junkyddog11 said:
TeriAnn, the pictures are a 109 tub on a 110 chassis....which is the question we have been (or supposed to have been) discussing form the original post.
Sorry I was obviously asleep at the keyboard and got everything backwards. Maybe I was overly influenced by my focus on leaf springs.
junkyddog11 said:
side note; leafers have the wheels by design, at rest, closer to the leading edge of the wheel well as the wheels travel backwards as the spring is compressed.
Well that's an interesting thing. Leaf springs under the rear of a Series rig dance a more complicated pattern than you describe while rock crawling. There is forward movement of at lest 5 inches in the pattern. I moved my rear axle back to get a little more clearance between the left rear tyre and my water tank for the dance to take place. 32 inch tyres in the stock location (1 ton springs, long shackles) can move forward just farther than the edge of wheel arch while rock crawling.
But yes if you just look at spring compression and shackle movement as the axle drops, the spring arch increases and the shackle bottom eye moves forward maybe moving the wheel slightly forward. As the axle moves closer to the body, the spring flattens(lengthens) the bottom shackle eye moves rearwards and the tyre maybe moves rearwards in the arch.
With a solid axle, if one wheel drops and moves towards the front and the other side moves upwards and towards the rear the whole axle assembly becomes slightly cocked. It is possible that a tyre climbing up an obstacle cocks it even farther than it would in a static arrangement. Especially if you ad in engine torque.
Maybe the pattern should be called "Dances with rocks" It would be a good name for a rock crawler.