[6pack] AC Pulley-Overdrive controller

[michael lunsford]

I thought I would share my response to Vance's offer to help with the list in
case someone else has some ideas.
Vance,
 
Sorry I don't have any photos and since I'm somewhat photographically
challenged when it comes to donloading to a computer I doubt I'll take any. 
However, in a nut shell here is the problem: 
An original V belt does not take kindly to regularly flexing to the outside as
well as the inside of the V.  The setup my dreamer AC guy came up with
involves one longer belt and two smooth, not V, idler pulleys.  One of these
is necessary to keep the V belt from rubbing against the frame where the
radiator brace on the passenger side bolts to the cross brace.  The second
idler is between the water pump and the alternator and is necessary in order
to provide enough belt surface for the V belt to drive the water pump on that
side.  Both pulleys are smooth and thus put pressure  on the back of the belt
(outside) which is opposite of the V or working side of the belt.  This
results in the belt flexing both ways.  The V belt is basically too thick to
flex both ways and thus the belt rapidly delaminates from the V side.
 
I have considered using a V type idler but it looks like I would need at least
3 idlers and I'm not even sure that would be enough, that I would have enough
room under the hood or that it wouldn't just be easier to use the stock AC
setup.  It's amazing what problems we create for ourselves.  Oh well, back to
the car to see why fuses are blowing after I dropped the inside AC condenser
to install the overdrive controller.  That works fine by the way.
 
Mike Lunsford 1970 TR6 With AC-sort of