PanHard Mod? - Pirate4x4.Com : 4x4 and Off-Road Forum

WBDISCO · 09-16-2002, 09:54 AM

It is my understanding that the panhard rod controls the up and down movement of the front axle (correct me if I am wrong). Could lengthening or moving the mounting increase front axle drop, in conjuction with modified radius arms? Has anyone ever removed it? Just a few base questions before i continue on with some front end mods. Peace

Brad (not tall Brad)

redrangie · 09-16-2002, 10:01 AM

Quote:

Originally posted by WBDISCO
It is my understanding that the panhard rod controls the up and down movement of the front axle (correct me if I am wrong).
Brad (not tall Brad)

The purpose of a PHB on a live axle car is to center the differential/rear under the car. The PHB mounts to a fixed location on the chassis/frame above the differential/rear and attaches to the differential using rubber bushings at both ends.

j

green rover · 09-16-2002, 10:11 AM

DO NOT REMOVE AND TRY TO DRIVE ON THE ROAD.

when removed it makes it verry hard to steer

even with modified radius arms (off set arms) they will still be your limiting factor

Drew

RockRover · 09-16-2002, 11:05 AM

Don't listen to Green Rover. Remove the thing and see what happens! Make sure you have your friends doing some video as you go around the first turn...O' and make sure your on a deserted street!.

Kidding.

IMO, learn just a tinny little bit more about how your suspension works prior to asking a question like that (much less attempting a mod).

--D

lew · 09-16-2002, 05:36 PM

With a three link front would you need a panhard rod? would the middle link center the axle?

FrankenRover · 09-16-2002, 05:46 PM

It would sorta work, but the side to side stability would chew right into the center link poly's, and you would have some side to side motion with this setup.

Billster

redrangie · 09-16-2002, 06:54 PM

Rockrover:

Clean out your pm box dude.
j

lew · 09-16-2002, 07:55 PM

Thanks I guess there is a lot more side to side force on a front axle compared to a rear due to steering

RockRover · 09-16-2002, 08:05 PM

Quote:

Originally posted by redrangie
Rockrover:

Clean out your pm box dude.
j

It's been clean! More so now though...Try again.

--D

RockRover · 09-16-2002, 08:12 PM

Puuuuleaze...This has got to be the STOOPEDEST thread I've seen in...Well...Ever!

The pan-hard does NOTHING more than locate the axle latteraly....The only disadvantage to having one is the side to side movement when the axle drops out vertically...And even that's minimal. It has NOTHING to do with articulation, max droop etc. If you want to try it go for it...Just don't do it were anyone is going to get hurt.

Steering has nothing to do with why the pan-hard is there either. Look at your rear suspension...It's a 3-link (wish-bone) configuration. The axle CAN'T move latteraly because the link is triangulated. Now look at the front. See any triangulation? Nope. The axle is free to move laterally all it want's too. W/O the pan-hard the axle would probably move 6+" left or right depending on load...You would tweak your radius arm mounts, and probably loose a u-joint (drive-line) in the process...

Yea...Go for it. Then let us all know how much more articulation you get.

--D

Puffdragon · 09-17-2002, 08:36 AM

the panhard rod is by all means necessary in locating the front axle, and very much reduces travel on one side of the axle.
Basically, your steering will be so delayed by the axle moving side to side, you could not control the truck while turning at speeds above 15 mph. try taking off your track rod (panhard rod), and steer while the truck is sitting still. the axle will move far more than you think, and any movement is not good minus bushing give.. As for travel, it reduces the travel of the passenger side (or the driver side on your suspension doug due to changing the frame mount to the other side). Most trucks can force the travel anyway. when doing a lift on a stock jeep, the Driver side spring drops in, but the passenger side has to be pryed in, but if you remove the track rod, the passenger side spring goes in just like the driver side.

Note you can drive a coil sprung truck without a track rod, but you must drive well under 5mph, a leaf sprung truck with a removed track rod is a different beast, and can be driven at top speed.

by all means follow Dougs suggestion learn more about your suspension before you go tinkering with stuff, but at least you got help first this time.

save your skin, and keep that track rod on the truck.
P.S. the SG 3 link will not hold without a track rod.

