MikeDunlop
Joined: 02 Jan 2012
Posts: 15
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 Posted: Fri Jul 04, 2014 7:45 am Post subject: Alternator Conversion to External Regulator. |
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I'm in the process of following Bob's advice and am about to convert a Nippondenso alternator to external regulator. After a lot of searching and research I've come across the following two methods.
I need some advice and input before I start (measure twice, cut once!)
1. http://www.aeroelectric.com/articles/Alternators/One-Wire_Alternator_Conversion.pdf
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2. http://homepages.paradise.net.nz/georger/Alternator.htm
In this article it states:
Before we start we need to know one piece of important information about your charging circuit.
There are two main types of alternators and we need to know which type you need. The types are known as Type A and Type B. The difference being where the regulator fits in relation to the alternator.
In type A circuits the layout is in the order of:
BUS(+ve) - then - Alternator field - then - Regulator - then - Earth.
Therefore the regulator controls the earth feed to the Alternator field.
In type B circuits the layout is in the order of:
BUS(+ve) - then - Regulator - then - Alternator field - then - Earth.
Therefore the regulator controls the voltage feed to the Alternator field
Basically it is a matter of polarity. Simple but VITALLY important. So before reading the rest.. Find out what you need !!
I think Z-13/8 is a type B circuit... Please correct me if I'm wrong.
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My understanding of both articles:
1. http://www.aeroelectric.com/articles/Alternators/One-Wire_Alternator_Conversion.pdf
a) Modification of the main alternator housing i.e remove copper attachment and the plastic nut retaining pocket. Then drill/tap the casing for the new attachment.
b) Modify the regulator.
2. http://homepages.paradise.net.nz/georger/Alternator.htm.
a) Modify the regulator.
b) Then the brushes need a small modification.
My assumptions are:
In the event of having to replace an alternator sometime in the future it would be easier with number 2. (Alternator.htm) because you could use the existing modified regulator housing and just carry out the small modification on the brushes.
I think Z-13/8 is a type B circuit... Please correct me if I'm wrong.
Any thoughts or experiences on the above?
Regards
MikeD (UK)
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