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Antique Engine Archives All archived posts from 1999 to 2004 when SmokStak was on EnginAds. This is a read-only board.

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bosch starter/generator


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Old 03-08-2004, 09:26:17 PM
chuck ore
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Default bosch starter/generator

Tring to get a Albin Marine engine to start the Bosch start/generator turns over really well,but you can stop it with your hand ( no power)It certainly won't start the engine it won't even roll the belt.Any ideas where to look for the problem? Thanks Chuck K.
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Old 03-09-2004, 11:06:49 AM
edurand
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Default Re: bosch starter/generator

Chuck:

If the Bosch starter/generator is anything like the old Delco units (teens Buick, etc.), they "motor" with very little power when the ignition is first turned on because the hookup is for generating. The front end of the starter/generator shaft was connected to a one way clutch that, in turn was connected to the timing gear train, letting the unit turn freely when "motoring".

When the starter pedal was pushed in; first, the starter gear was engaged (stalling the "motoring" generator). At the end of the pedal push, a ramp on the shaft lowered a big brush to the commutator that energized a heavy field winding and made the generator into a high torque motor for cranking.

When the pedal was released, the motor was turned back into a generator and the gear was disengaged, the generator now being turned through the one-way clutch from the timing gear train.

Then, there was the Dodge "Silent Starter", which was driven all the time from the timing chain. It both cranked and generated without the one-way clutch and operated kinda like the Delco unit.

Now, can I go back to sleep?

Take care - Elden




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