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Some time about a year ago I sent several PS2-3V boards to a friend who has the Pro Protosounds loader among the sound sets they installed, two of the boards, received PRR K-4 sounds. Each board received different K-4 sound sets. 20-3296-1 and 20-3125-1  So I now have one of the locos ready for the tach strip and since I don't know how many stripes the original locos/ sound set had I did what I had done in other cases where I did not know this I put on the .050 tach strip 48 black stripes on a 30mm flywheel. I think is the finest spacing available probably due to the resolution of the tach reader. However the loco starts moving in the 1mph detent on the remote at around 20smph and only one chuff every 3 revolutions of the drivers. Normally I would simply do a ratio of the timed actual speed to the speed one detente on the remote to figure the number of stripes the permanent tach strip should have. However since I am already at the finest stripes the tach reader can read going down in the number of stripes would make the loco faster and it is already way to fast. I have tried both of my K-4 boards in the loco with exactly the same results.  ALSO; The sounds are way too low and I am wondering if the sound files in each board may be somehow corrupted. My next move might be to install a PRR G5 board or reinstall the sounds with my consumer loader. Except for speed, chuff rate and low volume everything else is working fine with the K-4 boards. Any suggestions ?  Another thought I had is both of these boards came from Diesel locos. Might the PS2 boards have a factory loaded file analogous to the chain files in PS3 boards.                  j                                    

Last edited by JohnActon
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@Jon G posted:

The number of black stripes on the flywheel is 24, regardless of flywheel size.

As for the sound volume, PS2 3v and PS3 boards use 4 ohm speakers.

Jon, Thanks for the reply. I started out with 24 black stripes and the loco was way faster than now and that is why I tried the 48 stripes and it did slow down but not near enough. The speaker is 4ohms.         j

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