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Electronic voltage regulators

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Bus Driver

01-18-2001 18:09:14




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On a couple of other boards I posted questions about the electronic voltage regulators advertised for some of the old cars from the same era as some of our tractors- some of those cars had cutouts only. Lots of those cars used essentially the same generators as the tractors. I got one good answer from those posts. Anyone here have any experience with these regulators?




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buckeye al

01-19-2001 14:31:20




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 Re: Electronic voltage regulators in reply to Bus Driver, 01-18-2001 18:09:14  
I have replaced several mechanical regulators with electronic regulators but they have all beeen on tractors that were factory equipped with Delco alternators. Two Olivers & one IH. The IH was a cinch 'cause this tractor had an idiot light in the dash. The Ollies however had no dash lights and did not use this part of the mechanical regulator. To work around this problem, I pulled a wire from the battery side of the coil through the wire loom up to the alternator. At that point I installed a side marker lamp holder from a GM car and slid it behind the new electronic regulator. If you take a peek over the right side of the tractor when the key is on but engine is not running you can see light shining from under the regulator. Otherwise you can't tell it's there. Soon as they start, the light goes off & the ammeter jumps to charge. If the light bulb burns out, falls out or gets broken and burns out, the alternator will not charge. You really don't need a light bulb, just a simple resistor would do. I just used the marker light 'cause it was handy and the owner could understand it better than "resistor". The 1650 I first did this with has been running this way for over 4 years now & never had a problem. It's a farm tractor. Never been in a parade yet. I imagine the electronic ones for generators would work similarly. Good luck!

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John T

01-19-2001 06:35:47




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 Re: Electronic voltage regulators in reply to Bus Driver, 01-18-2001 18:09:14  
Tom, heres the deal. Yes they (solid states in general) are superior (in theory and most PROPERLY used applications) than mechanical switching devices, because you dont have the continual degradation/burning/carbon build up of the switching contacts, they simply turn a solid state device on or off, which once burned in, doesnt degrade hardly at all afterwards. _____ _____HOWEVER_____ ____ there can be lots of problems. If they are designed for a higher RPM than the old tractors, they may not work right. AND, they dont look right and arent original if authenticity matters. AND they are probably designed more for the old cars than our tractors. So if authenticity is not a concern, and they are designed for a lower RPM tractor application and the generator is fine, and you want one then go for it, otherwise, go with a new mechanical device. Good Luck Ol Engineer John T

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Tom

01-19-2001 04:38:34




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 Re: Electronic voltage regulators in reply to Bus Driver, 01-18-2001 18:09:14  
I had my generator rebuilt for my 1944 A. It had the cut-out charging system and the cut-out needed replaced also. The shop gave me a solid state cut-out that didn't work, so I went back to the shop to have the whole thing tested. It turns out that the generator needed to spin much faster than it ever would on a tractor to engage the cut-out. I am still having problems with the charging system so I ditched the whole cut-out thing and ordered a generator that will handle a voltage regulator. Solid state cut-outs or voltage regulators don't look original anyway! If you wanted it to be more functional than correct you'd install an alternator and a 12-volt battery!

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Bus Driver

01-19-2001 10:08:17




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 Re: Re: Electronic voltage regulators in reply to Tom, 01-19-2001 04:38:34  
Thanks for taking the time to express your thoughts on the subject. I have not seen one of these devices. From my limited knowledge of electronics, I understand that voltage regulators are very simple circuits. Building an electronic regulator to handle the amperage requirements of the field coils of a vehicle generator is not so simple.



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