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Tony,
Yes, I am looking for some larger pulleys for the ND alternators (anybody know a source for these). The water pump pulley only clears the e-shaft pulley by about 1/8", so in order to go with a larger wp plulley I would have to reduce the size of the e-shaft pulley too. I think the wp pulley will be ok as is, provided the high rpm doesn't cause cavitation. I really don't think that cavitation will be a problem, although I do have a 13B pump housing that was destroyed by cavitation. I suspect that may have been caused by air in the system. I'll have to inspect for that at regular intervals.
Mark S.
At 06:54 PM 5/7/2004 +0100, you wrote:
From: "Mark Steitle" <msteitle@mail.utexas.edu>
> Well, that's interesting. This reminds me of a nagging question I have
> had, but haven't asked.
>
> I was curious about the need to go to a smaller crank pulley to slow down
> the water pump and alternators.
> From memory, the crank pulley is about 5-1/2", the alternator pulleys are
> about 2-1/2", and the water pump
> pulley is about 4" diameter.
>
Hi Mark,
Just my two pennerth,
Surely in Ed's marginal slip situation most, or all, of the slip would take
place on
the smaller pulleys and the much greater load on the alternator would make
this
slip first i.e. before the WP. Also, just an idea, is there any merit in
using slightly
larger pulleys, not huge, same ratio but more bite and more forgiving of
wear/slack?
Just returned from hols, only 301 emails left to read, love it!!
Cheers,
Tony, Hebrides.
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