SH847 Series R/R Questions - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 3 (permalink) Old 03-03-2019, 09:49 AM Thread Starter
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SH847 Series R/R Questions

Ive read a lot about the MOSFET R/R out there, and how its better than stock. Ive read that the Series R/R is even better. Since I dont want to have to take the stator out, I got the SH847 Series R/R hoping to prevent a stator burnout. Ive read all the tests out there for the stator and what to expect out of the R/R at the battery.

My question is whether or not those numbers apply to a series R/R as well. I read that the series R/R is supposed to kick charging voltage on and off rather than just ground out what isn't needed, so I have to wonder if getting 12.5 VDC at idle and close to 12.8 at about 3k RPMs is good or bad. The manual says R/R output should be nearly battery voltage at low RPM and should rise with the RPMS. Then it says the reading should be 14-15 VDC. Of course, all of the manual talk is for the stock R/R, so Im curious if anyone else has experience with the SH847 specifically.

Thoughts?

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post #2 of 3 (permalink) Old 03-03-2019, 11:45 AM
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Stock R/R should output 14.5v at cruising RPM's, may fall as low as ~12.5v at idle.

Series/MOSFET upgrades should produce similar results. Sometimes people get 14v at idle, sometimes ~12.5

Anything below 12.7v is discharging the battery. 13.5v+ is considered good charging.

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post #3 of 3 (permalink) Old 03-05-2019, 08:33 AM Thread Starter
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Quote:
Originally Posted by ubertalldude View Post
Stock R/R should output 14.5v at cruising RPM's, may fall as low as ~12.5v at idle.

Series/MOSFET upgrades should produce similar results. Sometimes people get 14v at idle, sometimes ~12.5

Anything below 12.7v is discharging the battery. 13.5v+ is considered good charging.

Thanx brah. I fiddled with the connections and ended up with a solid 14VDC that didn't fluctuate a whole bunch with RPMs. I don't know what i did the first time to get shoddy readings, but I'm much happier with a consistent 14VDC.

1995 VN750
Ear Shave Mod
2-Wire Mod
Blue Wire Mod
RLU Bypass
SH847 R/R
Degoat
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