• Enter the April CB750 Supply gift certificate giveaway! It's easy... Click here, post something, and you're entered into the drawing!

Recent content by PortlandThomas

  1. P

    Wires get super hot and smoking

    Hi there, I started with a battery charging problem that I still try to solve. I got a new wiring harness, new battery, new regulator/recitifer. I check my starter coil and the resistance showing are great. My problem here is that when I plug the new harness to the new rectifier, the plug...
  2. P

    Alternator throwing 0 volts on 1978 CB750K

    gad damn it!!! I don't like this answer :) any clue? Maybe the connection between the field coil and the rotor? I don't really know where those are in contact.
  3. P

    Alternator throwing 0 volts on 1978 CB750K

    Hi there, I have an alternator issue. I first started to work on it because my battery wasn't keeping the charge. So I got a brand new battery, brand new regulator/rectifier (wanted to get those small lithium battery anyway). But I realize that I have no Volts coming out of my Alternator (3...
  4. P

    1978 CB750 Alternator Resistance

    I got a new battery, a new regulator/rectifier and I tested the alternator output (3 yellow wires) again and again and it shows no voltage at all. Do you know how i could check if the alternator is still grounded correctly? I'm really surprised that it shows 0 and not even a small random...
  5. P

    Regulator? Rectifier?

    tks dude, I asked these guys at Dime and they directed me on the rickmotorsport page. awesome
  6. P

    Regulator? Rectifier?

    Hi there, I wanna change my batterie for a smaller lithium one (http://www.dimecitycycles.com/9-7-amp-hour-240-cca-antigravity-8-cell-battery.html). I also need to change my regulator/rectifier...
  7. P

    1978 CB750 Alternator Resistance

    Never mind, I've done the test again and it shows 0 or 0.2. I'm guessing that it might be my rectifier/regulator. I think the regulator doesn't send juice to the alternator. Then the alternator can't send juice back to the rectifier. See this photo to know what my regulator/rectifier looks like...
  8. P

    1978 CB750 Alternator Resistance

    I have a SOHC so it should be alright. At least for that point. Now I've checked the output from the 3 starter coil wires while my engine was running. Like this video is telling me to do: https://youtu.be/44hLjPBObYw?t=12m10s And it shows around 20 to 25 volts on every of the 3 wires...
  9. P

    1978 CB750 Alternator Resistance

    Alright, tks a lot. Great help. Other (probably dumb) question: Is that normal that neither my rotor nor the coils (field and stator) of my alternator are magnetic. The coils are not plugged FYI. Even when I plug it (but don't run the bike obviously because my alternator and gear box are open)...
  10. P

    1978 CB750 Alternator Resistance

    Tks for your answer. My battery shows 12.6 when it just being charged and now it's been sitting on my bike for two weeks and it still shows 12.3 Do you think that the battery is good. Or not necessarily ?
  11. P

    1978 CB750 Alternator Resistance

    Hi there, First, I'm new here, first post. So my apologies if I don't do it properly. I have a battery issue and I'm trying to troubleshoot it. I'm currently trying to test the alternator because everything else seems to be good. On my shop book, it says that "the rated resistance value...
Back
Top