Hidden hinges single reardoor....

Major projects, rebuilds and overhauls covering multiple areas
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Munken
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Hidden hinges single reardoor....

Post by Munken »

Finally some construction pix. I did some bodywork on the "Gray" before I joined AstroSafariVans, So lets take it from the beginning.

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Okey..okey....... maybe not that far back... 8-[

What I have done before the AstroSafariVans is. I have replaced the very rusty rockerpanels with "home made" ones.
Then I replaced all door skins, also "home made", mostly to get rid of the handles. Replaced the front window frame, it was alot of rust there too.
Now I got an idea to make the rear doors to one door that opens upwards with hidden hinges.
That is what this first building post will show.

Here are a few pices of steel, to fabricate the hinges.

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The loops are welded on.

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And tested in the van.

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Pieces that will enhance the door frame and the portion of the hinge that will be sitting there.

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Hole to make room for the nuts.

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Welding and grinding.

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Welded hinge parts together and some reinforcements. Better safe than sorry.

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To fix the doors, I welded two plates on the inside and two on the outside.

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The ugly hinges are gone, cut them a bit rough just to make it possible to open the door. I remove the rest later.

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First test opening.

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The hinge in action.

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Good clearance between the door and the roof.

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After much measuring and testing (seven different locations), the gassprings are in place. They have a pressure of 630N each.

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And with the door closed.

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Function test, I open the door about 6-8 ", then it slowly goes up by itself.

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That's what I've done so far. The next step is to replace the door skin to a large one, without windows.

To be continued..................
Last edited by Munken on Sat Sep 11, 2010 10:50 am, edited 1 time in total.

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Re: Hidden hinges single reardoor....

Post by astrozam »

Very cool... :cheers:
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Re: Hidden hinges single reardoor....

Post by mdmead »

I'm not sure what to say but.... WOW!!

That is amazing!
Matt
Selah, WA
-96 GMC Safari AWD Hi-Top Conversion -->Stalled 5.3L swap & 5" lift
-74 Ford Bronco -->Far from perfect but mine!
-99 V-10 Ford Super Duty Super Cab 4x4 -->Stock with 285 Cooper ATs
-00 Ford Focus Wagon -->The Red Turd
-95 Ford 24' Class C Motorhome -->My big block sleeper
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No new projects until the current ones are done!

lockdoc
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Re: Hidden hinges single reardoor....

Post by lockdoc »

I am totally impressed. That is a well thought out, awesome project!
Current:
01 AWD - Stock
98 AWD - Stock
Past:
93 4WD - 305 V8 - 5" lift - 31" tires
98 4WD DHC - 10" lift - 33" tires - Onboard air and Hydraulics - Snowplow
92 RWD - 350 V8 - lowered - 97 front clip
92 RWD - 350 V8 - converted to AWD - V6
91 AWD - 350 V8 - conversion van
94 RWD - 350 V8 - sons van
92 RWD - stock - sons van
93 RWD Shorty - project
89 RWD Shorty - parts van

LiftedAWDAstro
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Re: Hidden hinges single reardoor....

Post by LiftedAWDAstro »

I'm with Bill...AWESOME! =D>
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition

Mileage spreadsheet

Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
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Re: Hidden hinges single reardoor....

Post by Smiliesafari »

I agree with everyone. This is custom fabrication at it's best.
1996 Safari SLX Hotair balloon transport vehicle

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Re: Hidden hinges single reardoor....

Post by Cobra »

that is truly another impressive mod
1998 GMC Safari AWD, BFGoodrich AllTerrain T/A
Jet performance tuner 91 octane preset, Jet under-drive pulleys
Rancho 999000 series shock, on-board controller to be installed later
DHC rock rails and skid plate Add-A-Leaf
G3500 front calipers
Zexel Torsen Diff
11" drums
180 amp Alternator
Long tru-cool 4590 trans cooler

1997 gone
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GnarliSafari
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Re: Hidden hinges single reardoor....

