Tachometer Recommendation

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Old 01-13-15, 07:06 AM
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Tachometer Recommendation

Can someone recommend an inexpensive tachometer for quickly and reliably measuring engine RPM on a 4-stroke engine? Is this one any good? http://www.ebay.com/itm/STRANDIX-WIR...item3a6a722136
 
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Old 01-13-15, 07:39 AM
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There is really no information about the tach in the listing. Being wireless I'm curious how it operates. I've got an optical one and one that you wrap a wire around a spark plug wire.
 
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Old 01-13-15, 08:20 AM
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and one that you wrap a wire around a spark plug wire.
Yeah, I found one with an antenna that clamps around the spark plug wire. It is $125 though. I have an old oscilloscope in my basement. Maybe I'll just use that to pick up the signal. I could also probe the output of the CDI box couldn't I?
 
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