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marine alternator + spin direction
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marine alternator + spin direction Cydrome Leader 08-15-2008
Posted by Cydrome Leader on August 15, 2008, 12:42 pm
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 Is there any reason a marine alternator with built in electronic regulator
cannot be run in the opposite direction it's designed for IF proper
cooling is still available?

I can see that spinning it backwards with the existing fan blades won't
cool it, but other than that, I can't see how direction would matter.

Thoughts?

Posted by Ulysses on August 15, 2008, 4:07 pm
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> Is there any reason a marine alternator with built in electronic regulator
> cannot be run in the opposite direction it's designed for IF proper
> cooling is still available?
>
> I can see that spinning it backwards with the existing fan blades won't
> cool it, but other than that, I can't see how direction would matter.
>
> Thoughts?

I was going to say that it won't cool properly ;-)

In my vast experience (of fuzting with ONE automotive alternator) I don't
see any other reason why you can't spin it the other way.



Posted by Martin Riddle on August 15, 2008, 5:28 pm
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|
| > Is there any reason a marine alternator with built in electronic regulator
| > cannot be run in the opposite direction it's designed for IF proper
| > cooling is still available?
| >
| > I can see that spinning it backwards with the existing fan blades won't
| > cool it, but other than that, I can't see how direction would matter.
| >
| > Thoughts?
|
| I was going to say that it won't cool properly ;-)
|
| In my vast experience (of fuzting with ONE automotive alternator) I don't
| see any other reason why you can't spin it the other way.
|
|

You might be able to find the reversed fan in a good alternator shop. Since with
marine twins, one is usually running in
reversed rotation. And Im sure they both have alts.

Cheers



Posted by Martin Riddle on August 15, 2008, 6:12 pm
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|
||
|| > Is there any reason a marine alternator with built in electronic regulator
|| > cannot be run in the opposite direction it's designed for IF proper
|| > cooling is still available?
|| >
|| > I can see that spinning it backwards with the existing fan blades won't
|| > cool it, but other than that, I can't see how direction would matter.
|| >
|| > Thoughts?
||
|| I was going to say that it won't cool properly ;-)
||
|| In my vast experience (of fuzting with ONE automotive alternator) I don't
|| see any other reason why you can't spin it the other way.
||
||
|
| You might be able to find the reversed fan in a good alternator shop. Since
with marine twins, one is usually running in
| reversed rotation. And Im sure they both have alts.
|
| Cheers
|

ACDELCO catalog, ref see the 12SI, pg 9, for reverse rotation models.
http://www.delcoremy.com/pdfs/ProdRefGuide.pdf

Cheers



Posted by Neon John on August 15, 2008, 7:52 pm
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On Fri, 15 Aug 2008 16:42:50 +0000 (UTC), Cydrome Leader

>Is there any reason a marine alternator with built in electronic regulator
>cannot be run in the opposite direction it's designed for IF proper
>cooling is still available?
>
>I can see that spinning it backwards with the existing fan blades won't
>cool it, but other than that, I can't see how direction would matter.

Other than the fan, it makes no difference.

John
--
John De Armond
See my website for my current email address
http://www.neon-john.com
http://www.johndearmond.com <-- best little blog on the net!
Tellico Plains, Occupied TN
There is room for all of God's creatures.... Right next to the mashed potatoes.


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