maok

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About maok

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    - Down Under the car .

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  1. maok

    Third brush generator regulator

    Thanks. That maybe a good option.
  2. Bloo, was your meter set to record maximum current draw? If so, I suspect that maximum would be at the start when the starter is being accelerated then the current would drop to a settled level. I guess when starting an engine the starter would only be operating at maximum current draw any way.
  3. Thanks for doing the test Bloo, I don't have a 6 volt battery. I think your results to some degree confirms your statement above. I obviously did not correlate the higher speed to the high power transfer. I guess we are trying to determine if the starter is being damaged Now the questions are; 1. Where does that extra power (wattage) go, spinning the starter and hence engine to a higher speed, or heat, or a combination of both? 2. And does it do damage to the starter?
  4. Same as my '28. But the Firestones on my '28 don't have enough grip to drive sideways on walls....😁
  5. An interesting experiment would be to place a DC clamp meter (on the amps setting) around the starter motor wire with 12 volts and 6 volts batteries.
  6. And yet you need bigger cables with a 6 volt battery. How could this be Bloo? Your use of Ohms laws is fine when the motor is not moving but when the motor moves it becomes a dynamic electrical circuit with back EMF affecting the circuit. So its complicated. Someone with a higher pay rate can explain it better than I can. I used the power equation in my earlier post because its simple. The engine requires the same amount of power (actually its probably slightly more with the 12 volts because of the faster spin speed causing some more friction) to turn it over regardless of the battery voltage. Regarding the heat generated, you have to take into account 'TIME', a starter motor only spins for a few seconds at the most, hence the reason why they don't have a cooling fan built-in, unlike an alternator/generators. With a reasonably tuned engine, starter motor does not get hot enough because it is only spinning for 2-3 seconds at a time. If you have a badly tuned engine then yes, heat will cause issues inside the starter motor, but this is regardless of the voltage, specially if the starter gets stuck in the flywheel gears.
  7. Its unlikely it was because a 12 volt battery was used a couple of times. I have been running my '28 Chrysler with a 12 volt battery for nearly 3 years (it was running with a 12 volt battery before I got it as well) and I start the engine more than most. Its the current (amps) that produces the heat in combination with resistance and time, not the higher voltage. Remember, there is less amps going through your starter when powered by a 12 volt battery than a 6 volt battery. The total 'power' (Power = Volts x AMPs ) used is approximately the same regardless if its powered by 6 volts or 12 volts.
  8. The below is from this site - https://electronics.stackexchange.com/questions/39387/how-are-current-and-voltage-related-to-torque-and-speed-of-a-brushless-motor In any motor, the basic principle is very simple: rotational speed is proportional to voltage applied torque is proportional to current pulled A 100 volt motor is a motor that can take a maximum of 100 volts, and a 50 volt motor a maximum of 50 volts. Since the 100 volt motor can take more volts, if all else is equal, it can give you a higher maximum speed. But the difference in voltage does not affect the torque. To get more torque to go up a hill, you need to supply your motor with more current. A motor that can take more current (and a battery and motor controller that can supply more current) will give you more torque to help you up the hill.
  9. The turning speed is based on the Voltage the starter motor is feed, hence the reason why a 12 volt battery will turn over a starter faster than a 6 volt battery. Note, the battery needs to be able to supply enough amps (ie CCA of the battery) to handle the resistance of the of the engine. If your car does take time to fire, thicker cables are important, especially for a 6 volts system.
  10. maok

    Third brush generator regulator

    Does James do a 12volt version of his regulator?
  11. maok

    Third brush generator regulator

    Also, I hooked up a volt meter in my car and the voltage at +20mph reads well over 16 volts, not sure how high it is actually reaching. Not great for your battery life.
  12. Hi all, has anyone order one of James Peterson's voltage regulators for 3rd brush generators recently? I have sent him an email about 2 weeks ago but have had no response so far.
  13. maok

    Electric fuel pumpon 31-57???

    If you wish to just prime the carb before starting then you won't need to worry about the pressure. Just trigger it with a momentary push button switch. Also have an inline fuse, 5 amp should be okay.
  14. maok

    1928 Chrysler 52

    I follow the real Aussie footy - AFL.
  15. maok

    1928 Chrysler 52

    Oops, sorry mate. I uploaded the wrong page.😕