| [GMCnet] SOMETHING TO CONSIDER [message #105726] |
Thu, 11 November 2010 19:04  |
Charles Aulgur
Messages: 78
Registered: March 2006
Karma:
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On my trip home from the Las Vegas GMCWS rally, I lost the steel-
belt and all the tread rubber on one of my B. F. Goodrich tires on a
mid-axle wheel. It did absolutely no damage to anything and it did
not loose tire pressure. I was able to drive about three miles to
where there was an off-ramp to a safe place to change the tire. The
tire was 8 years old and should have been replaced but I failed to
keep a close watch on my maintenance records. I didn't thing they
were over 4 years old. How time flays when one gets older.
The reason for this post is that I had similar failures on some
Michelin tires about 12 years ago and it did over $2K total damage
to my coach on both rear sides. One major difference is that I now
have the Quad Bag system and their frame provides a lot of
protection. However, I believe the like of damage is because the
tire failure occurred on the driver's side where I have an electric
applied parking brake with swing arms mounted on the outer Quad Bag
frame. When the parking brake is applied a scissors jack type action
moves a 4" square pad out against the two opposite rear tires to lock
them together. When these parking pads are in the "off" position
they are about 1" from the center of the tires and they can pivot to
mate with the tire surface. What I believe happened is when the
tread and steel belt broke, they caught on the parking brake pad for
the mid wheel and pealed all the rubber off the tire carcass which
prevented the loose steel belt and tread from flopping around in the
wheel well and do all the damage previously caused under similar
conditions. If you want to view my parking brake unit you can go to
the GMC photo site and search for username "chuckieboy". I don't
post a URL because in the past your PCs don't understand my Mac and I
don't know how to correctly do it.
What I plan on doing is mounting something on the passenger side rear
wheels that simulate the parking brake pads.
Chuck Aulgur
La Mesa, CA
76 Royale still with great brakes
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