether current Modern Era Lionel cars still use the same mechanism. They have a tendancy to replace the original mechanism designs with new ones using can motors.

In the 3662 the action of the milk delivery can be adjusted by changing the viscosity of the grease in the dashpot.  (I had to look up "dashpot."  Turns out it's that cylinder and piston behind the can delivery chute.)

Each time I get a new (to me) piece of postwar gear I am amazed by the genius of Lionel's engineers.

Pete