SeattleRod
CB750 Enthusiast
Hi guys and girls,
I was left stranded the other day when I was out riding my 1980 cb750c.
The battery went dead and I had to jump it 3 times to make it home.
I knew the rotor was on its way out measuring only 3.5ohms, so I went ahead and got me a new one. This one reads 4.5ohms.
Brushes have plenty of life left, so I checked the charging system with the bike running. At idle, the battery volts read 12.8 and at 3000+rpm the volts are 12.9.
Checkin the voltage reg/rectifier per the manual, the ohms read 430,400,430 on the yellow leads against the green lead and the same reads in reverse. I also get the same read between the yellows and the red/white lead.
Per the manual, the proper readings are either high (2000 ohms) or low (5-40 ohms).
Is my r/r busted already? I bought this one not that long ago, although it's Chinese.
Thanks.
I was left stranded the other day when I was out riding my 1980 cb750c.
The battery went dead and I had to jump it 3 times to make it home.
I knew the rotor was on its way out measuring only 3.5ohms, so I went ahead and got me a new one. This one reads 4.5ohms.
Brushes have plenty of life left, so I checked the charging system with the bike running. At idle, the battery volts read 12.8 and at 3000+rpm the volts are 12.9.
Checkin the voltage reg/rectifier per the manual, the ohms read 430,400,430 on the yellow leads against the green lead and the same reads in reverse. I also get the same read between the yellows and the red/white lead.
Per the manual, the proper readings are either high (2000 ohms) or low (5-40 ohms).
Is my r/r busted already? I bought this one not that long ago, although it's Chinese.
Thanks.