> Anybody know about how much current it takes to crank a Mazda rotary

on a

 > 70F day?

 I would guess around 3 HP or 2238 watts at 11 volts that would be
 about 200 amps.

Yes, but the in-rush is probably closer to 700 amps.
Jeff Spitzer

Al Gietzen wrote:

Yeah, that's about what I guessed.  Just trying to determine whether it
would drop the voltage from my two batteries enough to cause my GPS to lose
a flight plan if I had the GPS on before starting the engine.  Fortunately
Odessey batteries have very low internal resistance; but I haven't come to a
conclusion yet.

Al

As a guess Al if the GPS uses five volt chips the GPS regulators
could stop regulating at about 8 volts. Some newer regulators will
go lower.

Paul Lamar
 
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