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04-29-2017, 07:51 PM
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#1 |
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Member
Join Date: May 2010
Posts: 42
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Duel pulley generator
I have two one has 4 inch dia. Other one 4 3/4 dia.
Why the difference.IMG_0213.jpg |
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04-29-2017, 08:54 PM
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#2 |
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Senior Member
Join Date: May 2010
Location: Connecticut
Posts: 860
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Re: Duel pulley generator
Well the 4" will spin faster and give you more juice at lower RPM! I have a 4" installed on my application.
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04-29-2017, 10:46 PM
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#3 |
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Senior Member
Join Date: May 2010
Location: Melbourne Australia.
Posts: 2,218
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Re: Duel pulley generator
For applications where engines ran under different conditions and RPM requirements. Such as , cars, trucks, military vehicles, generating sets, welders, etc etc. Regards, Kevin.
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04-30-2017, 09:35 PM
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#4 |
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Senior Member
Join Date: May 2010
Location: near Washington, DC
Posts: 612
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Re: Duel pulley generator
The 4 inch originally was used on 35 - 36 trucks. The 4 3/4" was standard production on 37 - 39 trucks. There were two versions of the 37 - 39, one for 2-brush and one for 3-brush generators. Any part numbers on the pulleys?
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Those who do not move do not die, but are they not already dead? |
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05-01-2017, 10:30 AM
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#5 |
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Senior Member
Join Date: Jun 2010
Location: San Antonio, Texas
Posts: 18,006
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Re: Duel pulley generator
There is also a difference in the mounts. The green bible has illustrations of the generator front mounts with part numbers and a fair amount of pulley information too. Pulleys were fan related clear up through the 1939 standard cars when the crankshaft mounted fans replaced them for 85 & 95 HP V8 engines.
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05-01-2017, 06:31 PM
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#6 |
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Member
Join Date: May 2010
Posts: 42
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Re: Duel pulley generator
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4 3/4. 79-10130- BB or 88 |
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05-01-2017, 07:40 PM
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#7 |
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Senior Member
Join Date: May 2010
Location: near Washington, DC
Posts: 612
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Re: Duel pulley generator
4tmike,
Those part numbers verify the info in my previous post. A 79-10130-B is for a 3-brush generator. The "BB" suffix is a bit strange.
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Those who do not move do not die, but are they not already dead? |
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05-01-2017, 07:57 PM
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#8 |
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Member
Join Date: May 2010
Posts: 42
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Re: Duel pulley generator
The last b part is not very clear.It could very well be a single B , but it looks like there is another character.I do not have a parts book to go by.
I appreciate all the help and info. |
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05-01-2017, 10:35 PM
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#9 |
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Senior Member
Join Date: Oct 2011
Location: Gloucester VA
Posts: 1,042
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Re: Duel pulley generator
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