Pirate 4x4 banner

1 - 20 of 21 Posts

·
Registered
Joined
·
436 Posts
Discussion Starter · #1 ·
I havent had the chance to go out and flex the rig since I finished the soa. I still need to bleed the brakes and get the front dshaft completed, but I did use the floor jack to jack up 1 corner at a time till the jack maxxed out. I noticed that the rear shackles didnt really move much. When I installed the rear 55 springs, I flipped the shackle hangers around backwards and rewelded them. The shackles sit straight up and down when the cruiser is parked. Should I have some angle on them or does it matter? Inoticed that my toy truck has the top of the shackles pointed forward almost 45*. I think some of that angle is due to worn springs though. Any suggestions? TIA
 

·
Registered
Joined
·
1,678 Posts
your toy truck is about the right angle. with you shackles on your FJ straight up, you won't be flexing as much and you will be riding pretty rough, try a little longer shackles or move your mounts a bit. with the reversal, i would let the springs settle about a month before i made any decisions though.
 

·
Zeus of the Sluice
Joined
·
4,740 Posts
shackle angle depends allot on the arc of the spring. If you are running flat springs, a 45 deg shackle would kick ass. a 45degree angle on a spring with allot of arc would limit the springs comp. My buddy (69cruzer) put waggy springs on the rear of his 40. they are around the same length as 55 rears. he left the shackle hanger in its stock position and fabricated a longer shackle to reach the spring eye. the shackle lays at a little more than 50 degrees. it provides gobs of extension and rides ultra cushy! <IMG SRC="smilies/biggrin.gif" border="0">

If I can find some pics I will post em
 

·
Zeus of the Sluice
Joined
·
4,740 Posts
<IMG width=640 height=480 SRC="http://www.pirate4x4.com/ubb/uploads/lnsskler.jpg">


this is the only pic I could find. It has tons more extension though, but it gives you an idea <IMG SRC="smilies/beer.gif" border="0">
 

·
Zeus of the Sluice
Joined
·
4,740 Posts
found this pic of my front shackle. the length and angle work great on my SR with flat springs.

<IMG width=640 height=480 SRC="http://www.pirate4x4.com/ubb/uploads/frontshacklerev.jpg">
 

·
Registered
Joined
·
890 Posts
do you know off hand the bolt size for stock cruiser bushings? im plannin to make some new shackles and need to know what size/length of bolts to buy and what size hole ill need...but the drill hole ill figure out w/ the bolt purchase. thanks!
 

·
Registered
Joined
·
2,302 Posts
I make my shackles with 9/16" bolts and bushings. You can also get some bushings that will take the 5/8" bolts. The 9/16" is closer to the stock pins for most FJ40s.
 

·
Registered
Joined
·
2,302 Posts
Holy Shackle Angle fc187!!!!!

How long is that front shackle? That thing must ride so soft up front with such an angle.
 

·
Zeus of the Sluice
Joined
·
4,740 Posts
Originally posted by Eric:
<STRONG>Holy Shackle Angle fc187!!!!!

How long is that front shackle? That thing must ride so soft up front with such an angle.</STRONG>
actually its 7 1/2" pin to pin at exactly 45 degrees.

It rides VERY cushy <IMG SRC="smilies/biggrin.gif" border="0">
the best thing is it allows the spring to really arc as it extends (gobs of droop)

<IMG SRC="smilies/beer.gif" border="0">
 

·
Registered
Joined
·
436 Posts
Discussion Starter · #11 ·
Thanks for the replies. I am running some used 55 springs in the rear with about 2'' extended shackles. I pulled the spring packs apart and cleaned/painted them before installing so they may settle out a little. I guess I will try to make a run or 2 with them this way before cutting out the welds and moving them forward. Thank God I didnt completly weld them in place yet.
 

·
Registered
Joined
·
1,610 Posts
So, to get a better angle, is it true the longer the schacle is the greater the angle? I'm running OME anti-inversions now because my rearced springs with stock schacles were straight up and down. Rides pretty rough.
 

·
Registered
Joined
·
4,072 Posts
longer shackle = worse angle

Why? Cause you are pushing the spring eye DOWN with a greater pin to pin distance, not BACK. Down will yield a worse angle.

