If a simple, old-school and cheap solution is desired, I still have the original 48V transformer charger from my Lectric Leopard up in my attic. I bought the car with only a few hundred original miles and immediately upgraded everything to 120V, so it can't have been used more than a few times. I'd be happy to see it gone for an attractive price.
Chris On Sun, Jun 2, 2019 at 9:15 PM brucedp5 via EV <[email protected]> wrote: > > > [ref > > http://electric-vehicle-discussion-list.413529.n4.nabble.com/1980-Commuta-Car-tp4693753.html > >charger doesn't work; when I plug the car in, the on-dash charging ammeter > bumps, then zeroes< > ] > > % Lee is one of several on the evdl that know &loves comuta-cars > https://www.google.com/search?q=comuta-cars > > A search > https://www.google.com/search?q=1980+comuta-car+charger+schematics&tbm=isch > gives > > http://www.evdl.org/docs/c_car_charger.jpg > evdl's charger schematic > > http://www.geocities.ws/commutacar/ > Mike Chancey's commutacar site > > http://www.geocities.ws/commutacar/cir24.gif > > http://www.geocities.ws/commutacar/cir26.gif > > http://www.didik.com/cit_part.htm > parts list shows 48v charger > > http://www.evperformance.com/index.php?route=news/article&news_id=5 > osciloscope captures of charger circuit > > https://www.google.com/search?q=comuta+car+parts > > I'll assume Lambert wants to keep the citicar original (old-school) and > will > deleve into the charger's anchient design drawn from the 1970's club-car > golf-carts. > > When I look at its schematic, it reminds me of what I cut my teeth on, > way-way back in grade school talking electronics with my Lockheed Engineer > Dad. > A center tapped secondary winding with 2 diode feeding 2 scrs, a zenor > diode > and a thermistor to help with current regulation ... > ( : old : ). > > But purists forgive me, this is achiest technology, long before the > switching circuitry designs of today. Its old saturated transformer > windings, and chopped/spiky current output design can't be more than 50% > efficient. That means a lot of the power pulled from the AC (L1) outlet is > wasted and does not go into the pack. > > An L1 outlet can supply (120VAC*12A= ) 1.4kW, which means only 700W goes > into the 48VDC PbSO4 pack (700/48= ) an average of 14ADC charging current. > The fuses are rated higher to handle the spiky currents. > > I am coming from a different camp of thought than purists and would not > want > to try to repair this ancient technology. I would yank out the old-tech and > install today's-tech. > > David's Delta-Q idea is a good one as an upgrade path. > > > At the 2015 Silicon Valley NDEW EVent > https://brucedp15.neocities.org/eaasvr15/ > 30% down the page, shows a Citicar owner who had done several upgrades > https://brucedp15.neocities.org/eaasvr15/eaasvr15-20150919-brucedp-12l.jpg > 'The Citi-car had been upgraded to a 60V Li-ion pack using a 500A > controller and motor r:35+mi ts:40+mph' > > As a boy, I would respectfully listen to my Dad's (depression era, no > jobs=no-money) childhood achievements of brings an old used bicycle back to > life by sanding the wooden rims/wheels ... > https://www.wheelsofthepast.org/upload/IMG_1296.jpg > (all the while I'm thinking: Wow how old-tech those days were ... > when a 5-speed stingray/rat-bike with banana seats were all the rage > > http://www.ratrodbikes.com/forum/index.php?threads/stingrays-that-i-fixed-up-over-the-years.26088/ > when I was young, but I was already too tall for them) > > There comes a time when cars with wooden wheels > > https://forums.aaca.org/topic/162125-how-late-was-wood-spoke-wheels-a-option/ > are just too old to support or safe. > > > A search > > https://www.ebay.com/sch/i.html?_from=R40&_nkw=48v+15a+Battery+Charger&_sacat=48618&LH_BIN=1&_sop=15 > gives > > https://www.ebay.com/itm/Automatic-48V-10A-15A-20A-Battery-Charger-Current-Switchable-MCU-Controlled-new/273693743819 > Which also has the advantage of running off 120 or 220VAC (like a > Delta-Q). > That means it could be made to run of today's j1772 EVSE (public or home). > Here are other links to explore: > > https://www.ebay.com/i/173497752010?chn=ps > > > https://www.ebay.com/sch/i.html?_from=R40&_nkw=48v+charger&_sacat=0&LH_TitleDesc=0&_sop=15&LH_BIN=1&_pgn=3 > > https://www.google.com/search?q=48+Volt+Battery+Charger+Golf+Cart > > If only wanted to keep his pack healthy with a low maintenance charger, > while you work on repairing the old charger, consider: > > https://www.ebay.com/itm/48V-Volt-2-5A-Battery-Charger-for-Electric-Car-E-bike-Smart-Scooter-Adapter-USA/282979879433?epid=602991451 > > Good Luck :-) > > > > > For EVLN EV-newswire posts use: > http://evdl.org/archive/ > > > {brucedp.neocities.org} > > -- > Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/ > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA ( > http://groups.yahoo.com/group/NEDRA) > > <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=icon> Virus-free. www.avast.com <https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail&utm_term=link> <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> -------------- next part -------------- An HTML attachment was scrubbed... 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