| GMC Rear Opening Tailgate [message #154880] |
Fri, 30 December 2011 22:49  |
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John Heslinga
Messages: 632
Registered: February 2011
Location: Edmonton, Alberta, Canada
Karma: 4
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Hey Jay:
(and interested others)
How about this for your Trailer Hatch.
http://www.youtube.com/watch?v=rhwyuj1Vtog
Maybe you can get some detils from the video.
John and Cathie Heslinga
1974 Canyonlands 260
455, Manny tranny and 1 ton, 3:70 LS,
Red Seal Journeyman, DTE, BEd. MEd.
Edmonton, Alberta
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| Re: GMC Rear Opening Tailgate [message #154904 is a reply to message #154880] |
Sat, 31 December 2011 09:50  |
seven
Messages: 322
Registered: July 2008
Location: Calgary Canada
Karma: 0
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I have studied this video as well:
A couple problems I have to figure out on my Trailer project is the up swing the interior has at the back. Two options as I see it is to replace rear frame straight out or just cut middle braces out and have the floor drop down just behind the wheel wells? and then have the whole rear raise up. But the bumper will have to be delt with.
Still have to work this all out?
I still think the split idea is best.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=41954&title=gmc-trailer&cat=14
Jay Fox
Calgary AB
73 Painted Desert (Turtle)
78 Transmode (Trailer Donor)
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| Re: GMC Rear Opening Tailgate [message #154970 is a reply to message #154904] |
Sat, 31 December 2011 21:48 |
Don A
Messages: 895
Registered: October 2008
Location: Dallas, TX
Karma: 0
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<<< But the bumper will have to be delt with. >>>>
remember the tailgate from the movie where the bumper rolled down with tailgate. Maybe even hinge the tailgate from down at the bottom of the slant, let whole slanted floor swing down with bumper and tailgate?
Don Adams Dallas, TX
'76 26' Glenbrook, '90 Sidekick
rebuilt by R Archer, powered by J Bounds, Koba
[IMG]http://www.gmcmhphotos.com/photos/data/6109/G2.jpg[/IMG]
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| Re: GMC Rear Opening Tailgate [message #154976 is a reply to message #154904] |
Sat, 31 December 2011 23:03 |
Adrien G.
Messages: 474
Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
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Senior Member |
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Jay,
I think I would replace the diagonals with a bolt in cross member, to flatten (remove the kick up) the floor between the frame to the rear door. That is about the width of the rear fenders.
As for the bumper, make 2 bracket that fit under the kick up. Pivoted on the front and mount the bumper, so that the bumper can drop to the ground when the gate is opened (it could act as stabilizer). Some linear jacks (or ?)will be needed to operate the bumper, and further lock with 2 pins on the up position.
A thought for challenging project.
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
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| Re: GMC Rear Opening Tailgate [message #154986 is a reply to message #154904] |
Sun, 01 January 2012 06:17 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| seven wrote on Sat, 31 December 2011 07:50 |
... But the bumper will have to be delt with.
Still have to work this all out?
I still think the split idea is best. ...
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How much do you really need a bumper on the back of a trailer?
For the rear body kick-up, I have always thought a powered ramp (like on back of a C-130) would be interesting. More likely something for a rear loading COACH over a trailer.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: GMC Rear Opening Tailgate [message #155543 is a reply to message #154986] |
Thu, 05 January 2012 12:43 |
Larry C
Messages: 1168
Registered: July 2004
Location: NE Illinois by the Illino...
Karma: 0
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How much do you really need a bumper on the back of a trailer?
The GMC is not a trailer so there are bumper height laws and such.
the movie Stripes had the door and bumper hinge DOWN as a unit. I don't know if that is better than up for the door.
Is it possible to build up the bumper frame, with a heavy hinge or heavy pins though the frame that acts like a hinge?? Pulling an upper pin ( or lower pin depending on design ) on each side allows the bumper to tilt down.
Then you could pull a couple of heavy pins that hold it in the "up" position, pull the pins and it will tilt down out of the way?
The door would go up and the up ramp of the frame may help keep things inside???
Just a thought...