You'll have to relocate shackle mounts to get a better angle...move them closer to the center of the spring.

IMO, flat springs are best with a 45 or so degree shackle. Lift springs with about 30 or so. Lift springs will lengthen on compression (as they flatten out) and you want the compressed shackle at around 45 degrees. Flat springs (IE: SOA with stockers) do not lengthen as they flatten and the shackle moves minimally on compression, but REALLY moves on extension. This is why FC187 can have that spring so close to the frame without contact...the shackle will only swing forward.
 

·
Registered
Joined
·
1,610 Posts
Thanx for the explanation Brian. The geometry is a real headscratcher to me. What I have in my rig are stock springs that were re-arced for lift. Actually more whole setup is kinda screwy at the moment. I'll be doing something different... just not sure what. Figure when I go on the <IMG SRC="smilies/fj.gif" border="0"> pigs <IMG SRC="smilies/fj.gif" border="0"> adventure next month I can pick up plenty of ideas. You know... bang! Gee if you just had.... bap! Rock rails woulda kept that rocker panel from goin' flat.

Good thing I got a spare body in the backyard! <IMG SRC="smilies/fj.gif" border="0">
 

·
Zeus of the Sluice
Joined
·
4,740 Posts
Originally posted by woody:
<STRONG>longer shackle = worse angle

Why? Cause you are pushing the spring eye DOWN with a greater pin to pin distance, not BACK. Down will yield a worse angle.

You'll have to relocate shackle mounts to get a better angle...move them closer to the center of the spring.

IMO, flat springs are best with a 45 or so degree shackle. Lift springs with about 30 or so. Lift springs will lengthen on compression (as they flatten out) and you want the compressed shackle at around 45 degrees. Flat springs (IE: SOA with stockers) do not lengthen as they flatten and the shackle moves minimally on compression, but REALLY moves on extension. This is why FC187 can have that spring so close to the frame without contact...the shackle will only swing forward.</STRONG>
good explanation bro! here are a couple more pics of my SR. flat springs with 45 degree shackles.......

fully extended....
<IMG width=640 height=480 SRC="http://www.pirate4x4.com/ubb/uploads/Dcp04440.jpg">

compressed.....
<IMG width=640 height=480 SRC="http://www.pirate4x4.com/ubb/uploads/Dcp04442.jpg">

front view....
<IMG width=640 height=480 SRC="http://www.pirate4x4.com/ubb/uploads/dsf.jpg">
 

·
Registered
Joined
·
1,345 Posts
get on with your bad self.
how did the bump stops work, do you think they helped out any. <IMG SRC="smilies/massey.gif" border="0"> <IMG SRC="smilies/fj.gif" border="0"> <IMG SRC="smilies/massey.gif" border="0">
 

·
Zeus of the Sluice
Joined
·
4,740 Posts
Originally posted by wngrog:
<STRONG>Looks AWESOME!!!!!!

When ar eyou going to take those training wheel s off and slap some real shoes on that piggie?
<IMG SRC="smilies/thefinger.gif" border="0"> <IMG SRC="smilies/wink.gif" border="0"></STRONG>
hey, leave my tires alone you meanie!
<IMG SRC="smilies/thefinger.gif" border="0"> dont you know I am insecure about my size <IMG SRC="smilies/biggrin.gif" border="0">

I kinda like the way the 33's tuck nicely, deep in the wells <IMG SRC="smilies/biggrin.gif" border="0"> plus I am building up a 40 into a kinda 45 flatbed buggy thing, and if I spring for new tires they are going on that.
 

·
Zeus of the Sluice
Joined
·
4,740 Posts
Originally posted by 69cruzer:
<STRONG>get on with your bad self.
how did the bump stops work, do you think they helped out any. <IMG SRC="smilies/massey.gif" border="0"> <IMG SRC="smilies/fj.gif" border="0"> <IMG SRC="smilies/massey.gif" border="0"></STRONG>
awsome! they worked perfectly.

usually with that much flex, my rear bumper is about an inch off of the ground. with the bump stop extensions its allot higher.
 
1 - 20 of 21 Posts
Top