r.navy.mil>
> Bob,
> The problem has been discussed about the 12 AMP battery not being strong
>enough to "start" the 582 (in all cases). From your answer, it sounds like
>you are saying, "The 12 AMP is not sufficient". "The 14 AMP is the next
>size up so, get that one". Correct??????????????
This is a problem with pat answers based on past
experience and/or ol' mechanic's tales. I can
show you a 1.2 a.h. battery that will crank an
engine perfectly well . . . . several times!
Bottom line is that EACH battery needs to be
evaluated on its own merits.
Given the rapid advance of the science in battery
technologies, I'd hesitate to discount ANY
idea until it's tried. A fairly general answer
to using low a.h. batteries to crank engines is
related to terminal sizes . . . many RG batteries
have sufficiently low internal impedance to crank
and engine . . . ya just can't hood a 4 or 6AWG
wire to them.
B&C has an itty bitty 10 a.h. that he cranked
a cold IO-360 through a 5 blade starting sequence
7-8 times in a row before the battery faded. It's
terminals are about equal to a 10-30 screw. With
some care in termination and bolt torque attention,
this guy could work just fine in a 912 powered
airplane.
Bob . . .
http://www.aeroelectric.com
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