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John Deere Tractors Discussion Forum
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Seminar at New York Expo

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BMeyer

07-18-2003 17:24:54




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Dad and I attended one of your electrical seminars at the show in NY. It was a nicely done job on your part and very informative on ours. Dad mentioned later in the day that he wished he'd wrote down the drawing you had on the dry erase board concerning the by-pass for cold weather starts. If I payed attention, that by-pass was primarily for the Waterloo tractors.

We throughly enjoyed your presentation.

BMeyer

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John T

07-19-2003 07:13:12




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 Re: Seminar at New York Expo in reply to BMeyer, 07-18-2003 17:24:54  
The by pass circuit you mentioned which I had drawn on the board was the Ballast Resistor by pass which by passed the ballast rersistor, whereby full battery voltage was applied to the coil ONLY when the cranking motor was running. Otherwise, the ballast is in the ignition circuit (from switch to coils high input side) and it drops approximately 6 volts leaving 6 across the 6 volt coil. For it to work, the start switch has to have that lil extra terminal which is hot ONLY when the switch is engaged and it sends full battery voltage to the load side of the ballast or input of coil (same point electrically) when starting the tractor. That increses the spark energy and helps starting especially under extreme cold conditions when battery efficiency is low plus cranking is harder. I had an entire Green Magazine article on that subject some time back so if you want a copy of it e mail me and I can send it to you. Glad you enjoyed the seminar.

John T Nordhoff

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????

07-18-2003 20:02:46




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 Re: Seminar at New York Expo in reply to BMeyer, 07-18-2003 17:24:54  
So who is "your"?



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BMeyer

07-19-2003 04:28:47




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 Re: Re: Seminar at New York Expo in reply to ????, 07-18-2003 20:02:46  
I was referring to John T. Filling in the blank for 'your' would have been helpful. Sorry.



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