I have deleted the personal attacks &/or posts related to those &/or irrelevant to the thread.
Thank you for doing that. I didn't see the deleted posts and I prefer not to have seen them. I guess a lot of LR forum users are more in tune with the "live to flame, flame to live" forum style.
<<SNIP>> my answer is to keep the trucks simple and light. Outside of the Hi-Cap 110s and 130s, the Rovers do not perform well when overloaded. Making the choice to travel in a vehicle (NAS) with at worst a 93" WB, most likely a 100" WB and at best, a 109" WB is going to demand some compromise in what you can take along with you.
I don't think it is quite as simple as all that. Take a Series III 109 stationwagon for instance (Because I have the factory tech specs book for SIII).
The factory specs for 100% stock factory configuration are:
Running weight with 5 UK gallons of petrol - 3752 lbs, 1702Kg
rear axle weight - 2013 lbs, 913 kg
front axle weight - 1739 lbs,789 kg
Max. gross weight cross country - 5705lbs, 2590kg (1953 lbs, 888kg max carrying capacity)
Rear axle max load - 3565 lbs, 1620 kg (1552 lbs, 707 kg max carrying capacity)
front axle max load - 2140lbs, 970 kg (401 lbs, 181 kg)
A few things jump out from these numbers. A Series rig is designed to be able to carry a lot of weight cross country but most of it on the rear suspension. A big winch up front, a heavy front bumper or brush guard, bonnet mounted spare, two people in the front and you come close to maxing out the stock front suspension. Add weight to the front of a roof rack and you can overload the front suspension (Why you sometimes see half roof racks mounted on the back half of a Series rig).
Different models of 109 have different load capacities. This is due mostly to the springs fitted to the truck. At the high weight end, the factory used stronger axle assemblies and reduced gearing to go along with their stiffer springs.
While I agree with you that light weight always works; less stress on the drive train, more flexible suspension can be fitted, better power to weight ratio, easier travel over less solid ground, I believe that Land Rovers can do more than carry minimal weight dependably.
When you start thinking about modifying a Series Land Rover (probably the others too but Series are all I know) for expedition style travel I think the primary focus should be on centre of gravity management, staying within the off road limits of your suspension, not overtaxing your drive train, having an acceptable power to weight ratio and the carrying capacity of land you intend to drive over. Once you have your truck set up and know your axle weights THEN you pick your springs to match your truck weights. I've seen way too many people start with springs without giving vehicle weight & distribution a thought. And I have never seen weight & load specs for parabolics.:Wow1:
I'm going to use my truck as a real life example of what I mean. I'm a believer that the more comfortable your camping situation is and easier it is to set up at the end of a day the more apt you are to enjoy being out on the trail for long trips. My truck is targeted for mostly firm soils. Travel in the Pacific North West include rains that sometimes lasts a week.
To meet my comfort goals I have chosen to build my truck into a class B RV with minimal outside camp set up and comfortable inside living. I also required interior space for a giant breed dog.
I personally prefer to have my vehicle's centre of gravity to be as low as possible, centered side to side and a little aft of centre front to rear so the vehicle is a little more apt to stay with the rear wheels than the front, the stronger rear suspension can handle a little more than half of the work and so that the rear wheels have a little more weight for traction.
To this end I added 2 additional fuel tanks for a total capacity of 42 US gallons of fuel at frame level. I have a 15 gallon stainless steel water tank sitting directly on the frame a little aft of centre on the left side. To balance the water weight, both of my batteries are at frame level on the right side as is my horizontal mount 5 gallon propane tank and my refrigerator (15 inches above frame top level). Every attempt was made to put as much of the added weight in the rear 2/3rds of the truck, as low as possible and evenly distributed side to side.
My truck, fully loaded for a trip including 40ish US gallons of fuel, full water and propane with normal roof rack load weighs 5790 lbs, 2630kg. Loaded front axle weight is 2460 lbs, 1117 kg. Loaded rear axle weight is 2980 lbs,
1353 kg. The ruck is well within the load range of stock 109 station wagon rear springs but the front overtaxes the stock front springs. So I fitted the heavier duty one ton springs to the front.
So the truck has as low a centre of gravity as I can achieve with the expedition (camper) gear, the slightly aft centre of gravity that I prefer, is just a tad heavier then the factory maximum specified cross country weight for a stock 109 stationwagon (well below maximum cross country weight for a One ton) but the extra weight on the front axle is compensated for by the heavier duty front springs.
At this point I have what I consider a balanced truck with decent c.g. that has a suspension matched to the vehicle weight. But the power to weight ratio is crappy, the vehicle weight is a tad higher than the maximum the drive train was designed to handle and that the brakes were designed to handle. So I added front disc power brakes to handle the extra weight. Swapped in a more powerful engine to provide a better power to weight ratio than a stock empty vehicle and uprated every part of the drive train, except for the transfercase to handle the extra power and weight.
To my mind this is the heart of fitting the expedition (camping) gear you want into a truck and ending up with a reliable truck that handles well.
We each have different gear requirements to meet our perceived needs. We each have our own ideas of what constitutes a good camping/travel experience. The gear you carry needs to address these needs for you and your passengers. No two people are likely to find the same set up to be optimal. The real key issues are where do you put/secure it for both convenience and for optimum vehicle centre of gravity, setting up your suspension to best handle the weight you are carrying through the intended driving terrains and having a drive train that can reliably haul your gear leaden truck.