<VV> Thrown Belt

[Hugo Miller]

That is not quite correct - the torque converter performs a large
part of the variable transmission. Without it you'd have a massive jolt
from low to high and vice versa - the torque converter bridges the gap
in ratios. 

On 13.10.2024 05:58, corvairduval via VirtualVairs wrote:


> Hey Tony, all Corvairs have a gear box, no Dynaflows in our cars! 
>
Just some are cushioned with a torque converter....
> Take care,
> Frank
DuVal
> On Friday, October 11, 2024 at 06:24:00 PM EDT, corvairduval via
VirtualVairs <virtualvairs at corvair.org> wrote: 
> 
> I see you have not
heard of the problem with Clark's C5790 belts. Drove me nuts for years
trying to find why I kept shredding belts. I sandblasted all the
pulleys, changed belts (but always used the C5790s I had on hand) but
the problem continued. 
> 
> On the forums I found people talking about
the issue and the common denominator was C5790! All the people using
other belts had no issues. They were using mostly the industrial size
3V560. Available from Gates and other manufacturers. Supposedly Clarks
has changed suppliers. I'm buying 3V560 now. They are wrapped, and thin
enough to fit deep in the pulleys, just like the original GM belts!
>
And yes, you should be able to just turn the alternator (generator)
pulley with the belt properly tensioned. Over tensioned will wear the
fan, alternator and idler bearings. 
> Frank DuVal
> On Wednesday,
October 9, 2024 at 03:18:46 PM EDT, Steven J. Serenska via VirtualVairs
<virtualvairs at corvair.org> wrote: 
> 
> Here's my contribution to
traffic.
> 
> I had work done recently on my 1965 Monza 110/4spd. While
the shop was 
> doing other things, I asked them to replace the fan
belt.
> 
> After i got it back, I drove the car for a few weeks with no
issues. 
> Then, during 70-80mph drive home, it threw the belt and I had
to pull 
> over. I didn't have the right tools in the car, so I got a
tow home.
> 
> I replaced the belt myself using that handy bent wrench
that Clark's 
> sells. I had read on a forum somewhere that, when the
belt is 
> appropriately tensioned, you should just be able to turn the
alternator 
> with a single finger. I bought a replacement belt and
tightened it to 
> that level and was on my way.
> 
> I took it on
another high-speed drive this past weekend of about 60 
> miles each
way. When I arrived at my destination, I could hear 
> something
squealing and opened the engine compartment and checked. The 
> fanbelt
hadn't been thrown but it was loose and slipping. After 
> everything
cooled down (about an hour), I checked and the tensioner was 
> still
firmly bolted into place exactly as I had left it. My only 
> conclusion
was that the belt had somehow expanded although that didn't 
> somehow
seem right. I loosened and moved the tensioner, tightened 
> everything
up, and drove home.
> 
> When I got home, there were no noises but I
checked the belt anyway. It 
> was loose again.
> 
> I got a steel rod
and was able to use it to pull the tensioner back. 
> The belt was
tighter than I had gotten it in the past but I could still 
> turn the
alternator. When I backed into the garage, the car began 
> making a
whirring noise, not unlike the noise of the flying car in the 
> Jetsons
cartoon. I read somewhere that the whirring could be coming 
> from the
alternator due to an overtightened belt.
> 
> I suppose my next task is
to loosen it a bit but I'm afraid of taking 
> another long, highway
speed drive and having another issue.
> 
> What other things should I do
or check out? The belt that's on there 
> now was purchased a few years
ago from Clark's.
> 
> Thanks in advance for your help.
> 
> Steven J.
Serenska
> Bristol, RI
> 
>
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