Guys (this mode of address includes gals too, so just leave it there!), we're all aware that the 247 & 305 alternator (dynamo) is kind of weedy, so I'm working on a simple, low-cost route to improve the charging rate. I'll keep you all posted here, so watch this space over the ensuing days/weeks. It's bloody hot here in Spain right now (40ºC - sorry, we're metric!) and getting more & more humid by the day, so I'm stayin indoors in the aircon as much as possible. I'll work on it as & when I'm not melting!
Keep revving!
Regards,
Steve Edwards
PS: I'm a Brit, so please help me out when we don't use the same words, thanks.
honda305.com Forum
Vintage Honda Owners, Restorers, Riders and Admirers
Improving charging rate
-
e3steve
- h305 Moderator
- Posts: 2601
- Joined: Fri Oct 31, 2003 1:38 pm
- Location: Mallorca, Spain & Warsash, UK
Improving charging rate, cont'd...
If anyone can help with some alternator stator coil readings, please read the following request. This could benefit all owners (then again, it could just be a damp squib!). Any help will go a long way and would be much appreciated.
Regards,
Steve Edwards
Need help please....in order to help others. Anyone out there with a multi-meter and proficient in its use? I need to know the readings of the alternator coils on a C or CA series engine, along with another CB, CP or CYP other than a ’64. If someone could help and I can improve the charge rate. I’ll post the results soon. This is a simple measurement and doesn’t need to be super-accurate, but just a rounded-up reading to the nearest ohm or 2; please disconnect the battery neg cable, preferably from the chassis bolt, first:
Method C / CA
i) Disconnect the YELLOW & BROWN wires at the rectifier and measure the impedance, with the meter on the OHMS (Ω / resistance) scale, across these two wires; please note the reading.
ii) With the ignition OFF measure the impedance, at either the ign switch or its associated coupler block, across the PINK & YELLOW wires (terminals DY & SE in the switch itself); again, please note the reading as above.
Method CB / CP / CYP
iii) as method C / CA, but with reading ii taken at the lighting switch in the headlamp shell; wire colours should be the same, as should the terminals’ markings.
Once I have all the readings for each model I can continue the research to improve these models’ battery charging rates. I could post my idea now, but it would be inaccurate and experimental, and therefore probably unsafe.
Please email to me (e3steve@msn.com) or post results.
Many thanks.
Regards,
Steve Edwards
Need help please....in order to help others. Anyone out there with a multi-meter and proficient in its use? I need to know the readings of the alternator coils on a C or CA series engine, along with another CB, CP or CYP other than a ’64. If someone could help and I can improve the charge rate. I’ll post the results soon. This is a simple measurement and doesn’t need to be super-accurate, but just a rounded-up reading to the nearest ohm or 2; please disconnect the battery neg cable, preferably from the chassis bolt, first:
Method C / CA
i) Disconnect the YELLOW & BROWN wires at the rectifier and measure the impedance, with the meter on the OHMS (Ω / resistance) scale, across these two wires; please note the reading.
ii) With the ignition OFF measure the impedance, at either the ign switch or its associated coupler block, across the PINK & YELLOW wires (terminals DY & SE in the switch itself); again, please note the reading as above.
Method CB / CP / CYP
iii) as method C / CA, but with reading ii taken at the lighting switch in the headlamp shell; wire colours should be the same, as should the terminals’ markings.
Once I have all the readings for each model I can continue the research to improve these models’ battery charging rates. I could post my idea now, but it would be inaccurate and experimental, and therefore probably unsafe.
Please email to me (e3steve@msn.com) or post results.
Many thanks.