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Thread: Portable Tach Question
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07-25-2016, 07:32 PM #15000 RPM
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Portable Tach Question
I am installing one of those small tach's on my 225 Sport XS (2 stroke) to record operational hours. It has a wire that you wrap around one of the plug wires. Where the motor is a 6 cylinder I have a choice of several modes...
1. 1P1R= 1 SPARK PER 1 REV
2. 2P1R= 2 SPARK PER 1 REV
3. 3P1R= 3 SPARK PER 1 REV
4. 4P1R= 4 SPARK PER 1 REV
5. 6P1R= 6 SPARK PER 1 REV
6. 3P2R= 3 SPARK PER 2 REV
7. 5P2R= 5 SPARK PER 2 REV
8. 1P2R= 1 SPARK PER 2 REV
I am guessing either the 6P1R or the 1P2R... thoughts?Last edited by 4Speed; 07-25-2016 at 07:38 PM.
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07-25-2016, 08:25 PM #2
i installed a "Motominder" on my 260 at the last rebuild,dirt bike digital clock. wrapped the signal wire on #4 spark plug wire, double face taped it to the port side of the block, been there for 5 years. works great to log running hours, it was $35. bad thing is that i seem to put only 10 hours per year as it turned 50 total hours on the last outing !
LTB OLDGUY
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07-25-2016, 09:05 PM #35000 RPM
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the plug wire that your monitering only sparks 1 time per rev. your not counting all plug wires just that one. #1 is the choise -th
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TuffyD thanked for this postDavid - WI liked this post
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07-26-2016, 05:24 AM #45000 RPM
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Are you saying, where its a 2 stroke it would be 1P1R?
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07-26-2016, 06:26 AM #5
can read from any cylinder,my setup just monitors running time only, not a tach.
LTB OLDGUY
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07-26-2016, 10:15 AM #65000 RPM
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If you get it to work - let me know how- I got one in a drawer I never did get to work-
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07-26-2016, 10:35 AM #7
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07-26-2016, 10:39 AM #8
Yes 1P1R, but i had one like that and had problems also, bought the tiny tach for 2 stroke only and works fine.
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07-26-2016, 05:08 PM #95000 RPM
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I purchased it for the hour meter but figured I might just as well see if rpm recall will work... it was set on 6P1R and the highest RPM after checking it was 1800... No way on a STV at 90+ MPH so I figured something was set incorrectly.
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