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clare at snyder.on.ca wrote:
> On 23 Jul 2006 21:21:19 -0700, "abripl" <ignord_eml@hotmail.com>
> wrote:
>
>
>>One known problem is that aircraft engines turn CCW looking at the prop
>>but auto alternators have cooling fins optimized for CW. But thats not
>>apparently as much a problem as the pulley nut potentially comming
>>loose. For CW rotation the engine torque will tend to tighten the
>>pulley nut but for CCW it will tend to loosen it. It happened to me
>>today )on the ground) after 60 hours of use and the alternator was not
>>charging just spinning the pulley. Make sure you check your pulley nut
>>tightness ocassionally if you are using an auto alternator.
>
>
>
> Are you telling me that all the aircraft versions of alternators have
> left hand threads? Or even that alternators on engines that run
> "backwards" or have the alternator on the back of the engine(like on a
> Renault R12) have left hand threaded rotors?
> I am afraid I would have to dissagree. Not ALL do. Perhaps SOME.
> On counter-rotating marine engines, both alternators are the same.
Corvairs do--both the old generators and the newer alternators. some
loc-tite goes a Loong way in these situations..Jerry
>
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Re: Problem with auto alternators
