Pictoral differences found on G4112 vs G506 (more images)

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forestry4evr
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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Fri Oct 23, 2015 4:37 pm

40 Chevy wrote:Paul;
Just wondering, is thata cargo bed that someone put on a cargo. and made it a cargo dump, if not, the early beds were definately 'Beefier".

John G
Both beds have the original Hercules data plates on the bed and hoist frame. They are the real deal. The early beds are just way more stout in metal gauge...she's a brick house.

Paul
1941 G4112 Chevrolet with Hercules dump bed


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Re: Pictoral differences found on G4112 vs G506 (more images

Post by D.R.H. » Mon Oct 26, 2015 8:57 pm

Did the early dump bed have a smaller cubic capacity to prevent the hoist from being overloaded? Take a look at the outside 'step' area in Paul's photo, I do see a difference there.
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Re: Pictoral differences found on G4112 vs G506 (more images

Post by 42cargo » Tue Oct 27, 2015 1:58 pm

Dave,

I don't have my truck any more, so I can't measure to be 100 percent sure, but when I had both an original cargo bed and an original dump bed at the same time, I recall that the measurements were the same on the top side. The difference you see in the outer step on Paul's two trucks reflects the evolution of the design over the course of the first couple of years.

John

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by 40 Chevy » Tue Oct 27, 2015 4:34 pm

A cargo tailgate is wider than a cargo dump tailgate.

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Wed Oct 28, 2015 3:28 am

D.R.H. wrote:The correct dump beds had a slightly smaller cubic dimension. This was to prevent prevent the hoist from being overloaded. Take a look at the outside 'step' area in Paul's photo. The difference can be seen there.
The early dump beds on the g4112's (left side in my photo) were apparently overbuilt as they were replaced with a much lighter construction on g506's (right side in photo) less than a year after initial production. Yes the "steps" or "walkways" were designed so that the truck could carry a smaller volume to lessen the chances of overloading. Cargo beds on Chevys have the same "steps" so it is not just a dump body thing. Body interior/exterior measurements for early-late-dump-cargo configurations vary only nominally.

The "steps" on the sides are actually a PITA as they are real attractive flat spots to place items like cameras, sunglasses, tape measures, cold beverages... One has to remember to do a walk around looking for junk on the steps before driving.

Also, if the dumpers were used to carry gravel or rocks, they were still considerably overloaded. Have you ever gone to the gravel quarry with a modern pickup? Six inches of gravel spread out in the bed will weigh a ton and squat down a half ton pickup considerably.

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by cooler king » Wed Oct 28, 2015 9:02 am

I am curious about the model number on the data plate of the wide skirted bed ?I know the bed on the right is a Hurcules D12S2. Yes it does not take much to over load one of these trucks.Here are some weights of some common materials
lbs ,per cubic yard
gravel (dry)3100
(wet)3400
earth (loose)2000
(packed)2700
(packed-wet)3400
Sand (dry) 2850
(wet)3400
stone (crushed) 3000
snow (wet) 1100

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Sat Jan 02, 2016 3:52 am

Found another little difference between early and late trucks. While replacing the pinion seal on a 10/42 rear axle, I noticed that the felt outer wiper was different than others I had seen. After a good soaking in kerosene and brushed clean, the difference became apparent.

Image

Notice that this wiper has a cork outer diameter and a felt inner diameter versus 100% felt construction on early models. Is this a shortage issue where materials were more limiting (late 1942 was a pretty scary time for the US and the allied forces) or did the cork do a better job holding the wiper to the yoke flange?
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images

Post by forestry4evr » Sun Mar 26, 2017 4:41 am

Came across some more differences, this time in the Hercules dump bed front cushion where the bed is cradled to the frame. Both examples are from Hercules manufactured beds, one on a 2/41 DoD g4112 and the other on a 6/42 DoD g506.

Image
Front cushion on g4112. Note there is a one piece cushion frame that extends to both frame rails. The wood contact point is along the entire frame on the 2/41 YP model.

Image
Same front cushion pad on a g506. Notice how much less materials were used on this version, but the assembly has many more pieces (bed is partially raised in this image). Contact points have much less surface area than the g4112 on this 6/42 N-series example.

