Alternator conversion


Information and questions on GL1200 Goldwings (1984-1987)
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sportsfreaked
Posts: 353
Joined: Fri Mar 13, 2015 7:23 am
Location: Independence, MO
Motorcycle: 1981 Honda Goldwing Interstate GL1100I
1985 Honda Goldwing Limited Edition gl1200

Alternator conversion

Post by sportsfreaked » Tue Sep 25, 2018 10:28 am



I have a question on alternator conversion. The alternator all have the v belt pulley and most guys have used a pulley from a prelude for the crank but those are serpentine. The crank bolt is 12mm if I'm correct. Will a 4 inch pulley with a 1/2 inch bore work for the crank? I can find plenty of 4 inch v belt idler pulleys but they ha e 1/2 bore not 12mm. As always thanks for the time and knowledge. 85 LTD stator finally bit the dust☹


Thanks to all who answer and help. It is greatly appreciated!
Ed

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Rednaxs60
Posts: 1836
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD
1995 GL1500 SE CDN Edition
2008 GL1800 (sold)
Ontario 1985 GL1200 LTD (sold)

Re: Alternator conversion

Post by Rednaxs60 » Tue Sep 25, 2018 11:34 am

The crank pulley bore should be an interference fit, want it to turn true. You can always try to find a 5/8 inch OD bushing and ream out the bore to 12 mm, and drill out the pulley to match the 5/8 inch OD of the bushing. You can always get a serpentine pulley for the alternator from an electrical shop.
"When you write the story of your life, don't let anyone else hold the pen"

Ernest

sportsfreaked
Posts: 353
Joined: Fri Mar 13, 2015 7:23 am
Location: Independence, MO
Motorcycle: 1981 Honda Goldwing Interstate GL1100I
1985 Honda Goldwing Limited Edition gl1200

Re: Alternator conversion

Post by sportsfreaked » Tue Sep 25, 2018 12:54 pm

Ernest what do you mean by interference fit? Do you mean it needs to be tight on the bolt as it go thru the pulley?
Thanks
Thanks to all who answer and help. It is greatly appreciated!
Ed

User avatar
Rednaxs60
Posts: 1836
Joined: Wed Nov 18, 2015 12:44 pm
Location: Victoria, British Columbia, Canada
Motorcycle: 1985 GL1200 LTD
1995 GL1500 SE CDN Edition
2008 GL1800 (sold)
Ontario 1985 GL1200 LTD (sold)

Re: Alternator conversion

Post by Rednaxs60 » Tue Sep 25, 2018 1:16 pm

Yes, tight on the bolt. Interference fit, can be called a friction fit, even called a press fit is where you can just push it through or use some persuasion from a hammer, and joins the two parts without any other form of fastening. I like to call it an interference fit.

A press fit is generally where you have to use a hydraulic press or a bigger hammer because a large force is used to join the two parts in question.

Reader's Digest version.

Cheers


"When you write the story of your life, don't let anyone else hold the pen"

Ernest

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