Charging Question (NOT Vmax Related)

[95spfldmax]

So my buddy is mostly finished building this Kawasuki, a '74 750cc Kawasaki triple 2-stroke motor in a '94 Suzuki GXR750 frame. Looks (& sounds!!) pretty sharp as you can see. Still working out some jetting issues but this question is about the charging system problem he is having.
The bike is over charging. 13-14.5v at idle but 16+ reving it up. He has a brand new battery and has swapped out the '74 regulator for a new after market one (same results).
This bike has a seperate rectifier that seems to be working ok.

Does anyone have any ideas on what to check next?

 

[VMAX1260]

14.5 at idle i think is way to much. maybe the after market regulator doesnt do it job well. i cant think anything else

 

[Miles Long]

Maybe the multimeter? Try using a known accurate one, to verify the voltage.
Other than that, is the regulator grounded to a clean surface? Perhaps even try a separate ground wire, directly to the battery negative post.
One more thought - I remember my '72 650 Yam. had an adjustable regulator.
Would this be the case with the Kaw. unit?
Cheers!

I like the bike! Very unique!

 

[Bill Seward]

Could this bike be converted to a mosfet R/R unit? If it's 3-phase AC, you'd think it would be feasable....

 

[Tex85]

All the above suggestions should steer him down the right path. I just wanted to commend his work on the restoration. Always fun to have a bike that makes people go "that looks great, what is it?"

 

[95spfldmax]

Maybe the multimeter? Try using a known accurate one, to verify the voltage.
Other than that, is the regulator grounded to a clean surface? Perhaps even try a separate ground wire, directly to the battery negative post.
One more thought - I remember my '72 650 Yam. had an adjustable regulator.
Would this be the case with the Kaw. unit?
Cheers!

I like the bike! Very unique!

Thanks some suggestions.

The meter is good. It's mine & I use it all the time.
The ground is at the frame on top of another ground lug. But a quick jump to the battery won't hurt to try.
Will check on an adjustment.

 

[dannymax]

I just wanted to commend his work on the restoration. Always fun to have a bike that makes people go "that looks great, what is it?"

+1 Sharp bike, nice job! :clapping:

 

[The Beekeeper]

Big fan of the 2 stroke tripples........Especially the Kawai H2's..........Looks cool!..............Tom.

 

[Miles Long]

Big fan of the 2 stroke triples........Especially the Kawai H2's..........Looks cool!..............Tom.

These triples came on the scene when I was a youngin' - still in school, dreaming of owning a motorcycle, and when a big bike was a 650 British twin.
I can still remember the noise when one was approaching, the streetdrags, and the many accidents and deaths. They were known as "widowmakers"

 

[95spfldmax]

It's funny because it looks like the bikes in between races & levels in my mid-80's video game Road Rash that I play all the time :clapping:

 

[95spfldmax]

+1 Sharp bike, nice job! :clapping:

That's Whitey's bike, Danny............