Sorry for my ignorance, but do bike engines have alternators, as I can't remember seeing one on a bike. If not then how do they generate
electricity.
Mike
its all built in
They generally have them - but are not so obviously bolted on like car ones. they can be built onto the end of the crank or sit on top of the gearbox
area.
I'm not a bike engine expert though
The R1 has a built in alternator. It puts out 3 phase AC which is fed into a separate rectifier / regulator with gives you your nice DC voltage.
quote:
Originally posted by quadra
Sorry for my ignorance, but do bike engines have alternators, as I can't remember seeing one on a bike. If not then how do they generate electricity.
Mike
Oh i know them well! I had to get my old KR-1S 250 2-stroke stator re-wound on quite a few occasions!
Car alternators have their magnetic field controlled by a wee circuit & fed via sliprings to the rotor so the 3 phase output is just rectified
& fed out to the battery. bike alternators use a permanent magnet to generate the magnetic field (this spins on the rotor - note this means the 3
phase voltage supplied by the generator is proportional to the engine revs) so it's mechanically simpler but the voltage control now has to be
done by the rectifier/regulator. The controller is thus controlling ALL the power output from the generator (which is why car alternators don't
do it this way) .
here endeth the first lesson. . . .
Bob
i want the second lessons and alos the finals...
Can you??/
Tks
Hi tks - the last line was a joke - it's what anglican clergymen always said after the first bible reading in a church service. If you've
got any questions whack 'em on here & we'll all have a go at answering them!
cheers
Bob
Thanks for that, I am now fully educated in bike power generation.
Cheers Mike