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<clare at snyder.on.ca> wrote in message
news:vvlcc2hroq91p0som0ebevjin72dn3a9ln@4ax.com...
> On Mon, 24 Jul 2006 21:42:43 GMT, jerry wass <wassbiplane@tds.net>
> wrote:
>
> >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
>
> Corvair has left hand thread on alternator????? None that I have seen,
> and the manual does not mention it - and the rotor is the same as any
> other Delcotron.
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>
I really doubt that there were any left hand threads on small alternators,
but there were a number of auto engines that rotated in the opposite
direction. IIRC rear drive Chryslers used to rotate backward of GM, and I
believe that Honda currently rotates the reverse of most other front drives
due to the reversed position of the engine and drive train.
I hope this helps. It should at least net an appropriate fan.
Peter
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Re: Problem with auto alternators
