<VV> HiPo Alternators

Ron ronh at owt.com
Thu Dec 29 13:39:23 EST 2005


A very good summary, as I understand it.
RonH

----- Original Message ----- 
From: "Padgett" <pp2 at 6007.us>
To: <virtualvairs at corvair.org>
Sent: Thursday, December 29, 2005 6:39 AM
Subject: <VV> HiPo Alternators


> So the bottom line seems to be that a 55 or 63 amp alternator will work 
> fine on a Corvair and there will be no fan belt issues so long as you 
> never try to pull more than about 45 amps. Further the stock "rule of 
> thumb" for tightening the fan belt only enough to  be able to turn  the 
> fan with one finger will limit the available power to about this level. 
> Tightening the fan belt further to reduce slip can give more power but at 
> a cost in fan belt and bearing life.
>
> However this is sufficient for a stock Corvair since the stock load is 
> generally much less unless everything (heater, headlights, wipers,..) are 
> on at the same time or if higher power accessories (stereos, driving 
> lights, neon systems) are installed in which case energy management is 
> advised.
>
> I suspect that a spring loaded idler pulley might extend this a bit. 
> However it is likely that to get more than 60 amps reliably would require 
> a second idler and to mount the alternator like an AIR pump with its own 
> fan belt which would also require rotation of the oil filter.
>
> Padgett
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