SMOKEY wrote:Yeah Kev, I see the set up, on the rear diff from where the bracket that holds the coil spring on top of the diff is the diff mounting end of the tramp rod this is rubber bushed and the front of the tramp rod mounting is also rubber bushed with no allowance for the ark that the diff moves in when the rear shackles move back and forwards. For some time I have been watching Richards Hilux when he drops the clutch to tackle an obstacle, the Hilux squats in the back and gets good drive to the rear wheels, unlike most other vehicles that seem to jump at the back. Richards Hilux handles the starts the same as the speedway stock cars do, they have them set up so they drop their arses and get all the drive forward. I have been trying to work out how Richard achieves this , the stock car boys get there go forward by adjustments to the pinion angle, usually downwards, this in turn is transferred into pulling the back of the car down when the pinion tries to climb due to the rotation of the drive shaft and the resistance of the tyres. I am not sure how Richard achieves this but it works.
A CUNNING OLD FOX
FITZY.
Hi Fitzy
It is probably too complicated for you to Understand. Actually there is no rocket science to what I have done. Just luck.
What I did was fit an anti tramp rod the same lenght as the spring from the front shackle to the centre of the diff running the same plane higher up and forward of it. The rear end has a solid rubber bush and the front end has adjustable rubber bushes the same as the rear end of Safari radius rods which allow rotation.
The front of the rear hilux springs are shorter and nearly level and dont move forward and back that much as they go through their arch. My rear drive shaft only moves about 15mm
When I set up the anti tramp rod, I wind it tight on the adjusting bushes which pulls the top of the diff forward.
I have a couple of things opposite other people.
1 Nearly all my wheel travel is up .
2 I have not cut the rear end off because that is what stuffs Hiluxs.
I put all my weight at the rear of the deck. A 100kilos over the rear axle is 100kilos.A 100kilos mid ship is only 50kilos over the rear axle and 50kilos over front.
100kilos a metre behind the rear axle is miles more than a 100kilos because like a see saw it lightens the front because of lever action and gives good traction to the rear wheels and make the rear suspension work better.
So what I am saying is it a combination of a few things that makes the back sit down.
Cheer Richard