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Need help on 1974 Honda CB 550

This is a discussion on Need help on 1974 Honda CB 550 within the Technical FAQ's forums, part of the Caferacer FAQ's category; Break even charging on a SOHC cb Honda (750, 550, 400, 350f) doesn't occur till between 2000 and 2200 rpm. If you are testing "charging" ...

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  1. #11
    Senior Member Geeto67's Avatar
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    Break even charging on a SOHC cb Honda (750, 550, 400, 350f) doesn't occur till between 2000 and 2200 rpm. If you are testing "charging" at idle you are wasting everyone's time including your own. You take a reading on your volt meter at the battery at 21-2300 rpm and then again at redline. That will tell you whether it's charging. By the way these charging systems suck eggs, if you see 13.7 volts at redline you are doing great, so don't expect 14v
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.

  2. #12
    Senior Member Geeto67's Avatar
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    By the way the "old pro" way to check charging on these bikes is to put your hand in front of the headlight while the bike is running. Rev it to redline and if the headlight gets brighter and stuff isn't smoking or popping fuses you are good to go.
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.

  3. #13
    Senior Member Geeto67's Avatar
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    so did you test it again and is it charging?

    Also, can someone move this out of the FAQs and into the normal tech section? Thanks.
    Ever tried. Ever failed. No matter. Try Again. Fail again. Fail better.

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