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83GS1100G

83GS1100G

Forum Lurker 73 From Paris, TX
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  • 83GS1100G
    Starting a long delayed rebuild of my Dad's 1983 GS1100G. Looks a little sad right now all torn down.

    Learned a lot on the GSR site but have a question on upgrading the OEM regulator/rectifier.

    Electrosport says their ESR130 (for this bike) deals with all 3 phases and shouldn't put destructive heat back into the stator (per the Stator Papers on this site).

    Other reading implies that a MOSFET based R/R handles charging with less heat due to better switching efficiency. The Shindengen SH-775 and the Compufire R/R CF55402 are referenced on GSR.

    Searching also turned up the Carmo CARR131W that states it has MOSFET.
    https://www.carmo-electronics.com/webshop/voltage-regulator-rectifier/carr131-rs21-mosfet
    It also has the same 5 spades out the bottom of the R/R like the one on my bike so it would appear to be easiest to adapt.

    So my question is whether MOSFET reduces heat in just the R/R or does it help keep the stator cool also. Or does it do both by handling all 3 phases from the generator?

    If anyone has any experience or wisdom on the Carmo R/R or the best choice out of all these - Thanks for any feedback. If the only thing trustworthy is around $300, then so be it.
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