Review on π€ Waterproof SAMDO 85mm Marine Tachometer Car Truck Boat Gauge with Hour Meter β 8000 RPM, 12V 24V by Ryan Schweigert
Tap SLOW! I could blow up the engine 4 seconds before the needle jams! Really 4 seconds!
I installed this and found I could rev the engine and the needle was very sluggish. So I took it off and put it on a bench and used arbitrary waveform generation to drive it and simulated a spinning motor; Imagine my surprise that at a full scale deviation from 0 to 8000 rpm the needle responded to the change in 4 seconds! 4 seconds! My conclusion is that this is for a very sluggish engine where the tachometer doesn't matter. Do not buy for heavy duty applications.
- Electrical
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