Trev Borg
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| posted on 9/4/07 at 08:30 PM |
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Alternator facing backwards
I have not got room to fit my alternator in the usual place so i intend putting it in fron of the engine facing backwards.
Is there problems associated with doing this, due to thing running in the other direction.
Should i try and get an alternator that would normaly run in that direction?
If so, which one run the wrong way. ( i'm thinking older jap cars ?)
Before you judge a man, walk a mile in his shoes.
By that time, who cares.
You're a mile away, and you've got his shoes
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DIY Si
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| posted on 9/4/07 at 08:34 PM |
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It's been done before, but I can't remember who by. AS you've assumed, as long as it spins in its intended direction then all will
be well, although the bracket for it would need to be quite stiff and probably fairly big. You could use a "normal" one and a longer belt
to wrap the now correct way round it, or use an idler wheel to alter it, or try an older Honda one, as they span the wrong way
“Let your plans be dark and as impenetratable as night, and when you move, fall like a thunderbolt.”
Sun Tzu, The Art of War
My new blog: http://spritecave.blogspot.co.uk/
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BenB
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| posted on 9/4/07 at 09:05 PM |
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Apparantly it doesn't make any difference if you spin it backwards....
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Peteff
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| posted on 9/4/07 at 11:12 PM |
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Apparantly it doesn't make any difference if you spin it backwards....
It might make a difference if you have an old alternator with worn brushes but as said above they will charge in either direction.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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Fatgadget
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| posted on 10/4/07 at 12:03 AM |
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Rotate the brushes?
As said an alternator is not directional. A dynamo is!
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turbodisplay
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| posted on 10/4/07 at 05:39 AM |
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Get an alternator that is intended to be run in that direction as the brushed are normally offset.
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Trev Borg
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| posted on 10/4/07 at 06:26 AM |
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How about cooling, the fan will be directional ?
Before you judge a man, walk a mile in his shoes.
By that time, who cares.
You're a mile away, and you've got his shoes
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britishtrident
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| posted on 10/4/07 at 07:48 AM |
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Running the fan backwards will be very inefficient.
Alternator off a Honda-Rover (216Gsi or 416Gsi or 620) will do the trick
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Trev Borg
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| posted on 10/4/07 at 06:23 PM |
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Which engines go backwards then?
Alternator off a Honda-Rover (216Gsi or 416Gsi or 620)
HONDA Civic 1.5i 16V ED.. 88-92
HONDA Civic 1.5i 16V AT ED.. 88-92
HONDA Civic 1.6i 16V ED7 88-91
HONDA Concerto 1.6i 16V MA 89-93
HONDA Concerto 1.6i 16V AT MA 89-93
HONDA Shuttle 1.5 88-90
HONDA Civic 1.5i EG4 92-95
ROVER 216 1.6i 16V 91-96
ROVER 216 1.6i 16V AT 91-96
ROVER 416 Gti 90-92
ROVER 416 16v 92-96 ?
how about these ?
Before you judge a man, walk a mile in his shoes.
By that time, who cares.
You're a mile away, and you've got his shoes
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britishtrident
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| posted on 10/4/07 at 09:29 PM |
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Thats about it apart from Chrysler Alpines & Horizions -- but they had external electro-magnetic voltage regulators.
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Trev Borg
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| posted on 10/4/07 at 10:11 PM |
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http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=003&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=130097682688&rd=1&rd=1
/>
how abot this one ?
Before you judge a man, walk a mile in his shoes.
By that time, who cares.
You're a mile away, and you've got his shoes
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02GF74
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| posted on 12/4/07 at 08:00 AM |
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quote:
Originally posted by britishtrident
Running the fan backwards will be very inefficient.
Alternator off a Honda-Rover (216Gsi or 416Gsi or 620) will do the trick
what makes you say that?I wasn;t aware of the offset bsuhes, of the 2 lucas ones I have taken apart, they looked 100% radial.
The fan would need to be changed as the blades are shaped to scoop air inth the alternator.
As said, some Honda engines are the most common ones that run anti-clockwise.
It must be really tight in there if you cannot fit an alternator on eitehr side of the eninge 
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MikeRJ
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| posted on 12/4/07 at 02:15 PM |
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quote:
Originally posted by 02GF74
The fan would need to be changed as the blades are shaped to scoop air inth the alternator.
The centrifugal fans mounted behind the pulley suck air out of the alternator, the cool air enters from the other end. The blades of the fan are
usualy offset to make it work more efficiently in the normal direction of rotation.
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PaulBuz
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| posted on 13/4/07 at 03:46 PM |
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This is my solution.
The alt will run just as well forwards as backwards, cooling issues aside.
I'm hoping that the alt. will be relatively lightly loaded compared to the load from the donor car, so should'nt have any probs with
cooling.....
But if I do I'll just rearrange the fan set up.
 
Rescued attachment alt.jpg
ATB
Paul
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turbodisplay
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| posted on 13/4/07 at 05:11 PM |
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Nice setup! I looked into making my alt run backwards but stoped as i was concerned about cooling, brushes etc.
I mounted my alt further up above my left cylinder bank.
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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