REFLECTOR: Franklin Will not turnover when hot

[Brian Michalk]

Good idea.
While you are doing this, measure the voltage drop across the +battery 
to the +starter post while cranking.  Then do the same for ground.  The 
one that shows higher voltage is the one with a bad connection somewhere.

You don't actually have to be cranking.  Just get a big load out there 
in place of the starter.  22 or 24 gauge wire for a very short time is a 
big load before it burns up.

On 05/18/2011 10:41 PM, sbjknox wrote:
> I have been thinking about my last post and the possible early timing 
> issue
> and realize that for a test you don't need to mess with the timing, 
> simply
> try and crank it with the mags off.
>
> But beyond that, I suggest you make some voltage measurements...
> 1) Connect a voltmeter directly between the 'hot' starter terminal and 
> the
> case ground.  Crank for a couple seconds (mags off) and record voltage.
> 2) Repeat with the voltmeter  directly across the battery posts, not 
> on the
> cable clamps (or whatever you use to connect to the posts).
> 3) *Important* don't remain in the "locked rotor" crank mode for more 
> than
> two or three seconds.  There will likely be hundreds of Amps flowing and
> this equates to *many* Kilowatts of heat being generated!
> 4) After taking the voltage readings, feel with your hand, each and every
> connector, terminal, the starter and master solenoids for something hot.
> Warm can be normal but not hot.  Don't forget the return (GND) path 
> from the
> battery to the engine.  In that short of time, the mass of the battery 
> and
> starter is such that you probably won't notice any heat build-up in 
> them but
> be assured that if you hold the locked-rotor current for an extended 
> period
> of time, you will likely destroy the starter and/or battery and 
> solenoid(s).
> (altho, the long run of  #2 wire might save it).
>
> A six-dollar Harbor Freight digital voltmeter and some basic
> trouble-shooting  will serve you better than throwing several hundred
> dollars worth of starters and batterys on speculation at the problem.
>
> Sid Knox
> Oklahoma
>
> Velocity  173 RG  N199RS
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> W7QJQ
>
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