Richard Bell wrote:
> In article > ,
> Bruce Chang > wrote:
> >
> >"sdlomi2" > wrote in message
> ...
> >> Help! Got a '55 Studebaker. Aftermkt. mp3/cd/amfm radio. If
I set
> >> stations, it remembers fine going from on to off to access to off.
But!
> >> When I start i, the starter seems to drop the "voltage
threshold"(at least
> >> that's what I visualize) such that all memory settings are lost.
> >> Ideas, please? Thank you, s
> >>
> >>
> >>
> >
> >Maybe a small 12V battery or large capacitor that's hooked up with a
diode
> >between it and the car battery so voltage to the stereo won't drop
when the
> >car battery voltage drops significantly.
> >
>
> You need two diodes. One diode prevents the car from trying to
charge the
> small batteries, and the second to keep the small batteries from
trying to
> help crank the starter. The large capacitor will cause a voltage
> spike, just after the motor starts, so a choke coil will be needed to
> protect the sound unit.
>
> Here, in the Great White North (How's it goin', eh?), we would advise
you that
> your battery is seriously short of cold cranking amperage and that
you
> should buy the biggest battery that will fit in the tray. However,
being
> designed for old-tech batteries, you should accept anything that
covers half
> of your '55 studebaker's battery tray. While cold weather starting
may be
> the least of your worries, a larger battery is the simplest (if not
the
> cheapest) solution to your problem.

Replacing the battery tray with one from a 56-64 Stude (assuming it's a
C-K body, I'm not sure about sedans) will allow a larger battery to
fit.

nate