I use the GEO alt and an advantage with it is that if
you kill power
to the exciter lead it will stop the power output so you
can shut it
down in the event of a voltage overrun.
Ken
Welter
East Coast confirmed
that the UltraMini works like that as well. After seeing Mark's
message, I called around, but the cheapest I could get one was $135 + $35
core, and that was for a rebuilt unit. I just went ahead and ordered a
new alt from East Coast for $219.
Now, the problem
will be coming up with a double pulley. They said the shaft was 15mm,
and the normal size was 17mm, so finding a double pulley might be
tricky. If I can't make one work, then I'll have to consider
using just a single V belt, or trying to convert to a serpentine
belt. On one hand, a dual belt seems like it would be twice as
likely to keep the water pump running, but in reality, it's not.
If the outer belt comes off, the inner could remain, but if the inner comes
off, the outer belt will go with it. It's tough to say if it really
offers any redundancy, but it does offer more contact area on the water pump
pulley, which has a terrible geometry already.
Cheers,
Rusty
Rusty, for what is worth - you know - my usual 0.02
worth.
I previously ran two belts to alternator and
water pump. Once I added the smog pump for a vacuum source, the
geometry forced me to either give up dual belts on the water pump OR the
alternator. I figure I wanted the water pump working more than the
alternator. So only one belt on the alternator. I do use top
quality Gates belts as I found that some of the off brand automobile belts
would shread in a short amount of time. I came back from one long
flight with half of the "cogs" missing from one such, so the belt was
clearly on the verge of failure.
Ed