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#99709 03/07/2007 3:01 PM | Joined: Feb 2007 Posts: 83 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2007 Posts: 83 | i want to upgrade the 39 from 6v. to 12 volt . it's a 235 , but what size diameter pulley should go on the new alternator ( to keep it charging well ) ? | | |
#99710 03/07/2007 7:56 PM | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | project 39,
If you buy a rebuilt or new alternator from your auto parts store, it will have the proper diameter pulley on it for its intended application. The same would hold true for a salvage yard..the alternator will have the pulley on it that makes it work right.
The RPM range of your 235 won't be far enough out from alternator equipped engines for you to need to change pulleys. It will probably charge fine. The single wire alternators require an initial 'rev' to get them going, but this would be done almost automatically and is the nature of this style.
Your '39 probably has a big old belt on it and this might be the issue. I am winging most of this post, so the best thing for you to do is go to the 'search' icon in the upper right of this page and look for 'alternator pulley' or 'generator pulley' and read the true poop!
Stuart | | |
#99711 03/07/2007 10:26 PM | Joined: Feb 2007 Posts: 83 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2007 Posts: 83 | thanks for the input stuart ! | | |
#99712 03/07/2007 11:25 PM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Stuart is right. If you have the wide belt a pulley off the gen. will fit. The alt doesn,t have a groove & key. If you tighten the nut good it will stay.
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