While both models function in much the same way, it appears as though the later versions were produced to cut weight and materials.
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images)

Post by signsup » Sat Nov 25, 2017 9:04 am

Only waking up this post for future reference and comments. Concerning the approximate change over dates for the logo embossed side panels and the serpentine brush guard. Just acquired this G506 assembled in Oakland, CA in 1/42 which makes it a 43 G506 non winch cargo. After doing a visual walk around, I have no reason to believe that the cab forward is all original.
The brush guard is serpantine with the external star washers and remnants of grund straps still evident. Same with embossed side panels. If these have not been replaced during a motor pool rebuild, then this would put as late as 12/42 for their original installation.

Just FYI.
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Re: Pictoral differences found on G4112 vs G506 (more images)

Post by forestry4evr » Sat Jul 28, 2018 4:51 am

Recently a new G506 buddy and I noticed yet another difference between the early YP model Chevy and the later "N" series trucks. The bed mounting system on the early truck (in this case both are Hercules Dump models) is markedly different. On early trucks, the bed is bolted directly onto the top frame rail with (5) 7/16 inch bolts per side. The N-series truck beds are mounted with (4) U-bolts, and a rear bracket on each side. YP model truck frames lack the rear bracket, and also lack the mounting holes. One more method to ID a Chevy frame vintage.

Image
Bed mounting system on N-series G506. Notice the rear mounting bracket (circled), and the rear U-bolt.

Image
Bed mounting system on early YP model G506. Note the simple bolt attachement on the top frame rail (circled), and lack of U-bolts or rear mounting bracket. Early frames are also not provisioned with the rivet holes for the rear bracket.

If anyone has a YP model truck with different bed configurations, I would be interested in seeing the mounting system.

Paul
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images)

Post by signsup » Sat Jul 28, 2018 6:15 am

Maybe this has already been mentioned, but while researching winch differences, I came across an early 12/40 Y series winch cargo and it has a much smaller front bumper with a roller attached to two brackets mounted from the bottom lip of the bumper. While my N series winch cargo has a dedicated winch bumper with the roller assembly being intergrated to a cut out portion of the bumper.
I can post a photo of my current N series winch bumper but do not have access to the Y series truck at this time.
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Re: Pictoral differences found on G4112 vs G506 (more images)

Post by forestry4evr » Sun Jul 29, 2018 2:27 am

signsup wrote:
Sat Jul 28, 2018 6:15 am
Maybe this has already been mentioned, but while researching winch differences, I came across an early 12/40 Y series winch cargo and it has a much smaller front bumper with a roller attached to two brackets mounted from the bottom lip of the bumper. While my N series winch cargo has a dedicated winch bumper with the roller assembly being intergrated to a cut out portion of the bumper.
I can post a photo of my current N series winch bumper but do not have access to the Y series truck at this time.
Yes the early winch trucks to have a bumper that is much different than the later N series trucks. Actually, the non-winch bumper and brackets on the early trucks differs from later versions as well.
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images)

Post by forestry4evr » Sun Jul 29, 2018 3:31 am

Found some images depicting early and late winch bumpers. Not the best images, but they convey the point.

Image
Early YP winch truck. Bumper actually looks the same as used on non-winch applications.

Image
N=series winch bumper. Note: bumper should be straight, not bent on the ends like this one.
1941 G4112 Chevrolet with Hercules dump bed

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Re: Pictoral differences found on G4112 vs G506 (more images)

Post by kelley » Sun Jun 02, 2019 3:38 pm

Here's a modest subtle difference between the early and late trucks...
My '42 has flat head machine screws attaching the grill to the radiator support...
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My '45 doesn't have the countersinks in the grill...
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Re: Pictoral differences found on G4112 vs G506 (more images)

Post by forestry4evr » Sun Jun 30, 2019 5:29 am

Hey all,

It has been quite a while since this old thread has been updated...

Found another difference between YP/ZP trucks and N-series trucks, this time on the spare tire carrier. It turns out that the 1941 YP and YP trucks did not have the ability to lock the spare tire to the spare tire carrier. N-series trucks have a longer stud drilled to accept a pad lock. Kind of odd that the later versions had spare tire locks as trucks by 1943 didn't even have a keyed ignition switch any longer?!

Image
Image of early 1941 YP model. Note the lack of drilled wheel stud on the right. Also, notice the hole stamped for a spare tire pad lock tether yet no ability to secure a lock?

Image
Image of early 1942 N-series model. Note taller and drilled wheel stud on the right. Yeah I know the image is real bad, but it is the only one I can find right now while I sit on my couch.

Paul
1941 G4112 Chevrolet with Hercules dump bed


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