Isuzu npr 4wd

gator70

Active member
Update:

Habitat is in transport down hwy 10 to my welders shop

All metal for the subframe and brackets are cut (not welded)

Next steps: subframe mounted to the bottom of the habitat.
 

gator70

Active member
Why?
Mount the tank off your subframe... problem solved!

Thanks for the tip, we just might do that

(hang it off of the rear of the subframe under the rear storage box - fits in-between frame rails)

This would increase my freshwater capacity to 81 gallons.

1740756311073.png
 
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Korey H

Well-known member
Stay as close to stock as possible. Therefore no issues on the trail. My truck is still with those guys. (so maybe it was there when you visited) They are installing a auxiliary fuel tank. I'm patient, still building subframe as we speak.

View attachment 871480

Note: I can deliver the habitat and subframe installed (turn key) for $60K if you want a Isuzu or Fuso build
Thanks. We are a family of six so it takes some serious tetris to fit us in. Currently in a 14’ habitat on a c5500 (@wehartstravel). May try to do another similar size habitat but with a RTT above the cab for a bit more space. I very much like the above cab bunk though.
oh on a prior question try to go as readily available on six for your tires and carry two spares even if one unmounted (depending on your travel plans). We had a set of wheels fail and I ultimately had to import a set to Guatemala. I had plenty of tires but couldn’t imagine trying to source a continental mpt which we run. I know ours is a one off experience but best to be prepared. Local road side mechanics can fix pretty much anything as long as you have the parts. Also I use just a standard steel cable hoist as our spares live above the cab, works well enough. I’m upgrading our hoist now to a Spitzlift and am excited about it.
 

gator70

Active member
I'm looking for ideas how to use the bathroom shower space. This wet bath is a bit oversize and I would like to hang or store in this space, as the use of this space for a shower and bathroom activities is so limited in a 24 hour period.
 

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Peter_n_Margaret

Adventurer
We have a similar wet bathroom. I fitted a sliding window that can be left open while driving and there is a diesel heater outlet there too.
Our diesel heater is always producing heat from the engine while driving which heats the hot water but it can also be used to heat the bathroom which becomes a very effective cloths drying cabinet (door closed, window a little open).
Cheers,
Peter
OKA196 motorhome
 

gator70

Active member
I'm looking for ideas how to use the bathroom shower space. This wet bath is a bit oversize and I would like to hang or store in this space, as the use of this space for a shower and bathroom activities is so limited in a 24 hour period.


Nice idea (removable teak shelf)

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gator70

Active member
Weight distribution.

The weight for water tanks and batteries is over the rear axle, and slightly behind it. The Isuzu NPR HD has a 11,000 lb rear axel capacity.

The OEM fuel tank is directly behind the rear axle. The Auxiliary fuel tank is in front of the rear axle, both mounted between the truck frame rails.
 
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Ferjablito

Active member
I have always read that the best place for the weight of tanks or large weights from the rear axle to the cabin is as close to the rear axle as possible.
 

Ultimark

Active member
I have always read that the best place for the weight of tanks or large weights from the rear axle to the cabin is as close to the rear axle as possible.

Yes and no.

If you are talking about a vehicle that will be purely transporting goods over reasonably well constructed roads, then yes, that is a pretty good idea. After all why not make full usage of the larger rear axle componentry, which normally includes 4 wheels on the single rear axle.

However as this vehicle is running 4 wheels, one in each corner, then weight distribution starts to be a more critical factor. In an ideal world when really needing 4x4 driving mode, as opposed to just using 4x4 mode, weight distribution is usually a critical factor for vehicle longevity and/or the ability to extricate oneself from an interesting situation.

I was taught to drive 4x4 and 6x6 military trucks nearly 55 years ago in an extensive military driver training regime over a nearly 4 month period. Then I was sent into the field where I really started to learn and understand the dynamics involved in getting both the truck and driver in a position that enabled safe transport across various terrain without damaging the vehicle, and hopefully without getting stuck.

Although many 4x4 trucks generally have nearly double the rear axle capacity over the steer axle, the super single wheel/tyre combinations most of us adopt with these Japanese light trucks is always identical front and rear. This then dictates, to a degree, that both axles should generally be equally or nearly equally loaded. Another critical element is air pressure in the tyres when running in low range 4x4 and requiring low air pressure to traverse the terrain.

The best case scenario when using low air pressure situations is for all tyres to be running the same air pressure, this then equals out drive train forces across both axles and wheels. By doing this, vehicle stresses are shared right across the whole chassis, and equally between the front and rear axle. As a result, your engine driveline should live a longer life, and your chances of getting out of a sticky situation are usually greatly enhanced.

Mick.
 

rruff

Explorer
Although many 4x4 trucks generally have nearly double the rear axle capacity over the steer axle
Just to clarify, that is opposite...

More than double is common for 5 series pickups. I don't think switching to super singles would dictate equal loading. The front tires would simply be way below their capacity. Using LT tires on the front seems like a sensible way to go, but don't recall anyone doing that.

I agree that more equal weight distribution would be better for offroad performance.
 

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