Railking 4-8-4 S.P.

i believe Gunrunner John might be able to help you Mark.          Seems to me there was a post about the black and white tape not long ago.

https://www.mthpartsandsales.com/shop

@Dallas Joseph posted:

i believe Gunrunner John might be able to help you Mark.          Seems to me there was a post about the black and white tape not long ago.

@Vernon Barry posted:

https://www.mthpartsandsales.com/shop

BE0000151

FLYWHEEL TACH TAPE / FOR 33.7mm, 31.8mm, 30mm & 27mm DIAMETER FLYWHEELS / PS 3 UPGRADE KIT / PS2 ALSO

$2.00/ea

Thanks, I thought that also he gave me the name of George down in Va. he made repairs to a couple boards of mine will go with the tape see if that works first thanks guys.  God Bless our troops in Iraq.

@Sitka posted:

Thanks, I thought that also he gave me the name of George down in Va. he made repairs to a couple boards of mine will go with the tape see if that works first thanks guys.  God Bless our troops in Iraq.

It will work because your symptoms match the known fault condition.

You have a Loco-sound engine. This is semi related to PS2 and uses some of the same wiring and tachometer sensor. Loco-sound, PS2, and PS3 engines- especially steam use the tachometer system (optical sensor, flywheel with stripes) to determine both speed and distance- which is how it times the chuff sound and matching puffing smoke.

When you removed the failing tape- the system no longer knows how fast or how far the motor and known gearing of the wheels has turned to chuff and puff. So again at idle (not moving) the smoke fan is on, however when you begin moving it stops waiting for the tachometer distance and number of stripes to chuff and puff the fan. Again, you disabled that when removing the striped tape from the flywheel.

@Vernon Barry posted:

It will work because your symptoms match the known fault condition.

You have a Loco-sound engine. This is semi related to PS2 and uses some of the same wiring and tachometer sensor. Loco-sound, PS2, and PS3 engines- especially steam use the tachometer system (optical sensor, flywheel with stripes) to determine both speed and distance- which is how it times the chuff sound and matching puffing smoke.

When you removed the failing tape- the system no longer knows how fast or how far the motor and known gearing of the wheels has turned to chuff and puff. So again at idle (not moving) the smoke fan is on, however when you begin moving it stops waiting for the tachometer distance and number of stripes to chuff and puff the fan. Again, you disabled that when removing the striped tape from the flywheel.

Vern Thanks works like new! I know I had one but I misplaced thanks again. Mark