JAN 5
This computer-savvy generation, who dates by computer and fax out
for lunch, doesn't find the real world user-friendly. For all their technical skills, they have never filled an ice cube tray, never turned off a garage light, and never emptied a sweeper bag. It's as if they're sitting around waiting for the thing to be programmed so it can do it itself.
Erma Bombeck
Gatsbys' CRUISER  08-18-04
74 GLACIER X, 260/455-APC-4 Bagg'r
Remflex Manifold gaskets
CampGrounds needed, Add yours to "PLACES" />
http://www.gmceast.com/travel
_
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| GMC Rear Opening Tailgate [message #155904 is a reply to message #154880] |
Sun, 08 January 2012 09:57 |
seven
Messages: 322
Registered: July 2008
Location: Calgary Canada
Karma: 0
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Some more Homework from Byron, He has been like having a complete Engineering Department for my project!!!
The email and illustration he just sent over.
Jay,
This is the design concept based on my conversation with a GMC designer familiar with the proposed project for building a trailer. Such a project was never approved so we don’t know how the final engineer would have been done. Note that he suggested two possible method for reinforcing the lower half; either integrate it with a stiff plate or make a separate frame. Stiffeners will be required for the upper half to support the weight of the door in a raised position. He also said extending the floor and adding a piece to the lower gate shouldn’t be a problem. He did mention that something should be done to keep the position of of the opening constant since support members would be lost at the floor level. I’m sure you are aware of that challenge.
I hope this helps in giving you some ideas.
Byron
http://www.gmcmhphotos.com/photos/showphoto.php?photo=41976&title=gmc-trailer&cat=14
Jay Fox
Calgary AB
73 Painted Desert (Turtle)
78 Transmode (Trailer Donor)
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| Re: GMC Rear Opening Tailgate [message #155947 is a reply to message #155904] |
Sun, 08 January 2012 14:18 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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Byron does good work.
I like the plate installed inside the lower hatch. It being extended above the upper edge allows it to be lowered to the ground without damaging the fiberglass of the hatch.
If you keep the adjustable suspension you should be able to lower the rear of the trailer, reducing the angles at both the top and bottom of the ramp formed by this lower hatch/ramp. But it would also get the fiberglass closer to the ground... and possible damage.
This might be obvious but I'll say it anyway: To fasten the ramp/hatch frame to the trailer frame, it might be easier to think of the fiberglass part of the rear hatch as just a "skin" attached to the back of the ramp. IE: build the "flat' frame extension, ramp frame and inside plate. Get it all installed and working THEN attach the fiberglass.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] GMC Rear Opening Tailgate [message #156004 is a reply to message #155975] |
Sun, 08 January 2012 19:45 |
Larry
Messages: 2875
Registered: January 2004
Location: Menomonie, WI
Karma: 10
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Senior Member |
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| Robert Mueller wrote on Sun, 08 January 2012 17:35 |
G'day,
A while back I posted a message with a bunch of links to photos of Randy Johnson's mini transporter. I've tried to track him down
but I can't find any contact info for him.
Maybe someone who reads the GMCnet and has Randy's email address could forward him a copy of Jay's email and he could help him with
the engineering. Randy's been there and done that!
Regards,
Rob M.
-----Original Message-----
From: Jay Fox
Some more Homework from Byron, He has been like having a complete Engineering Department for my project!!!
The email and illustration he just sent over.
Jay,
This is the design concept based on my conversation with a GMC designer familiar with the proposed project for building a trailer.
Such a project was never approved so we don’t know how the final engineer would have been done. Note that he suggested two
possible method for reinforcing the lower half; either integrate it with a stiff plate or make a separate frame. Stiffeners will be
required for the upper half to support the weight of the door in a raised position. He also said extending the floor and adding a
piece to the lower gate shouldn’t be a problem. He did mention that something should be done to keep the position of of the
opening constant since support members would be lost at the floor level. I’m sure you are aware of that challenge.
I hope this helps in giving you some ideas.
Byron
http://www.gmcmhphotos.com/photos/showphoto.php?photo=41976&title=gmc-trailer&cat=14
--
Jay
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PM me for Randy Johnson's email address.
Larry 
78 Royale w/500 Caddy
Menomonie, WI.
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