Super H electrical

aaachris · Jun 24, 2008

I have the tractor charging and running on 6v pos ground. The regulator and coil is 6 volt also. I was burning up points on a regular basis so I added a ballest resistor to the coil primary circuit. I should note the coil and regulator were purchased from TSC and the ballest resistor was purchased from autozone. Problem is, as soon as i installed the resistor, im blowing a small amount black out the exhaust and its a bit hard to start. When I bypass the resistor, it fires right up and no black smoke, runs perfect. Do I have the incorrect resistor?
Any thoughts??
Thanks!

Janicholson · Jun 24, 2008

There should be no resistor in the circuit. The points are burning from one of three things. Either there is grease/oil getting on them, or the coil is partially shorted and drawing too much current, or the condenser is out of specification.
I suspect changing the coil will make the difference. No 6v tractor, that I know of, has a ballast resistor stock. JimN

Bob M · Jun 24, 2008

Like Jim points out below the 6 volt Super H does not use a resistor.

As to your points burning problem, also as Jim mentions the cause can be a bad condenser, bad coil (draws too much current) or oil contamination on the points.

Point contamination is easy to spot. To narrow it down between condenser and coil, observe the ammeter with the ign switch "on" and the engine stopped. If it reads more than 3 - 4 amps discharge the coil's drawing too much current and overloading the points. Otherwise suspect a bad condenser. (Just because both coil and condenser are new doesn't mean they're good out of the box - especially if they came from China!)

Bob M · Jun 24, 2008

Actually Jim the earlier Ford N series tractors with the (#*@% front mount distributor (9N/2N) employ a resistor block in the coil primary circuit. (Made this discovery the hard way on my brother's 9N a few years ago...)

AFIK it's the only 6 volt tractor so equipped however.

John T · Jun 24, 2008

My best guess just sittin here in the dark is a bad, or not grounded, or not wired to points, or an incorrect sized condensor. (I agree with Jim n Bob, dont use any ballast if its a 6 volt tractor n 6 volt coil)

If the condensor is too big the points could last a long time, if its too small (or dont have a good ground connection to distributor, insure that) the points will burn up prematurely

Toss the ballast n get the right condensor would be my first try. If thats not it n you suspect the coil, see if its primary resistance (between lil + and - terminals)
is around 1.2 to under 2 ohms or so Id expect for a 6 volt coil.

John T

Super H electrical

aaachris

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Janicholson

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Bob M

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Bob M

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John T

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