4 link [Archive] - BB.BC4x4.COM

: 4 link



DaveW
November 1st, 2009, 11:41 am
Sitting hear getting over the flu and my head doesn't seem to be working correctly.

When doing the 4 link calculator numbers in the rear the antisquat above 100% will raise the rear when on the gas. If I use this for the front is it just the same or the opposite. i.e. over 100% will cause the front 4 link to raise or lower when hitting the gas?

SNORTclown
November 1st, 2009, 05:46 pm
it will be opposite. the front will squat.

DaveW
November 1st, 2009, 06:17 pm
Cool that's what I was thinking.

What sort of numbers are guys shooting for in the front?

Right now my rear is set for 103%.

MudKick
November 1st, 2009, 08:26 pm
I cannot contribute to to front debate as I'm too old school (still rocking cheating radius arm setup).

Rear:
I have my 3 link in the rear set at around 104 and am pretty happy with this number. I think being just a tad over 100 is a good territory to be in.


Now I may be speaking out of my ass but wouldn't you want the front close to neutral as well and also matching the rear so you are not loading up your suspension with bind instead of turning your wheels?
I guess what I'm saying is that one would shoot for a mirror reaction to the rear?
I'm curious myself...

DaveW
November 2nd, 2009, 09:00 am
I was thinking of going higher with the front i.e. 110-120% to bring the front end down for nasty climbs. But that may be too much.

MudKick
November 2nd, 2009, 09:19 am
Ha, ha! I guess that certainly will depend on your driving style. Knowing you... it may make sense to go in that direction :whiteflag:

For me for example I would not attack the hill as aggressively as you, but during technical climbs the nose down will mean harder time to get over stuff.

TonkaToyKiller
November 2nd, 2009, 04:48 pm
I'd go a bit less and use a suck down winch!

DaveW
November 2nd, 2009, 07:24 pm
Ah, good point Jamie. Maybe I'll do that.

rkjplt1
November 2nd, 2009, 08:13 pm
Suck down winches only take away from ground clearance.:redneck


I tryed to get as close to 100 in the front and just over in the rear. It seems to work pretty killer on huge climbs with water in the front. I put a little extra nitrogen in the RR coilover. It seems to counteract the torque of the engine pretty decent.

But you know all this stuff Dave. :cwm30:

pook
November 12th, 2009, 12:01 am
I was thinking of going higher with the front i.e. 110-120% to bring the front end down for nasty climbs. But that may be too much.

Mines pretty high front and rear. I never ran the numbers.

DaveW
November 12th, 2009, 03:35 pm
Pook, one thing I noticed on Curty's truck versus mine with high % is that my 4.0L stuck the tires and climbed. Curty's has way more power than the old 4.0L so it was actually breaking the tires loose and promoting traction hope. Might be something to consider with your new 5.3

pook
November 12th, 2009, 04:21 pm
its an easy fix if I want to move the uppers up at the frame end. Even with the new motor, I'm not a throttle happy kind of driver, I prefer to crawl things if I can...so I'm hoping it'll work out.

DaveW
November 18th, 2009, 07:08 am
So when running a true 4 link front (full hydro set up) what are guys doing for link ends. Can you get away with rubber at one end or are you going to end up with too much play and need something stiffer?

pook
November 18th, 2009, 03:47 pm
Hiems at every end. I think bushing will have to much give in the front suspension for my liking. Probably not an issue if your running a panhard though.

DaveW
November 18th, 2009, 06:10 pm
No panhard. That's exactly what I was thinking in regards to the bushings.

rkjplt1
November 19th, 2009, 08:10 am
Go evolution joints. Heims only work good until you start breaking them.

SNORTclown
November 20th, 2009, 07:41 am
Go evolution joints. Heims only work good until you start breaking them.

Depends on Brand and style of heim. And in some apps there is not always enough room for that large of a link end.

rkjplt1
November 20th, 2009, 11:49 pm
There's always room on any buggy for quality. My Small evo's don't take up much more room than a 3/4" heim.

TonkaToyKiller
November 21st, 2009, 07:00 am
Dave. Let me know what hiems you need. I'll get ya hooked up. What are you doing for your steering? Do you have my old ram? What joints do you need for that as well?

The through hole can be changed to fit your needs. As well the aluminum joints are not available to the public yet.

Info for you

LARGE

Large body 3/4 inch hole
Material 4140 HTSR
Ball diameter 1.75"
Body width 1.625"
Body diameter 3.24"
Shank diameter 1 1/4
Thread length is 2.875"
Overall length is 6.267" (tip to tip)
Center of bolt hole to shank tip is 4.647"

LARGE 1-1/4" 12TPI thread with 3/4" bolt hole - 28 degrees

Mass without bungs or nut is 4.2 lbs


MED

Medium body 3/4 hole
Material 4140 HTSR
Ball diameter 1 3/8
Body width 1 1/4
Body diameter 2 3/4
Shank diameter 1 or 1 1/4
Thread length is 2 3/8
Overall length is 5 1/4 (tip to tip)
Center of bolt hole to shank tip is 3 13/16\

MEDIUM 1-1/4" & 1" thread with 5/8" bolthole - 28 degrees


SMALL

Small Body 3/4 hole
Material 4140 HTSR
Ball diameter 1 3/16
Body width 1
Body diameter 2 1/4
Shank diameter 3/4 (7/8 and 5/8 not regularly stocked)
Thread length is 2 3/8
Overall length is 4 7/8 (tip to tip)
Center of bolt hole to shank tip 3 3/4

SMALL 3/4" & 7/8" thread with 3/4" bolt hole - 28 degrees


FRANKENHEIM

Frankenheim body 1 1/4 or 1.0-inch hole
Material 4140 HTSR
Ball diameter 3.2
Body width 2.600
Body diameter 5.184
Shank diameter 2.0"
Thread length is 4.2 "
Overall length is 10.027" (tip to tip)
Center of bolt hole to shank tip is 7.435"
Width of Ball across flats is 2.800"

Weight Assembled without bung or nut is approximately 17lbs

Franken hiem next to a large.

DaveW
November 21st, 2009, 11:15 am
Small with 7/8 shank I believe (whatever Curty is running). Looking for 8 but 4 would work as well.

PM or e-mail me a price.

Hydro set up has the ends with it still.

TonkaToyKiller
November 22nd, 2009, 06:55 am
Small with 7/8 shank I believe (whatever Curty is running). Looking for 8 but 4 would work as well.

PM or e-mail me a price.

Hydro set up has the ends with it still.

Only 8? Not 16??
small 7/8" with 5/8" bolt hole?

rkjplt1
November 22nd, 2009, 03:22 pm
Only 8? Not 16??
small 7/8" with 5/8" bolt hole?

I need 8 more, worse than he needs 16. :cwm30:

He can have my old crap. :redneck

DaveW
November 23rd, 2009, 09:06 am
Yes if that is what Curty has.

I wasn't going to get gready. 16 would be good but I'm stealing my 4 link from my old truck so am only going to need 8 for now.