Thursday, 19 September 2019

SOHC CB750 Charging help


Hello all,Trying to resolve a charging issue I’m facing on my ‘76 CB750F. I feel like I’m chasing my tail at this point, and electrical stuff is not exactly my expertise.Preface: bike has a good stator, new regulator/rectifier, and I’ve checked all the wiring/connections between the stator and reg/rect.The battery is reading 12.7V when charged and the bike is off. Reading 12.2V at idle and 12.6V at 3500RPM. Voltage drops to 10.9V when cranking for ~5s with the kill switch off. The battery is also approx 4-5yrs old.As far as I can tell the wiring is good, the battery’s ground connection is good. Is it possible for a bad battery to show good voltage when sitting but not reach 13+V with a good charging system? The majority of the charging system is essentially either new or been checked.Any advice before I go and drop $60 on a new battery? Is it worth trying? I feel like I’m running in circles at this point with this job. via /r/CafeRacers https://www.reddit.com/r/CafeRacers/comments/d6mhao/sohc_cb750_charging_help/?utm_source=ifttt

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