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Post by middledivision on Mar 6, 2020 6:32:53 GMT -8
Anyone know where I can buy a Bachrus model MTS-DCC50 speedometer?
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Post by jonklein611 on Mar 6, 2020 7:00:43 GMT -8
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Post by Paul Cutler III on Mar 6, 2020 8:38:08 GMT -8
Don't bother. My club got one and it didn't work that well.
We have a speedometer on our layout that does work well, and it's based on IR sensors and elapsed time. My Atlas H24-66 goes 80mph according to IR-based speedometer, but the Bachrus wouldn't go much above 50mph with that same engine. It appears that the sensor wheel that measures speed just slips vs. the drivers when engines run fast. I tried putting Bullfrog snot on the sensor wheel, adding a layer of masking tape to it, etc. No matter what I did, the sensor wouldn't read high speeds consistently. If you push down on the engine, the speed sensor increased, but that's hardly accurate.
It's too bad because this should be the answer to all our speed matching needs.
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Post by middledivision on Mar 6, 2020 9:29:22 GMT -8
Want to sell the one from your club?
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Post by Paul Cutler III on Mar 6, 2020 15:06:25 GMT -8
I'll have to check with the member that donated it. He may want it back to tinker with it.
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Post by middledivision on Mar 6, 2020 16:45:48 GMT -8
Let me know. Thanks
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Post by edwardsutorik on Mar 7, 2020 12:30:33 GMT -8
It appears that the sensor wheel that measures speed just slips vs. the drivers when engines run fast. I tried putting Bullfrog snot on the sensor wheel, adding a layer of masking tape to it, etc. No matter what I did, the sensor wouldn't read high speeds consistently. If you push down on the engine, the speed sensor increased, but that's hardly accurate. It's too bad because this should be the answer to all our speed matching needs. How about converting to a gear drive output--won't get any slippage then. Ed |
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Post by Paul Cutler III on Mar 8, 2020 19:37:46 GMT -8
Ed,
What do you mean? The sensor doesn't appear to be replaceable. IIRC, it's a spinning magnet sensor that counts the pulses to calculate speed. Yanking off the smooth wheel would probably destroy this.
Also keep in mind that the sensor wheel must remain the same diameter to keep the speed reading accurate.
A nice idea, but I fear it is impractical in this situation.
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Post by jonklein611 on Mar 9, 2020 6:53:22 GMT -8
It appears that the sensor wheel that measures speed just slips vs. the drivers when engines run fast. I tried putting Bullfrog snot on the sensor wheel, adding a layer of masking tape to it, etc. No matter what I did, the sensor wouldn't read high speeds consistently. If you push down on the engine, the speed sensor increased, but that's hardly accurate. It's too bad because this should be the answer to all our speed matching needs. How about converting to a gear drive output--won't get any slippage then. Ed The slippage is between the locomotive's wheel and the speedometer's wheel. |
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Post by edwardsutorik on Mar 9, 2020 8:03:01 GMT -8
I only looked at the picture in the link, which doesn't reveal anything about the actual speedometer.
I just now did a search on the subject, and I do see how it works. Now. Yup, that's a problem.
Ed
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Post by middledivision on Mar 9, 2020 8:30:50 GMT -8
Paul, let me know what the guy wants to do.
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