Re: 1948 8n-- no spark

Posted by Phil (NJ, AZ,Sask) on August 23, 2006 at 01:14:48 from (142.165.25.131):

In Reply to: Re: 1948 8n-- no spark posted by uh . . . Dell (WA) on August 22, 2006 at 18:08:02:

Dell,
Your getting closer in your math but you mistake low current with the right (limited) current. The ~4.0 ohm (coil + Ballast) results in 3 Amps circuit current starting & 3+ running at 14.5 volts. The 3 Amps will blow your socks off.

The original 12 coil was closer to 4.0 ohms and your .5 ohm resistor was a good solution, an oem ballast doesn't work, but since they changed the coil to 2.5 ohms PPL are burning out coils. The only way that a coil will overheat is if the current is TOO high and that is a design fault, Wrong Components.

The choice is actually simple. If you are wrong the coil melts resulting in $$ damage. If I am wrong the tractor won't start & run but “no” damage is done and you can change it.

RE: 3 ohm round coils.. If the coil can dissipate the heat, and it can, why would anyone disagree with using that coil? My comment was to "Sounder's" 3.0 ohm comparing of the front mount coils ability to dissipate heat, of 58 watts, to that of a "proven" round coil that dissipates 70 watts. (Worst Case).

JMHO

Replies:

• Re: 1948 8n-- no spark souNdguy 05:53:41 08/23/06 (0)
• Re: 1948 8n-- no spark souNdguy 05:01:09 08/23/06 (0)

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