Massoth pulsed smoke generator stops at speed

John Godman

John Godman

Registered
22 Apr 2017
1
0
52
Maryland
Hello,

I have a few of the Massoth Pulsed Smoke Generator 8413501 installed in various locos --- I love them. But I'm having a probolem with one, and I thought to ask the forum if you've ever seen this or have any ideas. It is installed in a Bachmann 3-truck Shay exactly as described here: http://wiki.massoth.de/index.php/Bachmann_Three_Truck_Shay

Everything works fine at slow speeds, but when I accelerate the locomotive to medium or faster speed, the smoke generator stops producing smoke. I can hear the fan pulsing in time to the engine, but no smoke comes out. If I turn off the smoke function and turn it back on, it starts smoking again, or I slow down the engine, it will start smoking again.

Does anyone know if this might be a programming issue I can fix? Wiring? Something else? Please take a look at these videos I took of the engine operating on a test stand.

Initial video showing the problem:
https://vcentra.box.com/s/n1al3yl11d1deoj4uxysdqq6v7s4mxav

Additional video showing operation with meter inline to show current draw:
https://vcentra.box.com/s/5vmkwjoscbyc6vyf18dvnqvzw3zfmvm6

Thanks very much in advance for any help or advice you can give!

-John

jgodman (at) vcentra (dotcom)
 
PhilP

PhilP

G Scale, 7/8th's, Electronics
5 Jun 2013
21,801
2,673
Tamworth, Staffs.
If it stops after a while.. My guess would be it is overheating, and shutting off. - Else when it gets hot, there is a break somewhere.. As it warms up, everything expands, breaking the circuit.

Can't watch the videos here..
 
idlemarvel

idlemarvel

Registered
13 Jul 2015
1,419
627
Ascot
Watched the videos, interesting problem, not one I have seen on mine. How are you generating the pulses? With decoder pulse simulator? Or connected to wheel rotation? Or load dependent? Maybe you could adjust CV65 to reduce the heating?
 
LGB333

LGB333

Member
Hello,

I have a few of the Massoth Pulsed Smoke Generator 8413501 installed in various locos --- I love them. But I'm having a probolem with one, and I thought to ask the forum if you've ever seen this or have any ideas. It is installed in a Bachmann 3-truck Shay exactly as described here: Massoth WIKI | Massoth WIKI

Everything works fine at slow speeds, but when I accelerate the locomotive to medium or faster speed, the smoke generator stops producing smoke. I can hear the fan pulsing in time to the engine, but no smoke comes out. If I turn off the smoke function and turn it back on, it starts smoking again, or I slow down the engine, it will start smoking again.

Does anyone know if this might be a programming issue I can fix? Wiring? Something else? Please take a look at these videos I took of the engine operating on a test stand.

Initial video showing the problem:
https://vcentra.box.com/s/n1al3yl11d1deoj4uxysdqq6v7s4mxav

Additional video showing operation with meter inline to show current draw:
https://vcentra.box.com/s/5vmkwjoscbyc6vyf18dvnqvzw3zfmvm6

Thanks very much in advance for any help or advice you can give!

-John

jgodman (at) vcentra (dotcom)

Hi - I just read this older 2017 posting and wonder if you ever solved the pulse unit smoking issue?
Thanks
Tom
 
R

R. Wolfe

Registered
25 Jun 2017
31
7
52
Pennsylvania
I had a similar problem. It was a CV adjustment on the Main decoder and not the smoke generator. Something to do with the pulse generator setting. It was on a massoth XLS. I no longer have the locomotive or paperwork so I don't remember the CV#. The setting had to be set to a value of 19 as far as I can remember. Hope this helps.