<VV> High Capacity Alternators

[Jim Davis]

Come by anytime and I start the UltraVan and I turn on the Sharp 
microwave -  985 watts or 80 amps out of the alternator through the 
Xantrex inverter to the microwave.   I have a clamp on ammeter that 
reads to 300 amps. That we can put on the 4 ga alternator lead (150 amp 
fuse).  I can turn the headlights and load another 11 amps to the 
alternator. The voltage will drop to 13.6 volts but the belt doesn't 
ship.  Of course you have to have the engine above 3,500 rpm.    For 
those that are curious, I change belts every year, but they do last at 
least 12,000 miles.   Kneeling over a hot Corvair engine to change a 
belt alongside the Interstate is not my idea of fun.
Jim Davis



  On 11/4/2015 9:33 PM, Ron Hinz via VirtualVairs wrote:
> Has anyone ever seen an alternator on a Corvair pull anything like 100 
> amps? I'm skeptical if anyone ever has because the only instrumented 
> test that I've ever heard of was run on an Ultravan by the Ultravan 
> club and their result was that with a properly adjusted belt, 50 amps 
> was about all you were ever going to get before the belt starts 
> slipping.  That limitation comes from the 1/4 wrap on the pulley and 
> it's a design limitation. People can claim anything but it's the 
> measured numbers that are meaningful.
> Ron Hinz
>
> -----Original Message----- From: Jim Davis via VirtualVairs
> Sent: Wednesday, November 4, 2015 5:16 PM
> To: virtualvairs at corvair.org
> Subject: Re:  High Capacity Alternators
>
> If you had a Corvair powered UltraVan, you would understand the need for
> a 140 amp alternator.  The frig and ice maker alone draw 60 amps.
> Jim Davis
>
>
>  On 11/4/2015 7:04 PM, hallgrenn via VirtualVairs wrote:
>>      ,,,,,Unless you've got a car amp/speaker setup designed to rock 
>> the world why would you need an alternator with more than 70 to 80 
>> amps common to GM cars of the 70s.  Larger capacity also means more 
>> load on the engine when charging.
>> Bob Hall
>>
>>
>> Sent on the new Sprint Network from my Samsung Galaxy S®4
>>
>> -------- Original message --------
>> From: Frank DuVal via VirtualVairs <virtualvairs at corvair.org>
>> Date: 11/04/2015  7:22 PM  (GMT-05:00)
>> To: virtualvairs at corvair.org
>> Subject: Re:  Autozone alternators
>>
>> Quadruple? You might be overstating your case. Double I would believe.
>> Stock: 37 amp
>> Double: 74 amp
>> Quadruple: 148 amp
>>
>> Not many 70s/80s Chevys had 150 amp alternators.
>>
>> Frank Duvall
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