Yes, Jim B contacted us to come up with a unit that could handle the weight
and more durable.
The late Ken Rose of San Antonio, TX Had been working on a design to
operate on lesser air pressure and still have the handling improvement of
the Harrison unit and full range of movement.
We purchased the rights and had Rick Flanagan Model the unit and made
several improvements and approved by Jim Bounds and distributed by Coop and
appliedgmcrv.com
On Sun, Dec 1, 2019 at 4:54 PM Ken Henderson via Gmclist <
> Rich,
>
> Leigh Harrison, now deceased, designed and sold the 4-bag system for many
> years; I installed mine at Jim Bounds' insistence in '98 or '99. There was
> one significant shortcoming to the system: It decreased the adjustment
> range of the suspension. Not enough that it's ever bothered me, but some
> it did. It also required more air pressure than the OEM system.
>
> A few years later, Jim B. was building a "car hauler" which was going to
> need more load carrying ability than the OEM or Harrison "4 Bag". So he
> adopted a different system, originally designed by a well-known GMCer in
> the mid-West whose name I can't recall at the moment. I think he bought
> the rights to the design, and perhaps made some modifications before
> beginning to produce and sell them, in cahoots with Jim K. Among the
> improvements made in that design was thicker, sturdier, 2-piece (easier to
> install & service) pedestals; bigger air bags; and, perhaps others I don't
> recall. To distinguish the system, they named it "Quad Bag". It had a
> large impact on Leigh's 4-bag sales and after his passing I don't think
> anyone picked up production.
>
> If you want more &/or more accurate information, you'll have to talk to Jim
> B. or Jim K.
>
> As for the 4 available bags, Bob D. acquired them in a parts trade and
> never had a need for them. They're readily available in the truck market,
> but not near his price.
>
> Ken H.
>
> On Sun, Dec 1, 2019 at 7:07 PM tonka6cuda6--- via Gmclist <
>
> > Dont know the back ground behind this and frankly dont want to
> > know....just thought it interesting that someone had a set of bags for
> sale
> > for a
> > system that seems to be used but not mentioned much.
> > --
> > Rich Mondor,
> >
> > Brockville, ON
> >
> > 77 Hughes 2600
> >
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk
http://www.appliedgmcrvparts.com
1-800-752-7502