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If you tried it, and it worked, then i wouldn't second guess yourself. I would love to find a Delphi "permagen" alternator. I would think that would be the way to go... http://delphi.com/manufacturers/dti/available-technologies/automotive-components-for-license/variable-speed-generator-for-14v-42v/ > From: elec-trak-request cosmos phy tufts edu > Subject: Elec-trak Digest, Vol 9, Issue 16 > To: elec-trak cosmos phy tufts edu > Date: Tue, 18 Jan 2011 06:00:02 -0500 > > Send Elec-trak mailing list submissions to > elec-trak cosmos phy tufts edu > > To subscribe or unsubscribe via the World Wide Web, visit > https://cosmos.phy.tufts.edu/mailman/listinfo.cgi/elec-trak > or, via email, send a message with subject or body 'help' to > elec-trak-request cosmos phy tufts edu > > You can reach the person managing the list at > elec-trak-owner cosmos phy tufts edu > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Elec-trak digest..." > > > Today's Topics: > > 1. Re: Elec-trak Digest, Vol 9, Issue 15 (Rhett George) > 2. Re: Elec-trak Digest, Vol 9, Issue 15 (Chris Zach) > 3. Re: Hybrid Electrak? (Robert Adsett) > 4. Re: Elec-trak Digest, Vol 9, Issue 15 (Dean Stuckmann) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Mon, 17 Jan 2011 15:12:09 -0500 > From: Rhett George <rtg ee duke edu> > To: elec-trak cosmos phy tufts edu > Subject: Re: (ET) Elec-trak Digest, Vol 9, Issue 15 > Message-ID: <20110117201209 GB2184 ee duke edu> > Content-Type: text/plain; charset=us-ascii > > > ---------------------------------------------------------------------- > > > > Date: Mon, 17 Jan 2011 01:41:48 -0500 > > From: Chris Zach <cz alembic crystel com> > > To: elec-trak cosmos phy tufts edu > > Subject: Re: (ET) Hybrid Electrak? > > > > On 1/15/2011 8:26 PM, Robert Adsett wrote: > > > On 1/15/2011 10:35 AM, Banks, Michael J. wrote: > > >> I was under the impression, that using the tractor while charging was a > > >> bad thing. > > > > > > That depends on the charger. There are a couple of circumstances where > > > using a charger on a running EV could cause damage. > > > > There is another problem: If you pull too much power through the charger > > you could blow the diodes. That could be a problem. > > > > C > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > - Greetings - > > Think about the current draw that a well-drained battery pack will put on > the charger, especially the original GE charger. If that does not blow > the diodes, then the charger boosting the batteries while operating is not > likely to blow diodes. At least this is my current viewpoint. > > Rhett > > > > > ------------------------------ > > Message: 2 > Date: Mon, 17 Jan 2011 16:03:14 -0500 > From: Chris Zach <cz alembic crystel com> > To: elec-trak cosmos phy tufts edu > Subject: Re: (ET) Elec-trak Digest, Vol 9, Issue 15 > Message-ID: <4D34AE92 4090700 alembic crystel com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > > Think about the current draw that a well-drained battery pack will put on > > the charger, especially the original GE charger. If that does not blow > > the diodes, then the charger boosting the batteries while operating is not > > likely to blow diodes. At least this is my current viewpoint. > > 40 amps at 36 volts :-) Seriously, I have a Link-20 on my elec-trak, and > it reads about 20a per string when the NiCDs are dead. > > Snow blower sucks 150+. Cutoff voltage on my E20 is about 30 volts or > so. Any lower than that and the relays start dropping out. > > What is the rating on the diodes? If one really wanted to do this I > would recommend a fuse on the DC side of the diodes so it doesn't > over-draw the charger. Maybe a 50a fuse. > > Chris > > > > > > > Rhett > > > > > > _______________________________________________ > > Elec-trak mailing list > > Elec-trak cosmos phy tufts edu > > https://cosmos.phy.tufts.edu/mailman/listinfo.cgi/elec-trak > > > > > ------------------------------ > > Message: 3 > Date: Mon, 17 Jan 2011 22:51:49 -0500 > From: Robert Adsett <subscriptions aeolusdevelopment com> > To: elec-trak cosmos phy tufts edu > Subject: Re: (ET) Hybrid Electrak? > Message-ID: <4D350E55 7090006 aeolusdevelopment com> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > On 