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Author Topic:   Leaf spring sliders
backwoodsracer
Member
posted March 17, 2003 12:12 PM
mount them flat, with the rear eye 9 inches higher than the front eye.

dont bother with 4 front holes. just use the blocks to adjust cross wt. and ride ht.

the front movement will make very little change, move it a inch and ride ht will change a 1/4 to a 1/2... not worth it.

jeff

c21
Member
posted March 18, 2003 11:51 AM
c21

your thinking a slider pointed up in rear is going to slide easier than a flat one??

the pt of sliders is they have little to no friction if installed level,straight like the directions say...

hows front adjustable mts going to effect anti squat?

and even more how would it effect roll steer??

roll steer is going to be simply determined by the lr squating and moving back less than the rr spring does, thats why most run a adj lower block on the rr with varying differences of lead.

i allways lead the rr 1/8 inch, to start and adjust from there.

jeff

c21
Member
posted March 19, 2003 05:33 PM
quote:
Originally posted by 66jj:
c21

your thinking a slider pointed up in rear is going to slide easier than a flat one??

the pt of sliders is they have little to no friction if installed level,straight like the directions say...

hows front adjustable mts going to effect anti squat?

and even more how would it effect roll steer??

roll steer is going to be simply determined by the lr squating and moving back less than the rr spring does, thats why most run a adj lower block on the rr with varying differences of lead.

i allways lead the rr 1/8 inch, to start and adjust from there.

jeff



by changing the angle of the slider you change the motion ratio of the car relative to the rear spring which in turns changes the wheel rate or effective spring rate.

I have seen instructions written both ways, if you go to Afco's tech site ...http://www.rpmnet.com/techart/leaf.shtml
... you will see that the slider is mounted on the datum line, not level.


front eye height effects anti-squat similarly to the way that trailing arm mounting locations effects it .... if the eye is directly ahead of the rear axle there is no body lift on throttle , the higher the eye is above the axle the more it is lifted as the rearend pushes forward ..... the hight and it's effect are expressed as "percent anti squat"


similarly to a rear end with conrol arms if both eyes are directly ahead of the axle (and the lr extends the same amount that the RR compresses in roll) there will be little or no roll steer , but ... as the eye is relocated higher (or lower)relative to it's rear axle mounting location ..... it's responce in roll no longer inversely complements that of the other side ..... causing roll steer. of course if you lowered the rt eye the same amount that you raised the lt eye you might have little roll steer (still assuming that the LR suspension extends the same amount that the RR compresses).

I hope that helps,

c21

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