| [GMCnet] Converting OEM Rear Brakes to 3" Wide Shoes [message #60789] |
Tue, 20 October 2009 09:38  |
fbhtxak
Messages: 191
Registered: April 2006
Karma:
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Senior Member |
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Thanks, Jim -
If the trailing rear wheels can be equipped with a parking brake that works,
I would be interested in retrofitting those with disks also - including
Chuck's "reaction arm". I do not use the transmission park sprag as a
"parking brake".
Fred Hudspeth
'78 Royale - Tyler, TX
'82 Airstream Excella 28'Motorhome, Anchorage, AK
Date: Mon, 19 Oct 2009 20:14:55 -0700
From: Jim Kanomata <jimkanomata@gmail.com>
Subject: Re: [GMCnet] Converting OEM Rear Brakes to 3" Wide Shoes
To: gmclist@temp.gmcnet.org
Message-ID:
<91dae4970910192014u27654665y485919490858a0d9@mail.gmail.com>
Content-Type: text/plain; charset=UTF-8
Fred,
By going with a drum in the rear back , your defeating the full advantage of
the disc. system.
I have been working with few people in perfecting the caliper parking unit
like the one on the Eldorado rear disc. system. I know that if we went with
all 4 rear parking calipers, it would work, but will not have the full
advantage of the 80mm.
The limiting factor in the rear parking caliper is the lack of enough force
needed to lock the pads.
We have been using Albert Branscom's cable system, but that is another $500
that we do not want to involve.
We are going to look at a foot operated system as we need more force.
I'm going to have Chuck Augur work on it to see .
On Mon, Oct 19, 2009 at 7:25 AM, Fred Hudspeth <fbhtxak@sbcglobal.net>
wrote:
> Thanks to all who commented, both on this forum and privately, on this
> subject. My objective in using the wider shoes was to reduce brake
> fade under emergency stop conditions on steep mountain grades ?Theory
> notwithstanding, actual experience by those who have installed wider
> shoes is that there is no discernable improvement under those
> conditions(except for this situation, the OEM brakes are adequate for
> the way I operate the vehicle).
>
> On to a disk brake retrofit, at least on the leading rear wheels...
> 'Knew that would work but installing wider shoes was a more expedient
solution.
>
> ?As Packard enthusiast Dave Greenberg remembers, the old Packard Motor
> Car Company promoted the sale of Packards with "Ask the man who owns one".
> 'Could be modified for GMCMh owners to "Ask the man who has done that".
>
> ?Fred Hudspeth
> '78 Royale - Tyler, TX
> '82 Airstream Excella 28'Motorhome, Anchorage, AK
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