R Cubed

Yes seen that done on Land Rover for trialling comps. More interested in the types of designs differences rather than mods on existing items.

Moving on a little from diesel engines in GMC's and air brakes got me thinking, yes I know that's a bad thing as I type stupid things but it gets people thinking which is a good thing. Not considering the diff ratio, are there different types of diff, is the pinion in a slightly different position, are the gears cut at different angles are there bearing differences are there other options other than crown wheel and pinion ? Which is stronger which will transmit more power or is it torque :nut: which allow faster speeds ? How do modern diff's differ to war time or pre war diff's, does the quality of steel have an effect?

Any luck with it ? how is it going.

Thanks for all the suggestions.

Thanks, lots of work still to do, I want to sort the hydro / pneumatic recoil damper out and the elevating crescents, this involves a total barrel strip down and sledge removal which I hope to photograph and explain on here. Oh I have edited Breech for you :cool2:

No dont want to increase the pressure but make the system safer as only single circuit and go to dual circuit. The idea of finding out the pressure before the hydrovac and then after it is an interesting one did no think of that one.

Testing and messing about with the brakes. Thinking out loud, now how can I prove a trial system works, if I measure the wheel cylinder pressures of the original system at a given force on the brake pedal, say by putting some scales between my feet and the pedal and apply a set force then read the pressure ? Then fit a new type system and do the same test and get a better reading with less force would it be reasonable to assume the brakes would be better ? Also the brake bias would not be affected as the wheel cylinders will still be the same so the effective forces will be the same in relation to front and back. This is assuming the volumes of fluid are equal to what has been removed. Also please note these trials would not be carried out on the road.

Sorry forgot to mention this is not for my 352 at present but for a hypothetical 353 being used loaded (upwards of 3 tonnes) on road. Going back to my truck when I did the brakes about 10 years ago, I overhauled all components and relined all the shoes with lining from Rex Ward so should be up to the job, theses are now getting low in places and so will soon be due a change, as will the hydrovac will have a strip down and a clean out and check over, don't have new drums ( probably not available ) they have not been skimmed as they are in good condition, not scored or damaged. Would be interested in the tollerance limit dont know if anyone would know it, if someone does please let us know ?

This is all in the thought process thanks, if the truck is loaded and we need to stop it quickly it would be nice to know that the brakes could lock it all up if needed, also being loaded I am not so keen on the only single circuit bit, although I regularly inspect the whole system on my truck you don't really know the quality of the weakest bits, which in my view would be the flexible hoses to the wheel cylinders. Only need one to burst and you right in the doo doo....

That's a thought, I have a hydraulic powered master cylinder off a BMW 735csi operates just as you described runs off the power steering system.. Food for thought.

Surely the pressing too hard would be down to the experience of the driver, learning how the vehicle reacts in relation to how fast and how hard you push the pedal and also the feedback of the pedal as you push it. I have driven some really new cars while my works van has been in for servicing and repairs ect and new cars brakes are awful, so light and no feel as soon as you touch them you are through the windscreen, well it feels like that.....

Yes I am working out that way this week, how do I find out if they have some, surely I cant just drive up to the gatehouse and ask for some racking !!!!!!:blush:

Thanks what are the sizes of the ones you have got ?

PM sent.

Bomb Disposal transit van with blue lights on. Southbound A3 Hindhead devils punchbowl.

Still looking for the industrial type of pallet racking can anyone help.

P.M. sent:cool2:

Do any of you out there, have or know where I can get the industrial style pallet racking like the dark grey and orange stuff in warehouses ?

No complaints here and she even likes the smell of gear oil on the overalls :shocked:

OH NO YOU WONT :nono::nono:

Well diving off in to the realms of stupidity now. How about this set-up. You have a full air system from foot brake pedal right to the wheel actuators, but rather than these operating the " S " cams on the brakes, the actuators operate air over hydraulic slave cylinders one for each axle so 3 in total these would then run down to the existing truck wheel cylinders. The problem of the air / hydraulic units not having enough hydraulic fluid volume would be ruled out as there would be 3 separate hydraulic circuits no chance of total brake failure and a reliable air system for the foot pedal.

Yes there is lots of room in a ben hur trailer, all that lot could fit in there :nut:

This is a very interesting point, which I have heard before, now I have rebuilt my brakes completely from the maser cylinder to the wheel cylinders including all the flexible hoses the steel lines in the chassis have been replaced with copper nickel, all brake shoes, and hydrovac seals. Now although they are much much better than they were when I bought it 14 years ago I would still say you have to push the brake pedal quite hard to get it to stop quick !!!

Arr but disc calliper pistons are also a bigger diameter than a wheel cylinder so although it might not actually move as far there is more fluid entering it to move it in the first place, if you see what I mean, the volume might be roughly the same comparing it to a smaller dia wheel cylinder moving further, or not, I would have to work it out. So with discs needing a higher pressure the brakes might be very good or even too good.

Yes this has sprug to mind I was thinking of calculating the volume of all the master / slave cylinders and then doing the same for all the wheel cylinders and also measuring the fluid pressures at the wheel cylinders so I know where to start !!! :nut: I think....