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Bill Dube wrote:
No need to alter the coils. (This is a lot of work.) If the rotor will stand 6000 RPM, then the alternator will work just fine. The standard voltage regulator that comes with it might not like the extra input voltage, however. It is no big deal to (for me) to build a voltage regulator to take higher input voltage, if this turns out to be a problem.
Would it be that difficult for an alternator shop, once you know how turns on each coil? My thought is that at double the RPM you'll get twice the voltage, or you can cut the turns in half and get the same voltage. Cutting the turns in half will allow use of a heavier guage wire, making it more robust.
OR leave the coils as is, but split them into two groups, wire the groups in parallel and get twice the current. Or at least a redundant set of coils, case one set should burn out.
As for the rotor handling 6000RPM. The rev limiter on these bikes can be set up to 8000. They are fairly heavy gauge steel housings. I would personally worry more about the mounting not being centered and balanced that I would the rotor coming apart.
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