Re: [ST] Bring on the cold!!!...this enough?

["Anderson, Neil G (CPR)" <andersng@xxxxxx>]

Bryce wrote:

> 28.6v/6000RPM = x/4000RPM, x=19.04v @ 4,000 RPM

As Enrico says, I think you'll find the alternator output voltage is more
constant across the rev range, only at idle will it drop significantly below
around 14 volts

>- - 60 watt headlight (on high)
>- - 42 watts tailights (21 each)
>- - 24 watts heated grip kit on high
>- - 50 watts homemade heated vest (buid to meet heat
>needs, may draw less)

You need to allow current for the ECU/ignition, instruments etc

> Is 24.2 watts left to charge the battery correct?

That isn't much of a safety margin to keep the battery charged

Neil (not a geek thanks, but I used to be an electrical engineer!)

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