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From: Bob Tilley <btilley@mchsi.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] Re: Off topic sort of
Date: Sun, 19 Jul 2009 23:04:02 -0400
References: <list-3765032@logan.com>

Folks,

I got a few minutes to take a quick look at the camper tonite before =20
it got dark.  I immediately noticed some burnt rubber and debris on =20
the face of the alt. As I looked closer, I also saw that the washer on =20=

the slide bolt was broken and half of it was missing. A quick check of =20=

the tension showed that it was way to loose and as I pulled on the =20
belt I could make it loosen up more. I pulled the bolt out and found =20
it to be the wrong type of bolt. It was a bolt you would use to secure =20=

fenders on the body of a car. The washer had points that would have =20
come in contact with the adjustment slide and cause to much torsion in =20=

the washer. When the washer snapped the bottom part fell out and not =20
enough pressure was left to keep the belt tight. The belt tension =20
backed off and wore down the belt. I located a proper bolt for the =20
slide, replaced the belt and all seems well. ;-) So hopefully this =20
problem was not related to the other belt problems my family had been =20=

experiencing. I weill follow up an email later if I don't have any =20
more problems.

Thanks for all the suggestions.
Bob Tilley
Albany, Ga


On Jul 19, 2009, at 7:44 PM, Dale Rogers wrote:

> Maybe this has been covered already and I just flat missed it, but ...
>
> It is absolutely essential that a V belt NOT bottom out on any of =20
> the pulleys. The service life of the belt will be dramatically =20
> shortened.
>
> Put a thin line of prussian blue at the very bottom of each pulley =20
> and install the belt.  Mark one pulley and the belt that touches it =20=

> with tire crayon (usually yellow).  Turn the engine enough to get =20
> one turn of the largest pulley, then pull the belt. If any part of =20
> the belt got blue on it, then that pulley is too wide.
>
> Dale R.
> COZY MkIV #0497
> Mesa, AZ
>
>
> Michael McMahon wrote:
>>
>> Me too! I have a 1984 Itasca with a Chevy 454 engine (I think) that =20=

>> started burning up belts. I was in the midst of having some other =20
>> work done at truck place since I didn=92t have the proper tools or =20=

>> time to lift the rig to changes tires etc=85  Took it back to them =20=

>> three times with busted belts, each time they told me something new =20=

>> they=92d tried.  I don=92t think we ever got to the bottom of it, we =20=

>> wound up buying a new RV around the same time.  But I=92m about to =20=

>> pull the old one out of mothballs and I=92ve been wondering what the =20=

>> belt problem could be or if it=92s finally fixed.  I=92m curious to =20=

>> hear your outcome.