Register now to get rid of these ads!

Technical Alternator Pulley Too Big?

Discussion in 'The Hokey Ass Message Board' started by blowby, Jun 28, 2019.

  1. blowby
    Joined: Dec 27, 2012
    Posts: 6,730

    blowby
    Member
    from Nicasio Ca

    Grabbed this off a scrap heap. No idea what the plan was, wondering what make this alternator is, might keep it around.

    073.jpg 072.jpg
     
    mgtstumpy and Deuces like this.
  2. 49ratfink
    Joined: Feb 8, 2004
    Posts: 17,782

    49ratfink
    Member
    from California

    you will have to spin 10,000 RPM to charge the battery
     
    mgtstumpy, Deuces and Just Gary like this.
  3. e1956v
    Joined: Sep 29, 2009
    Posts: 1,525

    e1956v
    Alliance Vendor

    Its a Bosch looks like a VW mount.
     
    Deuces likes this.
  4. 325w
    Joined: Feb 18, 2008
    Posts: 5,334

    325w
    ALLIANCE MEMBER
    from texas

    At the local car factory we used to have 2 1/2 horse Briggs horozonal shaft motor with an alternator mounted with it. Remote battery charger.
     
    Register now to get rid of these ads!

  5. blowby
    Joined: Dec 27, 2012
    Posts: 6,730

    blowby
    Member
    from Nicasio Ca


    Thanks! Hmm, no foreign stuff here. I'll save the pulley if I can figure out how it comes off.
     
  6. Deuces
    Joined: Nov 3, 2009
    Posts: 18,809

    Deuces
    Member
    from Michigan

    Gear puller!...
     
  7. blowby
    Joined: Dec 27, 2012
    Posts: 6,730

    blowby
    Member
    from Nicasio Ca

    Think I see threads in there..
     
  8. Who's to say the big pulley isn't an accessory drive to something else? There is a small pulley as well after all.
     
    tb33anda3rd, firstinsteele and Deuces like this.
  9. blowby
    Joined: Dec 27, 2012
    Posts: 6,730

    blowby
    Member
    from Nicasio Ca

    Yeah if I had to guess I would say a windmill or river paddle or a hamster or a combination of things turned it. I know they make windmill generators out of car alternators.
     
    olscrounger and Deuces like this.
  10. 54vicky
    Joined: Dec 13, 2011
    Posts: 1,432

    54vicky
    Member

    possibly a prototype for a tesla:D:D
     
    Deuces likes this.
  11. Mr48chev
    Joined: Dec 28, 2007
    Posts: 27,192

    Mr48chev
    ALLIANCE MEMBER

    I'd say he hit it spot on. The alternator is driven by the small pulley and the large one drives some added accessory. Maybe someone's attempt at an off the grid setup where the large pulley drove a pump to pump water.
     
  12. 56sedandelivery
    Joined: Nov 21, 2006
    Posts: 6,260

    56sedandelivery
    ALLIANCE MEMBER

    Unusual to say the least. We used to modify a generator or alternator in drag cars with a larger than stock pulley in- stalled on them to slow them down, especially generators to help prevent them from tossing solder. But, never with THAT large of a pulley. Alternators charge at a more consistent rate regardless or pulley size or speed. I think it's someones attempt at off grid power also. Maybe look at some online, DIY off grid, power stations/windmill power/hydro power. The big pulley looks like it came off a clothes dryer. Let us know if you get it figured out; kinda cool. I am Butch/56sedandelivery.
     
  13. squirrel
    Joined: Sep 23, 2004
    Posts: 46,418

    squirrel
    Member

    or the alternator was just a convenient way to make a jackshaft, for a pulley speed reduction system for something like a bandsaw.
     
  14. blowby
    Joined: Dec 27, 2012
    Posts: 6,730

    blowby
    Member
    from Nicasio Ca

    The 3 wires coming out of it are new, somebody wanted it to do something electronically. They control the field coils I assume? And no more diodes for DC?
     
  15. squirrel
    Joined: Sep 23, 2004
    Posts: 46,418

    squirrel
    Member

    This is what the plastic gizmo with the round black thing looks like when removed. The brushes...and the voltage regulator, I think.

    vwreg.jpg

    The diodes would be inside the housing. The three flat blade terminals stick into the rectangular hole, and the big screw threaded terminals are bolts that go through the brass grommets near them.
    vwdiode.jpg
     
  16. Diavolo
    Joined: Apr 1, 2009
    Posts: 810

    Diavolo
    Member

    I would bet money the big pulley is from what is generally called a "swamp cooler" or evaporative air conditioner used in dry climates. I also agree that it is either powering something else or part of a homebrew off grid generator thing.
     
  17. Diavolo
    Joined: Apr 1, 2009
    Posts: 810

    Diavolo
    Member

    Looks like a pretty standard rectifier and regulator setup.
     
  18. squirrel
    Joined: Sep 23, 2004
    Posts: 46,418

    squirrel
    Member

    The middle part of that pulley, having a small pulley attached to it, does not look at all like a swamp cooler pulley. There's a swamp cooler right above my head, running, at this moment...I'm pretty well acquainted with them.

    pulley.jpg
     
  19. el Scotto
    Joined: Mar 3, 2004
    Posts: 4,352

    el Scotto
    Member
    from Tracy, CA

    I’ve always thought a GM 10si windmill battery charger would be a fun mini project... but then I remember I have cars I should be working on :)
     
    Deuces likes this.

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.