With one of these...$25...
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| Laser/digital rpm meter |
Tuesday, 13 November 2012
Cool things ~ RPM Meter
I admit my shortcomings...and one of them is my inability to abide inaccuracy. I suspect the Westerbeke 35D3 tachometer is not being honest with me...and I also suspect the zero-throttle rpms are a hair too low. Given that the factory tachometer is but a signal from the alternator, converted to a mechanical needle, how does one accurately-determine rpm?
With one of these...$25...
The unit comes with sticky reflective strips that you stick on the crankshaft pulley, aim and press the green button...easy...at least I hope...it hasn't yet arrived.
With one of these...$25...
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I can report that the digital tachometer works extremely-well, and has allowed me to calibrate the Westerbeke tachometer and the idle speed at the engine itself.
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