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New 8n project

N

nitebass9n

Member
I just picked up a side mount 8n that will pull start. Behind a truck. The wiring is messed up. It has the original generator on it and the guy was trying to use a 12 volt battery to start. I pulled it and got it running without a battery and the generator is running the motor and sending about 7 volts to battery terminals. I think the simplest thing is to just go buy a 6volt battery. It does have a resister mounted on the starter but I think it was swapped out from a 12 volt tractor at that farm. So with the new battery I might just order a new harness and start off right. The rest of the tractor is pretty good. Looks like a good candidate for restore one day.
 
I have never heard of putting resistor on the starter. they work just fine with 12 volts.

can you post a picture of what you have?
 
(quoted from post at 14:56:35 12/15/14) I have never heard of putting resistor on the starter. they work just fine with 12 volts.

can you post a picture of what you have?
Click to expand...
mvphoto13973.jpg


mvphoto13974.jpg
 
Plus the guy had taken the key ignition off and installed a toggle switch. That will never do. I'll get laughed at all over. Somebody way back painted it blue. Which is ok since there are no rust throughs at all. Just makes more repaint work.
 
Looks like the resister is mounted there because it was an easy place to mount it and bet if you trace the wires it will be in line with the coil and if it is it will cause running problems if on 6 volts
 
I think you're right, 12V conversion with a 6V coil.
Had they used a 12V coil they wouldn't have needed the resistor.
Your call on putting it back to 6V. Just take the resistor out.
New harness would be money well spent whether you buy one
or make one.
 

Thanks "old". I think I remember you from back in 2000-2001 when I was rebuilding a 41 9n. 9ner used to comment a lot too. Now it's all over again with another tractor. I'm really hoping this turns out to be a strong tractor. Been wanting to do this again for a while. Anyway, thanks for your input. I can use it.
 
nitebass........"looking for a certain amp size?", gonna guess yer askin'bout battery size. 6-volt cumm in 2-sizes, looonnng'n'narrow fer Buick and Chebbys. And semi-square 1A, fer Fords and N-Tractors. And NO, they do NOT fit thru the square top of hood access panel. While 8N's came from the factory 6-volt positive (+) ground, they work just fine negative (-) ground iff'n you re-polarize yer square voltage regulator under yer oil-pressure gauge. Just "arc-spark" the side-by-side BAT & ARM terminals. Simple, eh? ........HTH, electrical Dell
 
I can understand if a person was going to restore a tractor for show purposes then putting it all back to 6 volt makes sense but otherwise it doesn't. I buy 12 volt alternators -one wire and put them on my tractors. my batteries last a lot longer that way and the starting is several time better. 6 volt batteries just don't last. batteries aren't cheap anymore. Also can someome explain to me the difference between a 6volt and 12 volt coil. It would seem to me if you put 12volts to a coil then it would have 12 volts going through it from the charging system if you use 12 battery. im not sure so that's why I ask that questions. norm
 

More fun...this morning it has no spark. Tried jumping pos to ground and neg to starter post. Turns over just fine. Not a speck of spark. I think it sat for some time so might be that some parts need to go. Don't want to just start throwing parts at it though.
 
nitebass........ain't nuttin' wrong with using a good toggle switch fer ignition switch. Most key operated replacement ignition switches ain't got the internal "guts" (5-amps) to last very long. After replacing the ignition switch 3-times in one summer of brushhoggin', I got gryped, and botta 25A waterproof marine grade toggle switch and installed it under the corner of my eazy starting 6-volt 52-8N. Of course, I don't have little kiddies crawling on tractor playing farmer.......electrical Dell
 
Most likely the points are corroded from from sitting and need to be cleaned. BTDT many many times over the years on the tractors I have brought back to life
 
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