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Reply to "PS2 Upgrade - wild speed increase in DCS mode"

on the tach gap, I had a couple of G scale engines now that the gap appeared to be within spec. Yet the engine ran way too fast. I simply made the gap smaller, and those engines ran correctly.

 Again I'll state that I'm not sure what makes certain ones seem weaker. Maybe it's the sensor or maybe the circuitry? I had to get the gap tighter and they then worked. The G scale diesel motor blocks on Dash 8s are plastic and the gap is fixed. I had thought about some type of warping condition that throws the spacing off?

 On the newest PS3 Dash 8 models, I feel that the gap is on the outer limits to start with. So any greater gap variation makes it out of spec. Either that or I had the only one version that was like this? The last PS2 version that arrived right before the PS3 also had this condition. Both were brand new and ran the exact same speeds too fast. I also had a third used one, that all 3 I modified to a smaller gap. I think they would do like 54MPH when set to 30MPH? I can't remember exactly.

 Years ago I had a PS2 install from a donor that ran too fast. I swapped out the tach reader and it was fine. Later I installed that reader into a different engine, and that also worked. So I was left wondering about some weaker condition with the boards? I had no way to ever narrow down the exact causes. Same with a BCR that one board did not work with. Put that into a different engine and it worked. Put the receiving engine's batteries into that donor bcr donor and that also worked??

Last edited by Engineer-Joe

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