Anyone with 12" up front

[srimes]

What control arms are you running there Grimm?

 

[vetteboy]

Fenderwells? we don't need no stinking fenderwells!

I concur.

The brake booster was kinda one of my limiting factors...probably coulda worked around it, but I don't really need more than 12" travel up front on this thing.

 

[GrimmJeeper]

See that's what I'm talking about! Grimm I think this forum needs you to post a build thread...

build thread? maybe if it was actually worth showing off, lol. it still has a loooong way to go and it's not exactly built right... yet. I wouldn't want someone following in my jeepsteps and hurting themselves.

What control arms are you running there Grimm?

RC drop brackets, stock uppers, and fabtech lowers for that pic. first trip out I bent the hell out of the drivers side upper arm, it's been all downhill from there. my uppers are too long and my lowers are too short, caster angle is all jacked up and the jeep is all over the place on the street so I can't drive it. I'm working on it but with a $0 budget it's going pretty slow :rof:

 

[I Beamed Jeep]

Nice Grimm that's what I like to see xjer's thinking out side the box!

 

[J Money]

12" from a 10" shock?

Please post pics of that.

Here you go... Pictures below.

10" 2.5's that pull 11.75 inches give or take. No I am not disagreeing with you, anything over 10" is pretty much useless on these jeeps because of the bumpsteer. However 12" can be achieved with a 10" shock. Just like an A-Arm setup, you can adjust the shock position to achieve a higher motion ratio.

I totally agree that trying to get 12" is pointless and shock tuning is going to be way more important than travel numbers.

 

[GrimmJeeper]

 

[DieselSJ]

k. Just like an A-Arm setup, you can adjust the shock position to achieve a higher motion ratio.

Yes, but typically you need to mount the shock to one of the control arms to take advantage of the ratio. Shock mounted to the housing is a 1:1 ratio - if the housing moves an inch, the shock moves an inch (of course taking funky mounting angles out of this discussion because they do not apply here).

 

[vetteboy]

Yes, but typically you need to mount the shock to one of the control arms to take advantage of the ratio. Shock mounted to the housing is a 1:1 ratio - if the housing moves an inch, the shock moves an inch (of course taking funky mounting angles out of this discussion because they do not apply here).

If it's a radius arm setup, isn't it kinda the same thing as mounting it on the control arm?

What matters is where the axle tube & shock are compared to the instant center...

 

[slappomatt]

Here you go... Pictures below.

10" 2.5's that pull 11.75 inches give or take. No I am not disagreeing with you, anything over 10" is pretty much useless on these jeeps because of the bumpsteer. However 12" can be achieved with a 10" shock. Just like an A-Arm setup, you can adjust the shock position to achieve a higher motion ratio.

I totally agree that trying to get 12" is pointless and shock tuning is going to be way more important than travel numbers.

Pretty sure that would still cycle 10" or less. hopefully less as you would be bashing your shots hard. Fox shocks count the total shaft length not counting the rubber bumper on the end of the shaft.

As someone else said if its vertical and its mounted to the axle its only going to cycle what the shock is.

I am getting ~9" in the rear with 8.25" shocks because they are angled in a decent amount.

 

[casual]

It depends, are you running a 2.0 or a 2.5? If a 2.5 stay with a 10" and have a longer reservoir installed. If a 2.0, go ahead with a 12" shortbody.

Ok so following Jims advice heres what I've come up with.

Bilstein 7100 12" short body (2.0) $190
http://offroadwarehouse.com/products/sfID1/12/sfID2/156/sfID3/809/productID/39239
or
Fox 2.5 10" travel shock. $400
http://offroadwarehouse.com/products/sfID1/12/sfID2/113/sfID3/95/productID/71

The 2.5's are obviously better and what I'd perfer to use. I'm just making sure I got the right shock?
And with a 2.5 10" travel shock should I still mount the lower shock mount lower or at stock height for 5" of lift?

 

[slappomatt]

I am running stud mount 9.5" stroke 2.0's for a JK and we had to move my lower mount down about an inch or so. but I only have a 3.5" lift. not sure how much longer 2.5" shocks are though. it should be close. you need to cycle it out to measure how much up travel you have. bump stop accordingly and then figure where the shocks need to go so they don't bind.

 

[casual]

well with 2.0 12" shocks you have to move the lower shock mount down to stuff them in..
I just can't find extended/collapsed lengths for bilstein 7100 12" shocks.

If its anything similar to the Fox 2.5 10" (Ext 29.43" & Col. 19.50") then I should be good. Plans are to run Fox 2.5 10" up front & Fox 2.5 16" rear. (maybe 18's???)

 

[silverslk]

well with 2.0 12" shocks you have to move the lower shock mount down to stuff them in..
I just can't find extended/collapsed lengths for bilstein 7100 12" shocks.

http://www.raceshock.com/Bilstein/bilstein7100.htm

 

[casual]

So stock shock mount location is fine for the Fox 2.5 from what I'm seeing?
I thought the only reason to lower the shock mount was to stuff a 12" shock in there?

 

[RandomThoughtsRace]

Since we are bringing up the fact that bumpsteer is an issue past 10.xx" on the XJ... 11" of fury (or the 2.65"x11" "crazy jim") is about it.

http://naxja.org/forum/showthread.php?p=245045774#post245045774

 

[J Money]

Pretty sure that would still cycle 10" or less. hopefully less as you would be bashing your shots hard. Fox shocks count the total shaft length not counting the rubber bumper on the end of the shaft.

As someone else said if its vertical and its mounted to the axle its only going to cycle what the shock is.

I am getting ~9" in the rear with 8.25" shocks because they are angled in a decent amount.

It cycles over 10... I promise. The peeps that have seen my little beater will tell you it's legit.

 

[slappomatt]

wish I could cheat physics like that....

It does look great though.

 

[I Beamed Jeep]

I'm with J Money we moved the lower mount back some our shock is tweaked a little but the measuring tape don't lie 10 in shocks 12in travel top to bottom and it will be strapped at 11 then we'll let the strap stretch.

 

[DieselSJ]

I'm with J Money we moved the lower mount back some our shock is tweaked a little but the measuring tape don't lie 10 in shocks 12in travel top to bottom and it will be strapped at 11 then we'll let the strap stretch.

How "tweaked" is the mounting angle? With the top in the stock location it is still going to be a fairly straight up and down mount and the ratio is still going to be 1:1. You can also do some things with unequal arm lengths and let the housing rotate but that just does stupid things to your caster angles.

 

[slappomatt]

Its hard to tell from the pic's kinda looks like its still short arm so it could have some pretty good sweep with that kind of travel. I guess if it sweeps a lot then it could possibly get the angle on the shocks like that.