@GGG posted:I will be the contrarian here. I have left the original TAS units alone that have 10 ohm resistors. They seem to be high watts, and size of the smoke chamber matters. The smaller MTH smoke has two issue. Small element with lower watt rating, and a small chamber which increase effect of heat.
TAS is a large smoke chamber with larger element. Now if you love heavy smoke, then going to the 2 elements to drop effective resistance to 8 ohms, is the way to go. G
Guess we're possibly gonna have lot of smoke. Board has been set up with two MTH 16.8 ohm elements. Could you possibly explain if I am figuring the wattage wrong. As I understand it the MTH smoke circuit puts out a pulsed power to the smoke elements. But just saying that it put out 6v constant. I = E/R at 10 ohms a 6 volt suppy would draw .6 amp, and if W=IxE it would be 3.6 watt. If that is correct then I=E/R at 8 ohms would be .75 amps or 4.5 Watts. With that I agree that the two MTH elements will get hotter. (more watts). Twice now I have been told or thought I was being told the TAS 10 ohm resistor might be too high a wattage. It doesn't seem to be that way.
If the two MTH resistors put out too much smoke I can always put the 10 ohm back in. Either that or figure out how to install a smoke pot for manual control. One of the schematics should show that. I am a MTH tech but don't get a lot of MTH work up here in central PA. All my upgrades until now have been MTH Proto1 to Proto2 upgrades so I never had to consider the amp and watt ratings from a different smoke unit.
Next I have to either find a way to mount the ten pin engine harness upside right or I have to build a custom tender harness. I was going to get some shims to mount it while down at MTH today but didn't think it through in the right way and was thinking they wouldn't work. Now that I am back home I have to rethink this as they very well may. I will try to post some photos and video once it is finished. Have been on the road last two days so haven't had any progress during so.
Thanks, Forest.
