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Old 26th November 2021, 12:31   #21
polinsteve
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I can try that. What fuse to remove, fuel pump?
15 seconds continuous cranking seems a long time, I just timed it my goodness that is a lot of cranking

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Back in the day, (late 1960s buses) our Leyland Leopards would take several minutes continuous cranking in cold weather, followed by a clouds of acrid smoke.
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Old 26th November 2021, 22:22   #22
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Back in the day, (late 1960s buses) our Leyland Leopards would take several minutes continuous cranking in cold weather, followed by a clouds of acrid smoke.
I guess you could call that proof of rubbish design.---

Fast tick over to put a charge into a nearly flat battery is no better than just letting the engine tick over.--The modern alternators will hold 14.4 volts even at tick over.---
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Old 27th November 2021, 01:31   #23
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I guess you could call that proof of rubbish design.---

Fast tick over to put a charge into a nearly flat battery is no better than just letting the engine tick over.--The modern alternators will hold 14.4 volts even at tick over.---



Rubbish design from the 1960's compared to what exactly ?



Fast tickover compared to idle tickover to put a charge into a nearly flat battery is the same you say.


Can I suggest you experiment on your suggestions with a modern alternator with both a voltmeter and an ammeter connected.


Then come back to report that the amps produced is exactly the same at both idle and a high idle.


Volts is only half of the story
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Old 27th November 2021, 09:38   #24
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I guess you could call that proof of rubbish design.---

Fast tick over to put a charge into a nearly flat battery is no better than just letting the engine tick over.--The modern alternators will hold 14.4 volts even at tick over.---

Up to the late 1970's most vehicles did not charge the battery well at idle. Motorcycles did not at all. When Honda launched the CX500 V-twin in 1978, they made a huge thing of the fact that its alternator charged the battery even at idle.
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Old 27th November 2021, 11:28   #25
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Up to the late 1970's most vehicles did not charge the battery well at idle. Motorcycles did not at all. When Honda launched the CX500 V-twin in 1978, they made a huge thing of the fact that its alternator charged the battery even at idle.
I changed the dynamo on my 1970's Fiat 500 for an alternator with dramatic improvement.--It made a real improvement of the headlights from 10 glow worms to 100 glow worms.---The light actually managed to reach the road surface---
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Old 27th November 2021, 11:33   #26
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Worth looking at.--------Live and learn is my motto.-----





Attached Files
File Type: pdf Alternators (1).pdf (1.08 MB, 27 views)
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Old 29th November 2021, 23:48   #27
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I guess the above pdf was too complicated for most folk.---
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Old 30th November 2021, 18:11   #28
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I guess the above pdf was too complicated for most folk.---
I dont do well reading a lot of material like that. I'm not good at technical reading, I just cant take all the information in.

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Old 30th November 2021, 20:47   #29
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I guess the above pdf was too complicated for most folk.---

A bit technical in parts but otherwise not bad.


Remember when you said......... " Fast tick over to put a charge into a nearly flat battery is no better than just letting the engine tick over.--The modern alternators will hold 14.4 volts even at tick over.-- "


And I said .........."Fast tickover compared to idle tickover to put a charge into a nearly flat battery is the same you say.

Can I suggest you experiment on your suggestions with a modern alternator with both a voltmeter and an ammeter connected.

Then come back to report that the amps produced is exactly the same at both idle and a high idle. "



Could I suggest you read the PDF, taking note of Fig. 3 and Fig. 7 where you will find that there is a noticeable increase in current output at higher idle ( fast ) speeds






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Old 30th November 2021, 21:52   #30
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Worth looking at.--------Live and learn is my motto.-----


Did you hope to initiate a discussion on the basis of the paper? If so, to what end?
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