Post by GnarliSafari »

all i an say is wow! those hinges are artwork all there own! my vote for best fabricator on this board!
99 SLT Safari AWD, G80/GT4 rear, Burgundy, 196,000 and counting (strictly AMSOIL) flowmaster 40series muffler no more cat, K&N Kone Filter, roll pan, 255/60/15 rubbers mounted to 15x8.5 inch American Racing Tailgunner wheels, billet grille, CB Radio, Alpine Deck, Shag carpet, the list goes on....
03 Chevy Silverado 2500HD, LB7 Duramax Diesel, 5 speed Allison Tranny, Crew Cab Long Bed, no muffler or cat, 4 inch turbo back and side piped. not too many other mods yet, also addicted to AMSOIL.
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Re: Hidden hinges single reardoor....

Post by SoCalli V8 »

Awesome pictures Dude, how did you calculate all the bends and the fabrication with your hinges? I went though soo many design fabrications of hinges when I was working on my gullwing slider, because it ain`t easy.

Do you have a mechanical engineer working with you? If so that`s cheating! haha! ( Because I had to figure out all this ch1t by myself )

I Love your updates, and I get all your emails, Thanks Dude.
`86 V8 Lowered Cargo, extensively modified, shaved bald, wearing the shortest, sluttyest white primer dress....

A British Wanker living in So KarlyFornia.
My Astro tows my toys to Glamis sand dunes http://www.youtube.com/watch?v=jp2pqjQtpso
First ever canal jump at Glamis http://www.youtube.com/watch?v=oXZjM84x_Xc
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Munken
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Re: Hidden hinges single reardoor....

Post by Munken »

Thanks guys. No cheating here, no one work with me, not even a friend to keep the door up when I mounted the gas springs.

There was a lot of calculations, Mostly bent welding rods to find the best place to mount the hinges. The hinges was easy, the gas springs was worse, seven different locations before I was satisfied.

Check this video:
Astro door vid

LiftedAWDAstro
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Re: Hidden hinges single reardoor....

Post by LiftedAWDAstro »

Man that is smooth! I assume you are going to sell kits...right? :poke: :muhaha:
Current rides:
2013 Toyota Tundra DC 4x4
2008 Dodge Nitro 4x4
2005 Nissan Sentra 1.8S Special Edition

Mileage spreadsheet

Vans owned:
1986 Safari 2.5L 4 speed manual - scrapped
1995 Astro 2WD conversion 4.11 posi, shift kit, DHC rock rails - sold to Skippy
1998 Astro 4x4 D44, D60, NP231, full hydraulic system with 9k# Milemarker winch and snow plow - sold to Lockdoc
2003 Astro AWD all stock - traded for a 3/4 ton truck
2005 AWD, 4.10's - sold to skippy
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Munken
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Re: Hidden hinges single reardoor....

Post by Munken »

I'm pretty busy with work and the Astro. If I get time, maybe. :)

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Re: Hidden hinges single reardoor....

Post by Cobra »

that's is a kit i can see a couple people buying for sure
1998 GMC Safari AWD, BFGoodrich AllTerrain T/A
Jet performance tuner 91 octane preset, Jet under-drive pulleys
Rancho 999000 series shock, on-board controller to be installed later
DHC rock rails and skid plate Add-A-Leaf
G3500 front calipers
Zexel Torsen Diff
11" drums
180 amp Alternator
Long tru-cool 4590 trans cooler

1997 gone

draggnastro
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Re: Hidden hinges single reardoor....

Post by draggnastro »

if you do decide to make kits to sell hit me up i need 2 of em!
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Munken
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Re: Hidden hinges single reardoor....

Post by Munken »

Some measures.

The hinge is bolted in the reinforcement plate for the rear belt, (there was already a bolt and a nut there), with the hingeaxel as close to the roof as possible (see 3rd hinge pic). That make the door go up over the roof. If you mount it lower, the door will go forward in to the roof before it lift and go over it.

Here are some measures

The loop is 30mm long 20mm in diameter and the hole is 12mm.

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This is how I mounted the gas spring. The red line is from the hinge axel to the lower point of the spring. If you get the upper spring point to close to the "line" you lose the pressur and the door will slam when you close it. To far away, you have the door in your teeth when you open it. How close/far from the "line" also depends on what pressure the gas springs you are using has, I use 630N each. I mounted them 75 mm from the door frame. We'll see if it is enough or if I have to mount stronger springs when the door is finished.

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