my r/r story, and questions about charging... (i did search)

[cdub]

so, as per usual, ridin along my 750 dies, then wont charge batt, etc blablabla we know the story. now, before i went through the stator papers, i fully charged the battery, and when i went to check the connections for the r/r guess what? a whole buncha burnt and melted together wires. (surprise) so, i repaired the wires properly and then went through the stator papers, and i have a few ?'s...

o, i also have an 850 i borrowed the r/r from to do a comparison test, but i havent ridden it in like a year so...

-part (a) was ok, so was part (b) so stator and batt wiring are ok.

-for part (c), the 1st and 3rd tests gave me no reading on both r/r's. the 2nd and 4th tests give me readings of 620ish across the board on both r/r's

- now after repair my batt gives me 12.85v now when sitting there, and below 1k rpm idle. when its above 2k rpm - 5k rpm i get 13.3v - 13.4v with the lights on and everything. above 5k rpm it starts goin down to 13.1 and below.


--does this mean shes all good to go, because its charging now? what should the charge be in those situations?

--not really sure why the 1st and 3rd tests of part (c) gave no readings. according to that the r/r should be dead, but its charging? plus both r/r's tested identical. would they both be dead? or ok?




thanks for reading the long story, all opinions welcome...

[Guest]

Mine goes up to 14.8 at 5,000 rpms. Check the stator.

[gert du prez]

Had the same problem, turned out to be the RR,
now got 13.8V at idle and 14.85V at 3,500 rpm...

I would worry because of the dropping of the voltage at higher rpm's

buy the honda conversion, you'll be happy...

[cdub]

so i should be getting 13.5 at idle and 14.8 above 2k rpm?

[bakalorz]

so, as per usual, ridin along my 750 dies, then wont charge batt, etc blablabla we know the story. now, before i went through the stator papers, i fully charged the battery, and when i went to check the connections for the r/r guess what? a whole buncha burnt and melted together wires. (surprise) so, i repaired the wires properly and then went through the stator papers, and i have a few ?'s...

o, i also have an 850 i borrowed the r/r from to do a comparison test, but i havent ridden it in like a year so...

-part (a) was ok, so was part (b) so stator and batt wiring are ok.

-for part (c), the 1st and 3rd tests gave me no reading on both r/r's. the 2nd and 4th tests give me readings of 620ish across the board on both r/r's

The description in the stator papers sucks ... it should not say "a reading of 1.5 or higher", it should say "open" or "no reading" ... your rectifier passes

- now after repair my batt gives me 12.85v now when sitting there, and below 1k rpm idle. when its above 2k rpm - 5k rpm i get 13.3v - 13.4v with the lights on and everything. above 5k rpm it starts goin down to 13.1 and below.


--does this mean shes all good to go, because its charging now? what should the charge be in those situations?

It's charging, so you're probably good to go ... I would like to see a bit higher voltage though (say 13.8 to 14.6 or so), one possibility that may help is improving your grounding. Run a wire directly from the regulator ground wire to the battery ground.
The voltage dropping again above 5k is normal, and not really a problem (unless you mainly ride full throttle on the wide open highway and keep it well above 5k rpm for long periods of time - \\/ -)