<VV> MY ALTERNATOR CONVERSIONS

[jvhroberts at aol.com]

 It's not so much 'it ain't broke', but there's often a better way. Especially in this case where you're going to add a lot more amps, etc. 

Now, in reality, alternators trade torque for RPM, so, lots of torque when turning slowly, and the fan makes more torque when revved. 

Still, seems like a separate belt is a good idea here. 

 

John Roberts
 

 

-----Original Message-----
From: Tony Underwood <tony.underwood at cox.net>
To: virtualvairs at corvair.org
Sent: Sat, Jul 31, 2010 12:45 pm
Subject: Re: <VV> MY ALTERNATOR CONVERSIONS


At 05:15 PM 7/29/2010, corvairs at pacifier.com wrote:

>   Well, belt life suffering is the effect. The cause is slippage, which

>is, I would think, much greater than simply running the engine at 4800

>rpms (which by the way would be pretty severe engine use)







I sometimes wonder why more people haven't simply added an AC or smog 

pump pulley to the crank and used it along with a home brew bracket 

to drive an alternator via a 2nd belt, while adding another idler 

pulley for the standard fan belt to run the fan.





Removing the alternator/generator load from the fan's drive belt 

would go a LONG way towards extending belt life along with making it 

a lot less likely to toss a belt.    Be sure to use a smog/AC motor 

mount bracket.





People modify 'Vairs in many different ways to improve things... 

seems somebody would have done this along the way.   If I had access 

to a machine shop to fabricate brackets I would have... but then I 

don't drive as aggressively as I used to (aversion to tickets) so I 

usually don't toss belts these days.



I know, if it works don't fix it.   But it would be kinda handy at 

the autocross to help keep the belt on the engine.   I've seen more 

than one autocrosser/racer with no alternator on it at all, just a 

2nd idler pulley to route the belt.   ...and no spring loaded idler anywhere.









tony.. 

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