1/17/2011 1:41 AM, Chris Zach wrote: > > On 1/15/2011 8:26 PM, Robert Adsett wrote: > >> On 1/15/2011 10:35 AM, Banks, Michael J. wrote: > >>> I was under the impression, that using the tractor while charging was a > >>> bad thing. > >> > >> That depends on the charger. There are a couple of circumstances where > >> using a charger on a running EV could cause damage. > > > > There is another problem: If you pull too much power through the charger > > you could blow the diodes. That could be a problem. > > Definitely a point. > > Any decent modern charger will have a brick wall current limit that > should prevent that but simpler chargers could well be prone to that > given sufficient load. > > Add it to the list. > > Robert > > -- > http://www.aeolusdevelopment.com/ > > From the Divided by a Common Language File (Edited to protect the guilty) > ME - "I'd like to get Price and delivery for connector Part # XXXXX" > Dist./Rep - "$X.XX Lead time 37 days" > ME - "Anything we can do about lead time? 37 days seems a bit high." > Dist./Rep - "that is the lead time given because our stock is live.... > we currently have stock." > > > > ------------------------------ > > Message: 4 > Date: Mon, 17 Jan 2011 23:03:50 -0600 > From: Dean Stuckmann <dstuck lakefield net> > To: Chris Zach <cz alembic crystel com> > Cc: elec-trak cosmos phy tufts edu > Subject: Re: (ET) Elec-trak Digest, Vol 9, Issue 15 > Message-ID: <1D89609B-1F3E-4019-8B25-02744EC374ED lakefield net> > Content-Type: text/plain; charset="us-ascii" > > Maybe ignorance is bliss. Never had trouble with the charger, thrower, or tractor. > As I stated in other postings I don't know much about electricity. Decided to try it based on these thoughts. > > - I knew that the ET charger (and the ET) are primitive at best. > - I knew that I was going to use power faster than I could replace it > - I did not think I could over draw the charger since I thought its output was limited to the amount of AC going into it > - I felt that the batteries would be a buffer, unlike trying to run the tractor hardwired to the charger alone > - I always had the blower running (even on the long, slow reverse runs) so there was no big shock to the systems on a blower restart > - Everyone has heard of booster/chargers for starting vehicles > > So I tried it, and it worked quite well. Maybe I was lucky or maybe the primitive electrics are more robust than we think. > > There is a lot of postings about what could happen. Theory aside, have any of you had failures doing this with the standard ET electrics? Or am I the only one foolish enough to try it? > > Dean > > On Jan 17, 2011, at 3:03 PM, Chris Zach wrote: > > >> Think about the current draw that a well-drained battery pack will put on > >> the charger, especially the original GE charger. If that does not blow > >> the diodes, then the charger boosting the batteries while operating is not > >> likely to blow diodes. At least this is my current viewpoint. > > > > 40 amps at 36 volts :-) Seriously, I have a Link-20 on my elec-trak, and it reads about 20a per string when the NiCDs are dead. > > > > Snow blower sucks 150+. Cutoff voltage on my E20 is about 30 volts or so. Any lower than that and the relays start dropping out. > > > > What is the rating on the diodes? If one really wanted to do this I would recommend a fuse on the DC side of the diodes so it doesn't over-draw the charger. Maybe a 50a fuse. > > > > Chris > > > > > > > >> > >> Rhett > >> > >> > >> _______________________________________________ > >> Elec-trak mailing list > >> Elec-trak cosmos phy tufts edu > >> https://cosmos.phy.tufts.edu/mailman/listinfo.cgi/elec-trak > > > > > > _______________________________________________ > > Elec-trak mailing list > > Elec-trak cosmos phy tufts edu > > https://cosmos.phy.tufts.edu/mailman/listinfo.cgi/elec-trak > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: <http://cosmos.phy.tufts.edu/mhonarc/elec-trak/attachments/20110117/4f1fb5a6/attachment.html> > > ------------------------------ > > _______________________________________________ > Elec-trak mailing list > Elec-trak cosmos phy tufts edu > https://cosmos.phy.tufts.edu/mailman/listinfo.cgi/elec-trak > > > End of Elec-trak Digest, Vol 9, Issue 16 > **************************************** |