Lionel Milk Car can dispensing on my command control milk car

Sounds like a coil is trying to pull in and doesn't have quite enough voltage to finalize to process.  I don't have any milk cars and am not sure what operates them, but something like a solenoid might be used.  If so that is the coil part.

Probably need to increase the voltage. Try 8 or 9 volts, increasing until chatter stops.

Mine won't do anything but chatter less than 10 volts. Chatter is not enough volts..

Thanks guys.  I will increase voltage.

Will the ERR modified milk car operate properly at 18'volts, or will the cans be embedded in the wallboard when launched?

You can control the voltage to the solenoid with the ERR board, so you can tune the ejection to work properly.

Oh. Thanks.