JEEPWERX CJ7 Buggy Style

[JEEPWERX]

How else do I figure out the sprung weight then by weighing the entire vehicle first.
Then jack up the chassis to pick it off the bump stops. 
Subtract that measurement from total weight.

Race scales sound perfect.

[M4wdFab]

Race scale procedure: get corner weights with no springs or shock pressure, sitting on bump stops. Then put the chassis on jackstands off the stops to get the unsprung weight and subtract.

That's my thought, anyway...

good idea, add measure angles of shocks at ride height also

[mr.mindless]

I forgot about angled shocks. very true.

[JEEPWERX]

Different spring rates offer different dampening effects.
100 over 350 would be better for a rock crawler.

[mr.mindless]

Need some trig to go from the scales to per-inch weights on the shocks but you're a carpenter. You understand angles

[JEEPWERX]

This is may all be a touch too technical for this buggy.
she is no Ultra 4 car

[mr.mindless]

100/300 and 200/200 give the same total rate before the dual rate stop but the 100/300 gives you three times the rate after you hit the stop. much more progressive so you don't crash through your travel.

right?  EDIT: no, I think I'm wrong on that. It's not a+b/2 for total rate, it's something else....

I'd think we actually want more progressive on the gofast than for a crawler that wants to end up using all travel.

Things that probably belong in a suspension tuning thread?

[JEEPWERX]

I do understand angles...

[M4wdFab]

Different spring rates offer different dampening effects.
100 over 350 would be better for a rock crawler.

spring rate does not relate anything to dampening
i believe rock crawlers like single rate (no dual stops, and same upper/lower) because they want smooth consistant suspention travel, not like a racer on an O SHIT jump stop my car from EXPLODING on landing

[M4wdFab]

100/300 and 200/200 give the same total rate before the dual rate stop but the 100/300 gives you three times the rate after you hit the stop. much more progressive so you don't crash through your travel.

right?

I'd think we actually want more progressive on the gofast than for a crawler that wants to end up using all travel.

Things that probably belong in a suspension tuning thread?

almost, but 100/300 is total rate of 75, 200/200 is 100

[M4wdFab]

1/Kt = 1/K1 + 1/K2

[Ryan]

for that car i would get 3pairs of 150, 1 pair of 200, 1 pair of 250

2.5x14x150  2
2.5x16x150  2
2.5x14x200  2
2.5x16x200  2
2.5x14x250  2

That should cover you for most situations. maybe an 18"x200 but I think 2 16" on those will work just fine.

DO you have limit straps?

[Ryan]

I just checked pricing at VC, looking at about $38 per coil depending on size, Plus shipping.

[JEEPWERX]

K thanks Ryan
No straps yet I need to order  how much shorter then overall shock extension should I order straps?

[Ryan]

K thanks Ryan
No straps yet I need to order  how much shorter then overall shock extension should I order straps?

I think 2" maybe??