T&T: strange alternator problem

[Albin43SDtr]

'Lo Dick and all,

Tachs that are driven from alternators often have a similar 
"problem".  For example, all four tachs on the Celestial (twin 
engines, upper and lower helms) indicate zero RPMs  and 
voltage/current output when first starting the engines and idling. 
After the oil pressure comes up, I bump the throttles to what is 
about 1200 RPMs and the tachs start reading correctly as does the 
alternator output. After that, they operate perfectly at all power 
settings. It seems to just be the nature of the beasts.


Take care and be safe.

Wayne
M/V Celestial
Albin43 Sundeck