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Re: [GMCnet] New Owner Questions [message #320607 is a reply to message #320525]

Mon, 17 July 2017 17:54

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma:

Senior Member

G'day,

I contacted Dan Stuckey regarding this question as he manufactures new frames; below you will find his response published with his
permission.

QUOTE

Hi Rob

It's good to hear from you--hope you are well and prospering.

Re the frame, the traditional wisdom has been that you only jack a GMC up at the rear where the bogeys are attached. Lots of people
have used jacks on other places and you can easily tell that by the lower flange on the side rails being bent upward. The original
frames were mild steel .125" gauge and to be truthful (is there any other way?) I don't find much evidence that doing that has been
all that harmful--yeah, it looks bad but who sees it? I haven't had any of my clients tell me of results of jacking on any place
other than at the bogeys on my frames--I usually warn them to do any jacking only at the bogey brackets--but I would guess that
there wouldn't be much, if any, bending of the flanges if they jacked elsewhere--the rail material is visibly heavier stuff yet it
only adds a couple of hundred pounds to the total weight.

Frame rail set #39 just left my shop a couple of weeks ago. I have been using what we call in Canada a Class H steel that is heat
treated with about twice the tensile strength of the original spec and with a 50% heavier gauge at .188". All my most recent frames
have been galvanized with a process for the most extreme conditions--before that I sandblasted the brand new steel after all the
cutting, drilling, welding and then epoxy primed and painted everything. The galvanizing process is a little more expensive but
worth it, in my opinion. AMOF, I just took two front engine sub frames and one rear sub frame up to the galvanizer last Wed. The
engine sub frames are getting harder to find nowadays (I don't build them from scratch like the main frames) and I had to do some
metal surgery on them before galvanizing. With a fully galvanized frame--engine sub frame, mainframe, and rear sub frame, I think
you could leave your GMC with confidence to your great grandson in your will.

I hope this answers your question--it's probably more information than you wanted to hear.

On a personal note, I had back surgery in March and I'm not supposed to lift anything over 10 kilos--forever. How do you run a GMC
frame replacement business on that condition? The upshot of it all is that I have to get out of the business--know anyone who might
be interested? We're going to try and make it to the Elkhart International in Sept. and maybe make the GMC community aware of
what's happening on that account.

Best regards,

Dan

UNQUOTE

Regards,
Rob M.
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808

-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Johnny Bridges via Gmclist
Sent: Sunday, July 16, 2017 10:56 PM
To: gmclist@list.gmcnet.org
Cc: Johnny Bridges
Subject: Re: [GMCnet] New Owner Questions

"What we have here is a failure to communicate..." Or more correctly a difference in semantics. My take is the frame is obviously
adequate in that
the coaches have lasted this long. It is however much lighter than I'd like... it flexes and is easily bent. I am of the opinion
that GM chassis
engineers lightened it as much as possible. They were overloading the drive line roughly twice what it was originally intended fir
so they took out
what they could. I'd like to drive one of the reframed coaches to see how much a stiffer frame improves the handling, if any.

--johnny
--
76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
"I forgive them all, save those who hurt the dogs. They must answer to me in hell" - ol Andy, paraphrased

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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		Re: New Owner Questions By: JohnL455 on Sun, 16 July 2017 22:05
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