i guess their definition of a lift bar is what i call a ladder bar

 

I am going to the track on the 28th, and I have a camera that I will try to put under the truck and see what they do.

 

Actually, the difference seems to be from where the torque is transferred. On a traction bar, it is transferred from some point beyond the axle; on a lift bar it is transferred from the axle tube itself.

Even after staring at the drawing, I cannot understand the practical difference, though. I cannot understand why the force vectors on the frame point in different directions. It still seems like once the slack is taken up and the tires are biting, the force would have a tendency to lift the front on either one.

I read an article one time in C&D that called a wheelie "climbing the pinion." Sure seems to me like that would happen with either bar.

Chassis engineering is damned complicated. And its study can be humbling. At least after the cumulative effect of 56,486 bong hits. But who's counting?

 

It had better have a slo-mo feature, because the action will be in fractions of a second.

 

Tim:

I am in complete agreement with the difference between traction and lift bars. I also agree that a $ 25.00 item that does not significantly increase unspring weight has to be worth trying. My next move is to go to www.summitracing.com......

 

Try AutoZone first, they are $40.00 at Summit. I will try to get them today.

 

just look at how they mount. the lift bar is mounted solidly to the axle. when the axle tries to rotate, the bar, in turn rotates with it, pushing up on the front mounting point. just think of it as an extension of the axle.

the traction bar has a bracket mounted to the axle. this rotates with the axle, and pushes forward on the bar, because the bar can pivot on the bracket. just look at the diagram, and think about what happens when the axle rotates.

i do agree that both versions will lift the front end, but the lift bars seem to have a better angle on it, while the traction ars would seem to me at least more versatle, like if you like to use the steering wheel when you race (instead of going in a straight line)

 

I think that the transfer is more pronounced with ladder-type bars because they are a rigid triangle to transfer the twist torque more effectively.

The traction bar in the picture below has a floating / pivot point I labeled with an "A" and a crude arrow. It also does not have the triangular shape of the ladder bar, which is certainly much more rigid and therefore able to transfer the torque twist more effectively.



At least that is what I see. I could be wrong, but I am certainly interested in your thoughts on this...

 

I put the springs on today. Got them at AutoZone for $21.00. The only ones they had were 1500lbs units that go on the rear of the spring. I just put them on the front.

I didn't take my camera to work so no pics yet.

I did do so "testing" on the way home, I think they worked, the rear didn't seem to jump around like it has before.

 

So, who want to make a set like this?


They hook at the front like the 58in bars, but at the axle like Lakewoods.

 

What was the part # on those? I may have to make a trip there to see...

 

I don't have a part #, but its the only ones they have that are half a spring.

In the box it was 11 1/4lbs.