Recommend me a tachometer

[ridgy]

Just got a new alternator with a coveted W terminal so then I thought great, now I can fulfil a lifetime ambition of having a tachometer.

Except I'm struggling to find one, preferable 52mm up to 4000rpm. ASAP only seems to have huge expensive ones, 85mm.

Doesn't have to be alternator driven, something with a magnetic pickup would be fine also.

 

[Refueler]

I have bought the sensor style that straps to outer case of alternator + 52mm display ... work a treat - no need for playing about with W / Aux terminals ...
eBay is full of them .....

Diesel Engine Tacho Adapter RPM Signal Sensor Fit For Vehicle Truck Boat Yacht | eBay

2" 52mm Tachometer 0-4000rpm Tacho RPM Gauge For Marine Boat Car Waterproof | eBay

It proved so good on the Perkins - that I bought another to put on my Yanmar ... AND thinking to get another for my VP AQ170 (higher RPM of course).

 

[rogerthebodger]

4,000 RPM 2 1/16" (52mm) Tachometer, 12V - VDO Instruments

 

[PaulRainbow]

Just got a new alternator with a coveted W terminal so then I thought great, now I can fulfil a lifetime ambition of having a tachometer.

Except I'm struggling to find one, preferable 52mm up to 4000rpm. ASAP only seems to have huge expensive ones, 85mm.

Doesn't have to be alternator driven, something with a magnetic pickup would be fine also.

https://www.amazon.co.uk/ELING-Tach...-Backlight/dp/B0C7BK3LSG?ref_=ast_sto_dp&th=1

Google will come up with dozens of options.