watermark
New member
I hope some one can help my slightly fuddled brain.
The Tachometer in the standard volvo instrument panel is massively under reading on my MD2030 after several years good service.
It still "kicks" on power up, does show revs as the rpm builds, but is showing a max of about 1,200 rpm at cruising speed (realistically 2,500 ish) The batteries are still charging apparently properly and I am getting 14.0 volts according to the sailing instruments (B&G Wind).
The sensor cable on the back of the alternator was badly corroded and I have attached a new piece of cable to replace the last 2 inches or so of this which did improve things. From 800 rpm to 1,200 rpm max.
Any thoughts gratefully received!
Also....how does a tachometer workl and what is it actually measuring?
Thanks
The Tachometer in the standard volvo instrument panel is massively under reading on my MD2030 after several years good service.
It still "kicks" on power up, does show revs as the rpm builds, but is showing a max of about 1,200 rpm at cruising speed (realistically 2,500 ish) The batteries are still charging apparently properly and I am getting 14.0 volts according to the sailing instruments (B&G Wind).
The sensor cable on the back of the alternator was badly corroded and I have attached a new piece of cable to replace the last 2 inches or so of this which did improve things. From 800 rpm to 1,200 rpm max.
Any thoughts gratefully received!
Also....how does a tachometer workl and what is it actually measuring?
Thanks