crazy question but.... - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
Electrical
Where does this wire go?
Includes Electrical mods, Lights, Stator,
Rectifier, Diagrams, etc

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post #1 of 18 (permalink) Old 06-07-2011, 03:23 PM Thread Starter
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crazy question but....

Has anyone thought of moding up a small alternator (car type maybe) to a bike?...not sure if this is posible.. but maybe under the seat with wheel attached to work off of the rear tire or somthing like that?.. just a thought...I know I know.. crazy right?
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post #2 of 18 (permalink) Old 06-07-2011, 04:02 PM
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Quote:
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Has anyone thought of moding up a small alternator (car type maybe) to a bike?...not sure if this is posible.. but maybe under the seat with wheel attached to work off of the rear tire or somthing like that?.. just a thought...I know I know.. crazy right?
Don't see why it wouldn't work. I could then pursue my dream of adding subwoofers to my bike.

2003 VN750 de-goated
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post #3 of 18 (permalink) Old 06-07-2011, 04:23 PM
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It's not crazy, it's just unconventional. If you could fit one and it had higher output than the stator, it would be great.

Just gotta figure out how to drive the alternator. One thing that comes to mind is friction drive. Have a pulley contact the rear tire (rubber to rubber) with enough tension and it should be able to drive it. Basically like bicycle dynamo, but using an alternator. However, I dunno if this would affect the tire in a negative way.

I read that that's how they drive those hubless wheels, by using some kinda rubber pulley or roll or some kinda rotating thingy that contacts the rear tire with enough force to drive it. Not sure if it's that simple or not, but for an alternator it shouldn't be more complicated than that.

Last edited by Ceal; 06-07-2011 at 04:25 PM.
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post #4 of 18 (permalink) Old 06-07-2011, 05:23 PM
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Saw one on a GW on youtube a couple of years ago that was run off a pulley at the front of the engine. A V-twin has the crankshaft perpendicular to the axis of the frame so that won`t work for us. I think it would be pretty difficult to get any sort of a practically drive set-up on the vn.

Gordon

1991 VN 750 -"Cosmic Lady" or "Bad Girl"?
Purchased May 16, 2008
Approx.19,300km (12,000 miles)

H-D windshield
Relocated R/R
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July 13, 2016, Riding on the DARKSIDE now, Classic Radial 165/80-15


TOP TEN THINGS A NEW RIDER/OWNER SHOULD DO. Click on link.
https://www.vn750.com/forum/11-vn750-general-discussion/9127-top-ten-items-you-would-suggest-new-owner-do-his-new-ride.html
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post #5 of 18 (permalink) Old 06-07-2011, 07:36 PM
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I looked into a 1 wire alternator offered for older vehicles for this exact purpose. I wanted more juice for the scoot. I nixed the idea due to mounting options.
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post #6 of 18 (permalink) Old 06-08-2011, 08:19 AM Thread Starter
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Quote:
Originally Posted by Ceal View Post
It's not crazy, it's just unconventional. If you could fit one and it had higher output than the stator, it would be great.

Just gotta figure out how to drive the alternator. One thing that comes to mind is friction drive. Have a pulley contact the rear tire (rubber to rubber) with enough tension and it should be able to drive it. Basically like bicycle dynamo, but using an alternator. However, I dunno if this would affect the tire in a negative way.

I read that that's how they drive those hubless wheels, by using some kinda rubber pulley or roll or some kinda rotating thingy that contacts the rear tire with enough force to drive it. Not sure if it's that simple or not, but for an alternator it shouldn't be more complicated than that.
That is exactly how I was thinking it could be done.. but your right .. not sure how it would affect the tire.. bike tires are a bit softer than regular tires.
it would go along way to adding more juice to our scoots though!
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post #7 of 18 (permalink) Old 06-08-2011, 08:58 AM
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I believe older BMWs cycles ran an external generator. Chain or belt drive...
On the Vulcan
Finding a place to mount it, and a way to drive it is the only problem.

KM

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post #8 of 18 (permalink) Old 06-08-2011, 09:00 AM
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Quote:
Originally Posted by clock152 View Post
Has anyone thought of moding up a small alternator (car type maybe) to a bike?...not sure if this is posible.. but maybe under the seat with wheel attached to work off of the rear tire or somthing like that?.. just a thought...I know I know.. crazy right?
This was discussed a few years ago:

https://www.vn750.com/forum/showpost....0&postcount=11

"....All I could come up with was adding a short keyed shaft to the end of the bolt that holds the flywheel onto the crankshaft and modifying the timing cover with an oil seal. Then you could attach a pulley or sprocket to the shaft on the outside of the left cover and drive an alternator mounted in front of the radiator."

Darrel
'03 Vulcan 750 (90k miles)
-Corbin Seat
-V-Force Windshield
-LeatherLyke Touring Bags
-Chrome Luggage Rack
-Headlight Modulator
-Brakelight Flasher
-MF Battery
-Heads-Up Voltage Monitor
-Replaced Stator (9,000 and 16,000 mi.)
-Oil-cooled Stator Mod (photos)
-Replaced and Relocated R/R
-Greased rear splines
-Fused Stator (photos)
-Metzeler ME880 Marathon 170/80-15 (Rear), 110/90-19 (Front)
-TOC MCCTs installed
-Headlight Relays
SOLD - 2013
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post #9 of 18 (permalink) Old 06-08-2011, 09:03 AM
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Here's a possibility of what you could use.



JEGS 1-Wire Alternator means just that--simply connect one wire from the alternator to the battery and you're done.
This line of alternators features an internal voltage regulator and turbo fan to keep internal components cool. Made in USA.

Finding the place to mount it & look decent is the trick. Connecting it to thre system is easy enough.

Under $70 By the way.
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post #10 of 18 (permalink) Old 06-08-2011, 09:26 AM
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So, this would be the cure to all our stator problems?

2003 VN750 de-goated
Kuryakyn ISO Grips
Kuryakyn LED Voltmeter
coastered
R/R relocated
Slipstreamer Hellfire windshield
Shindengen Mosfet R/R
Kawasaki Engine Guard
Fire & Steel Footpegs
Need Knifemaker to make me a seat like his

Hickory, NC
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