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the two rails twist relative to each other. For there to be no twist behind the rear wheels the chassis rails would have to bend. They bend a bit, but not that much. Separately, if they bend differently between front and rear wheels it appears as twist behind the rear wheels. in addition, by...

I have water tanks between the rails, fuel tanks both sides. There are places in Aus where one fuel tank is insufficient. Description of mount locations in earlier post. I have three sprung mounts within 2m. Extra spring support at front. But that's unusual, just me being cautious about twist...

the difference between single and dual springs is finding the space so multiply design time by a factor (its nice if the same mount can be used in all locations else multiply everything by a bigger factor), multiply holes, bolts, washers, nuts, spring retainers by two, multiply mounting holes...

very important .... take note. Its the equivalent of me saying my original fixed mounts had twisting applied. Different way of saying it.

I have 6 of something like those, in a length of about 2m towards rear of chassis. Then two spring mounts at the front of sub-frame. I've forgotten the end of the calculations, a 5 degree twist over 4m (length of the sub-frame) is twice (in mm) that over 2m. I used to have three point mount...

we did the leading/trailing bit early on in this thread. I can't imagine the need for a balancing valve between front wheels, the pressure on each side should be equal. A brake pressure difference between front and rear may be needed, so valve included.

there's two design problems .... the brakes aren't particularly good forwards, and almost non-existent backwards (reversing), then there's maintenance, and if both shoes on each front wheel need similar adjustment at the same time there's a reasonable chance both cylinders are functioning, then...

this last failure was the bolts that hold the rear spring mount on the chassis broke. Not really a big problem, just something that happened, easily sorted on the roadside. Original arrangement would have been rivets. Bolts used when chassis replaced. All sorts of explanations possible...

I guess I'd know if my files were encrypted! :)

hopefully .... no pressure ... next weekend will do :-) do you have an accelerometer (maybe as easy as app on phone) for before and after?

yup, and even when its got it all, cached, and I replay it, its still jumpy for me because my computer is slow. I have a faster computer, that's jumpy because of download (only 30Mb/sec ...) but ok on replay. I went looking for how to convert my MP4 to something smaller but haven't found it...

the progress bar at bottom of videos usually/often shows both buffer and play progress so easy to distinguish between internet connection, buffering, caching, and slow computer.

even when I download (just wait for it to try to play to the end once then play again) some are jerky .... I have a netbook with an atom processor, which probably struggles a bit.

that's a bit unfortunate .... my chassis had some extra steel added in a former life (which I removed) so everything from the step backwards is bolted rather than any original rivets. My front spring mounts are riveted to chassis. I'm a bit surprised to see bolts on your rear mounts - but I...

the fuel consumption is way too high ------> perhaps something absorbing the power rather than engine not providing it ----> are all the brakes free, not binding, brake cylinders working, wheels free to rotate, free wheel hubs free, handbrake free, anything getting hot that shouldn't, etc...

average about 21 litres/100km between Mt Dare and Birdsville. Rig Road, Knolls Track, French Line, QAA Line. We had 4 weeks in the desert. Fascinating place.

a short video from Simpson Desert. Longitudinal dunes, about 10-15m high in this part. About 20km west of Poeppel Corner on French Line, traveling west. Overall we traveled west east. Higher to the east, lower to west. Toyo 285/70 19.5 at 25psi, 2nd gear. 600km, 1100 dunes, at average speed...

I had my springs made at Marsh Springs, Carole Park, Brisbane. They commented on how easily they could be stressed and permanently deformed. http://www.marshsprings.com.au/ I went from 3 point to "6" when I rebuilt the sub-frame. Lighter. Easier. The pivot was a bit complex. Hard to access etc...

reservoir on my 2005 FG649 in Aus has three outlets in bottom plus level sensor outlet.

here's an example of a build with panels (vanglass). the sub-frame is now spring mount rather than three point, and spare under the rear - long story. also roof now completely covered in solar. http://epicycles.com/Truck%20Blog/2010-01-01/2010-01-01.htm