[PUP] Energy resource management

[2elnav at netbistro.com]

> Can you drive the 300a model off a single belt? Not sure what my
> current drive belt is called, but its an inch or so wide. If so, it
> might be possible to replace my current Leece-Neville 170A model with
> the 300A. Tks for heads up on the spec sheet. I'm guessing a used unit
> might be floating around out there somewhere.
>
> John

REPLY - off list
These require twin Vee belts or a 10 rib serpentine belt.
a pulley profile chart is also availabel on the Prestolite website.
The surplus units I am referring to are now in the Bellingham WA area. We
got them in new condition still in the original shipping crate.

Mounting is slightly different than what you might be accustomed to. The
mount is a saddle, not your conventional J-180 mount. Last time I looked 
all relevant data sheets  including  mechanical mounting dimensions was
stil on the Prestolite website.
These units were originally intended for locomotive use and were designed
with an end bell having a 3" duct collar for cooling air to be ducted in
from a blower.  The highway coach industry  also picked up  on these.
There is a technical note on the Prestolite website dealing with how to
convert a D-50  oil cooled alternator to one of these air cooled units. On
the busses the alternator is mounted on a PTO shaft in the transmission 
and this is also a very dirty area subject to road dirt and flying water
and road salt.
Here again the ducted cooling air is a great way to keep the dirt out of
the alternator. For marine use you can also just dispense with the end
bell and just mount a screen to keep anything from contacting the wire
termination on the diode block.

For USCG use these were de-rated to 200 amps continuous use. The 300 amp
rating is good for about 5 hours running time at maximum amperage.

Cheers
Arild