Isuzu npr 4wd

[gator70]

This picture is a frame (seen from the bottom) which is bolted to inner habitat bolt plates (NOT TO THE XPS COMPOSITE FLOOR - kind of like Bison Overland did) . There are 22 grade eight bolts for the attachment over a span of 3700mm x 2200mm.

Note: The wood beams hold the habitat off the ground so we can work underneath it.

 

[gator70]

If this is indeed a build thread, maybe you should include stuff that you have built, or modifications you have made to stuff you have bought to make it more specific for your own needs.
All you normally do is post pictures of other people's builds and make statements, instead of asking questions to resolve build issues YOU might have.
BTW... this thread was started nearly 2 years ago and you don't seem to have achieved all that much on your own build, which I would not really consider to be "average in duration".

I am not having a go at you for the duration of your build, because that would be extremely hypocritical if I did, but some actual content that involved building or modifying stuff would be a nice change.

Do I sense complaints?

 

[gator70]

I've posted this subframe picture before. We have since added a few more inner crossmembers. And on the main four corners, welded in 4 inch triangular gussets.

The material we used is cold rolled 5 inch c-channel, on the end.

 

[gator70]

The method to attach the subframe to the truck will be very close to this (using our spring plates)

 

[gator70]

Hmm, seems like a build thread to me

 

[gator70]

I just want to see how you don't end up with a big, wide rectangle when you remove your cab's rear window.
Sure, you can fill this hole in, but that is definitely going to be your starting point.
Looking forward to actually seeing photos of YOUR truck.

When using 12 gauge steel angle, say 4 inch by 1.5 inch. Then creating a picture frame design. Taking the frame and the truck to a body shop and requesting this replaces the rear window width by welding in place, 35 inches in height.

Now I look at a big opening with a "flange" from the 12 gauge angle.

I could cut a rectangle xps panel and use Sikaflex to install it on the flange.

Now I have a nice flat surface to cut the hole that matches my pass-through door currently installed in the habitat.

 

[Ferjablito]

Ya publiqué esta foto del subchasis. Desde entonces, hemos añadido algunos travesaños interiores más. Y en las cuatro esquinas principales, soldamos refuerzos triangulares de 10 cm.

El material que utilizamos es un canal en C de 5 pulgadas laminado en frío, en el extremo.

View attachment 907316

I've posted this subframe picture before. We have since added a few more inner crossmembers. And on the main four corners, welded in 4 inch triangular gussets.

The material we used is cold rolled 5 inch c-channel, on the end.

View attachment 907316

In my opinion, that St. Andrew's cross should be placed as close as possible to the cabin, which is where the inertia is strongest or where the chassis twists during flexing.

 

[SkiFreak]

Hmm, seems like a build thread to me

This thread is now 60 pages long. I would argue that the majority of those pages are not build related, but you do you...

 

[gator70]

This thread is now 60 pages long. I would argue that the majority of those pages are not build related, but you do you...

You are welcome to stop reading and commenting on the material, since it bothers you.

 

[glennm01]

This thread is now 60 pages long. I would argue that the majority of those pages are not build related, but you do you...

Respectfully, you seem rather intent on not letting him "do" him. Whatever sort of thread this might be, it's his, and nobody's being forced to read it. Love it or hate it, I say let the man cook.

 

[gator70]

Re Frame twist

I wonder if I'm doing enough?

++++++++++++++++

My current engineering provides for subframe frame separation

My front travel is 3 - 3.5 inch travel each side

My rear travel is 5 - 6 inch travel each side

(picture is of Fuso)

Note: I need to be aware of the over the cab roof queen bed. I have left clearance of 4 1/2 inches.

 

[Ferjablito]

Almost everything has already been invented; copying the good ones is enough.

 

[gator70]

View attachment 907429
Almost everything has already been invented; copying the good ones is enough.

Thanks for the comment.

The technical diagram of our subframe does not match the final product. It was a starting point. The "x" as the crossmember was moved back closer to where the rear axle is and closer to where the water / battery weight is. And this supports the point you made. We added pipe based cross members and 3 x 3 x 1/4 tube cross members in several other locations.

My final questions is how many spring brackets should I include over a 133 inch span?

The weight, subframe, plus habitat plus liquid weight is 5200lbs (about)

My six springs per side should support 1500lbs per inch, based on this data below.

Another builder posted this specs.

 

[gator70]

The red arrow points to a separation of plates

I found grade 8 washers bonded with rubber. I think each bolt should have two inserted there.




Note: hardware will be adjusted for final installation. And red is stronger than medium.

 

[Ferjablito]

The St. Andrew's cross is most needed at the point closest to the cabin, where it twists the most.