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Trail Tampon
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6,028 Posts
Discussion Starter #1 (Edited)
check my 4 link numbers (i think i got it)

this is my first go at it so flame away:flipoff2:

the ride is a xj with 39.5 iroks and rear 60.

we took all the numbers from a 8.25 and 36 so i adjusted as best i could







static anti squat looks good but the droop and bump numbers are kinda scary... can they change???

i also cant find the rear steer numbers???

what do you think?
 

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767 Posts
Looks like you need more research, 18% AS is not the ideal number you are shooting for somewhere around 70%. Raise the upper link above the axle 4 to 5" and you will raise your AS%
 

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Trail Tampon
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6,028 Posts
Discussion Starter #4
i was shooting for a low as #

there are too many opinions flying around.

the rig will be mostly crawling and hill climbs, no planned jumps or hwy speeds
 

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raise the rear mounting height of your uppers or lower the forward mounting point of your uppers.

Bring the instant center down.

and just post the file so if someone chooses to spend a few minutes and help they don't have to spend an hour inputting all your data.
 

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Trail Tampon
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6,028 Posts
Discussion Starter #6 (Edited)
raise the rear mounting height of your uppers or lower the forward mounting point of your uppers.

Bring the instant center down.

and just post the file so if someone chooses to spend a few minutes and help they don't have to spend an hour inputting all your data.
i have adjustable mounts on the uppers on the frame side and all calculations are done at the highest point. the lowest point is 4" lower

the last post with the uppers in the lowest point will give a 110% to 54%

no idea how to post this file though... any ideas???
 

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You don't have the solver add-in installed and it is not calculating the travel. Look at the Length0-Length1 box. It should be 0. If it is not it isn't calculating.
 

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Trail Tampon
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6,028 Posts
Discussion Starter #9
gotcha,

ill post the numbers soon

thanks for the help.
 

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Trail Tampon
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6,028 Posts
Discussion Starter #10
guys,

when it is said that the upper's length should be 75% of the lowers... does that mean total length or distance from the axle???
 

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Trail Tampon
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6,028 Posts
Discussion Starter #11 (Edited)
This is a good final revision. I finally figured out the travel calculator. And I think this is the best I can do.



All travel numbers are 4” up and 10” down



Anyway at the top position on the frame side upper mounts:

Static anti squat= 76

Droop anti squat=85

Bump anti squat= 74

Max pinion angle deflection= -4 degrees



second position on the frame side upper mounts:

Static anti squat= 84

Droop anti squat=90

Bump anti squat= 83

Max pinion angle deflection= -5.3 degrees



Third position on the frame side upper mounts:

Static anti squat= 91

Droop anti squat=95

Bump anti squat= 92

Max pinion angle deflection= -6.5 degrees



bottom position on the frame side upper mounts:

Static anti squat= 99

Droop anti squat=99

Bump anti squat= 101

Max pinion angle deflection= -7.7 degrees



 
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