Surplus power?

[inanecathode]

Does anyone have the numbers relating to the charging system output and reserve power?
I cant remember how many watts are leftover after the bike is run...

[Walt_M.]

I haven't actually measured it but it is on the order of 80 to 100, depending largely on the headlight. 65W on high beam is standard, I have a 75 in mine.

[h2olawyer]

The charging system starts with 280 watts available.  Many of the aftermarket stators claim to have higher output, but I haven't seen any specs on how much more they make.

H₂O

[inanecathode]

So how many watts are used running the bike?
Headlight, taillight, coils, and tci?

[Lucky]

The formula for finding wattage is very simple:

Watts = Volts x Amps

you need to connect an ammeter on the bike, you probably already know the voltage, many of us have voltmeters on the bike.

note the max readings & that should give you a near peak reading.  you'll probably see it either cranking or WOT....

[inanecathode]

That'll give regulated power, ie whatever the bike wants.
You mean connect to the stator output?

[Lucky]

if you measure amperage at the stator, & use that in the formula, that'll give you it's nominal output.

then measure it at the battery & that will give you your actual usage