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Re: 5000 brake booster (servo)
>> Before I rebuilt mine, I considered getting
>> an ELECTRICAL 12 VOLT PUMP, with a cutoff switch and a pressure
>> accumulator. It would take the constant one or two horsepower
>> load off the engine and put it onto the battery. This pump would
From my experiences with Audi Electricals, I would be very *very VERY *VERY*
hesitant to put any more load on the factory electrics, especially one that
rates in the horsepower units (as I recall, dimly, 1 HP = 746 WATTs which
will draw around **60** amps at 12 volts! Thats 100% efficiency, so factor
in electric motor losage and you are talking three digits (**100** amps!)
as the starting point for your pump. Just lugging enough heavy-gauge wire
around to hook up your pump may well cost you more hp than you save by off-
loading the engine...(not to mention the extra alternator or two needed to
drive the extra electrical load! or coupla hundred ft**2 of solar panel!).
It's actually 736 W/HP.
I don't think the electrical issue is such a big deal. The radiator
fan on my '90 100tq with ECC is rated at 700 W. The alternator is a
beast rated at 120A.