Posted by Bob M on August 25, 2008 at 13:26:59 from (151.190.254.108):
In Reply to: H charging prob;lem posted by PetePequawketfarm on August 25, 2008 at 10:42:53:
John T said: Like Jim, Im NO FAN of the 8 volt system as a band aid approach to fix a problem which a good heavy duty battery and 00 Gauge cables might cure, especially on an lil H although Id cut a guy a lil more slack if it were an M lol[/quote:ef87d7e1d5]
I agree 100% John T(!)
John T said: A genny dont necessarily know its voltage, thats a function (in great part within limits) of how fast it turns plus how much current is pumped through the field windings. So....
1) If its a cutout relay I think it will still charge an 8 volt battery NO MODS NECESSARY (notwithstanding cut in/out voltage adjustment) although maybe not at any super high charge rate.[/quote:ef87d7e1d5]
Yup. A cutout system is not much insensitive to system voltage. A "6 volt " genny and cutout will charge an 8 volt (or even a 12 volt...) battery - though at a lower rate and a higher cut-in RPM.
John T said: (2) If it has a VR that has 2 coils and one (not the cutout relay) is a current controller ONLY, I think it will still charge with no mods (other them perhaps cut in/out voltage) cuz the current control relay can still do its job.
The 2 relay VR's I'm familiar with (Delcos on IHC and MinneMo stuff) combine both the current and voltage regulating funtions into a single relay. They're extremely difficult to field adjust correctly to work on 6 volts - for 8 volts they're virtually impossible to get right.
[quote:ef87d7e1d5="John T"](3) HOWEVER if its a 3 coil or 2 coil relay and the one relay is a VOLTAGE CONTROL RELAY (or a combination current n voltage relay on that second coil) I think it needs some significant adjustments (air gaps or spring tensions) to charge an 8 volt battery.
Yes again. Need to increase the spring tension on the VR relay to "bump" the regulating set point from around 7 volts to a tad over 9 volts. (My experience is this is easier said than done however....)
[quote:ef87d7e1d5="John T"] PS follow Jims advice about Polarity and be sure n polarize the genny and have a VR thats compatible with your ground polarity.
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Choosin, Mounting and Using a Bush Hog Type Mower - by Francis Robinson. Looking around at my new neighbors, most of whom are city raised and have recently acquired their first mini-farms of five to fifteen acres and also from reading questions ask at various discussion sites on the web it is frighteningly apparent that a great many guys (and a few gals) are learning by trial and error and mostly error how to use a very dangerous piece of farm equipment. It is also very apparent that these folks are getting a lot of very poor and often very dangerous advice fro
... [Read Article]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
