RV: 1973 GMC Project Coach- AZ

[Road taco]

I almost bought one from a friend, and changed my mind because I did see
some major expenditures. He had found a design problem in the dash A/C
and heat ducts. The fan would start before the duct could open, which
would hold the duct partially or completely closed. He had to reverse
the process that the duct would open, then the fan engaged. He also told
me that due to the tandem axle configuration that, when going over a
large bump or uneven ground could cause most to the vehicle weight to
rest on one tire, resulting in failure. He ran very heavy duty radials.

[Will]

On Fri, 06 Jun 2008 16:14:52 -0700, Road taco <thebeanery@mojado.com>
wrote:

> . . . . He also told
>me that due to the tandem axle configuration that, when going over a
>large bump or uneven ground could cause most to the vehicle weight to
>rest on one tire, resulting in failure. He ran very heavy duty radials.

Nonsense. If that were a real problem, we'd see failures daily on
chassis running duals!

BTW, with '73-'76 GMC, you dare not run radials on the OEM wheels.
Reason: radial tires exert more stress on the wheel rim, leading to
fatigue cracking.

BTDT

Will - The self-appointed Curmudgeon of Sill Hill

[RAM³]

Will <will@epix.net> wrote in news:4g3l44hs504ubjro5ulvmkgc15f8m04vo9@
********:

> On Fri, 06 Jun 2008 16:14:52 -0700, Road taco <thebeanery@mojado.com>
> wrote:
>
>> . . . . He also told
>>me that due to the tandem axle configuration that, when going over a
>>large bump or uneven ground could cause most to the vehicle weight to
>>rest on one tire, resulting in failure. He ran very heavy duty radials.
>
> Nonsense. If that were a real problem, we'd see failures daily on
> chassis running duals!
>
> BTW, with '73-'76 GMC, you dare not run radials on the OEM wheels.
> Reason: radial tires exert more stress on the wheel rim, leading to
> fatigue cracking.
>
> BTDT
>
> Will - The self-appointed Curmudgeon of Sill Hill
>
>

Apparently he hasn't studied the geometry of dual axle suspensions. <g>

Most tandem-equipped RVs have an equalizer link to keep the majority of the
weight upon *both* axles/wheels, even when one is jacked up in order to
change tires.

Isn't it wonderful when people talk through their hats? <G>