[DeTomaso] hot start problem solved

[Thomas Tornblom]

SOBill at aol.com skrev:
> FWIW,
>  
> OEM Pantera starter motors have a field windings which create the  magnetic 
> field in which the armature turns. Modern, hi torque, gear reduction  
> starter motors use permanent magnets to create the magnetic field for the  
> armature. This difference is what makes the modern motors so much smaller and  
> lighter.
>  
> The OEM motors can not act as a generator once the 12V to the motor  is 
> interrupted when the starter solenoid drops out.

This is also why an old school starter spins in the same direction, no 
matter what polarity you wire it.

Cheers,
Thomas

>  
> A permanent magnet motor will act as a generator if the starter  gear is 
> engaged with the engine and the engine is running. The power to the  small 
> terminal on the new starter motors must be interrupted when the ignition  key 
> is released from the START position or the generator action of the starter  
> motor can keep the starter engaged with the flywheel.
>  
> The flywheel will drive the starter motor armature at approximately  16X 
> the crankshaft RPM. If the armature power input to the starter motor is  
> connected to solenoid input to the starter motor the starter will try to  
> override the Bendix mechanism and your starter will have shorted, miserable  life.
>  
> SOBill  Taylor
> sobill at aol.com  
> 
> 
> 
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-- 
Real life:   Thomas Törnblom             Email:  Thomas.Tornblom at Hax.SE
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