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GE did
figure out the error of their ways with the field reversing control.
Have you noticed that you don't see the E-15 owners presenting a parade
of problems after that control scheme was abandoned ? The early E-15
tractors (And the 'stunted' E-12S.) were the only ones saddled with
this "Asking For Trouble" arrangement. :) RJ Where a Series II Simpson 260® peacefully coexists with a Fluke 87®. David Roden (Akron OH USA) wrote: Can't help you on the solar part, but I can tell you that I fitted an Alltrax controller to my E15 a few years ago. I would never go back to the factory speed control. The Alltrax is buttery-smooth; I can move the tractor by centimeters. (As a note, there are other transistor controllers that can provide the same service, it's just that this one is configured for ETs.) It's also more reliable. Folks will tell you that the big advantage of the GE contactor controller is that it's easy to work on because it's so straightforward. They're right, and that's a good thing, because you'll be working on it a fair bit, if my experience is any indication. On the other hand, once you get the Alltrax installed, it JUST WORKS. When I had the GE contactor controller, I was forever fixing something, either a semiconductor on one of the cards or the burnt reversing relay contacts. The final straw came the blustery winter's day when I was plowing and had to reverse the tractor by raising the hood, lowering the relay panel, and pushing on the reverse relay. You can certainly rebuild or replace the various components of the GE controller, and that will probably improve its reliability. However, IMO it's not worth working on. If yours works, I'd say use it until it doesn't, and then rip it out and put in something that wasn't developed in the Apollo Space Program era. But as you'd expect there are plenty of opinions to the contrary here. ;-) _______________________________________________ Elec-trak mailing list Elec-trak cosmos phy tufts edu https://cosmos.phy.tufts.edu/mailman/listinfo.cgi/elec-trak |