acam37
Well Known Member
I have an issue with my mechanical tachometer. At full power (constant speed) it will only spool up to 2400, then after about a minute the needle will jump to 2600rpm with no noticeable pitch change from the prop. We verified the prop is turning 2670rpm static with a hand held rpm meter. So my question is, can the cable be the culprit or is the tachometer going bad?