Alignment facts

Awesome topic...thanks!

 

Your definition of set-back sounds like caster to me.

Something entirely different than set-back

 

Setback in alignment terms is the position of the right wheel in relation to the left wheel on the steer axle, right wheel being either forward of the left wheel at center steer or behind left wheel. In laymen terms, it shows if the axle is positioned square in the truck.

 

We defined that as thrust angle.

Set-back was on like a T600 axle vs a W900

 

I always heard setback as bender described it.

 

Setback is the relationship of the front wheels to each other (one being forward of the other)

Thrust angle is more advanced in bringing the rear wheels into the picture and their relationship to the front by using the thrust line.

 

I would like to mention that after a proper alignment, it shouldn't need to be done again unless something is bent or worn out. After a truck is aligned properly, wear issues are usually from loose wheel bearings, shocks, improper inflation, etc.

 

http://www.anewtoronto.com/wheel alignment.html

Yop, you were right. I had never heard it called that.

Here are some of the other terms that are important.

Alignment is something I have done on my vehicle annually whether you think it needs it or not. Including rotates and balances.

I know I could sure have my cascadia's tires balanced, but that isn't my call.

 

Great post! The pictures should really help people visualize what is going on!

 

i have a ??? for you guys..my truck (dump truck) has a bounce at about 30mph up and down and is bad when loaded..the tires have been changed and still there..the shocks was new 5yrs ago my need to change now but i have did the touch and they where warm when i touched them...now the pass. tire wears a little more then the driver on the inside but not much..my truck has the big 425/65/22.5 what should i be looking for on this???? it use to drive fine then this started .....also when i put a new set of tire on they spin bal. them and was checked for out of round and was good....the bounce is just bad when loaded ...thanks mike

also thanks for this write up there is alot of great info here..as well as the board it self...great guys and gals...lol mike