I have a radio throttle for my layout which has worked fine up until my IM tunnel motors arrived. As soon as I throttle up the locomotives speed off immediately at high speed. I have been doing some experimenting and have found I need to add approx 100 ohms resistance to the ac in of the throttle to slow down the locos. To be sure I'm going to purchase a potentiometer to get it right so i can run all trains at reasonable speeds. Has anybody else found similar issues with their IM tunnels?
I did some experimenting and found that 35 ohms in series with the throttle output allows good control of the locomotive, i only had a 3 watt optentionmeter which burnt out when I tried to run 4 kato locos as a test lol hmmmm all the smoke got out. I will need approx 20 w pot now to install permanently.
Well this theory doesnt work too well if you put a resistance in series with the cab control when you run multiple units the voltage drop becomes too high and multiple units will not run. It seems the only solution will be to put resistors in each tunnel motor which is something I'm not really keen to do.
I am not much of an electron person. I have not had this problem with the Aristo Craft throttle. I use an MRC 9000 for a power source. I probably don't understand the problem. I consider the TMs to be compatible with all the Atlas slow speed motors. True, none of the slow speed motors are compatible with the older Kato, IMHO.