K.C. Carpenter

redrangie · 09-17-2002, 08:47 AM

Quote:

Originally posted by Puffdragon
P.S. the SG 3 link will not hold without a track rod.

K.C. Carpenter

And with a prb/track rod, it still FEELS loose to me......

j

RockRover · 09-17-2002, 09:38 AM

Quote:

Originally posted by redrangie

a prb/track rod,

j

09-16-2002, 09:54 AM	#1 (permalink)
WBDISCO Registered User Join Date: Jun 2002 Member # 12313 Location: S. Pittsburg, TN Posts: 354	PanHard Mod? It is my understanding that the panhard rod controls the up and down movement of the front axle (correct me if I am wrong). Could lengthening or moving the mounting increase front axle drop, in conjuction with modified radius arms? Has anyone ever removed it? Just a few base questions before i continue on with some front end mods. Peace Brad (not tall Brad) __________________ It don't have to look good, we ain't building a Rolex. 1996 Disco on 35s 1982 Yota Pickup on 35s (I did a bad thing)

09-16-2002, 11:05 AM	#4 (permalink)
RockRover Rock God Join Date: Apr 2001 Member # 4101 Location: Santa Fe Posts: 2,232	Don't listen to Green Rover. Remove the thing and see what happens! Make sure you have your friends doing some video as you go around the first turn...O' and make sure your on a deserted street!. Kidding. IMO, learn just a tinny little bit more about how your suspension works prior to asking a question like that (much less attempting a mod). --D __________________ Hendrix 'X' Chassis #006 http://www.hunt4steve.com/Doug.html

09-16-2002, 06:54 PM	#7 (permalink)
redrangie Registered User Join Date: Apr 2002 Member # 11072 Location: Denver, CO Posts: 2,043	Rockrover: Clean out your pm box dude. j __________________ forgings design dot com metal furniture \| fabrication \| decor new \| rustic \| recycled

09-16-2002, 08:12 PM	#10 (permalink)
RockRover Rock God Join Date: Apr 2001 Member # 4101 Location: Santa Fe Posts: 2,232	Puuuuleaze...This has got to be the STOOPEDEST thread I've seen in...Well...Ever! The pan-hard does NOTHING more than locate the axle latteraly....The only disadvantage to having one is the side to side movement when the axle drops out vertically...And even that's minimal. It has NOTHING to do with articulation, max droop etc. If you want to try it go for it...Just don't do it were anyone is going to get hurt. Steering has nothing to do with why the pan-hard is there either. Look at your rear suspension...It's a 3-link (wish-bone) configuration. The axle CAN'T move latteraly because the link is triangulated. Now look at the front. See any triangulation? Nope. The axle is free to move laterally all it want's too. W/O the pan-hard the axle would probably move 6+" left or right depending on load...You would tweak your radius arm mounts, and probably loose a u-joint (drive-line) in the process... Yea...Go for it. Then let us all know how much more articulation you get. --D __________________ Hendrix 'X' Chassis #006 http://www.hunt4steve.com/Doug.html

09-17-2002, 08:36 AM	#11 (permalink)
Puffdragon Registered User Join Date: Sep 2002 Member # 13683 Location: Unknown Posts: 3,188	the panhard rod is by all means necessary in locating the front axle, and very much reduces travel on one side of the axle. Basically, your steering will be so delayed by the axle moving side to side, you could not control the truck while turning at speeds above 15 mph. try taking off your track rod (panhard rod), and steer while the truck is sitting still. the axle will move far more than you think, and any movement is not good minus bushing give.. As for travel, it reduces the travel of the passenger side (or the driver side on your suspension doug due to changing the frame mount to the other side). Most trucks can force the travel anyway. when doing a lift on a stock jeep, the Driver side spring drops in, but the passenger side has to be pryed in, but if you remove the track rod, the passenger side spring goes in just like the driver side. Note you can drive a coil sprung truck without a track rod, but you must drive well under 5mph, a leaf sprung truck with a removed track rod is a different beast, and can be driven at top speed. by all means follow Dougs suggestion learn more about your suspension before you go tinkering with stuff, but at least you got help first this time. save your skin, and keep that track rod on the truck. P.S. the SG 3 link will not hold without a track rod. K.C. Carpenter __________________ K.C.

09-16-2002, 10:11 AM	#3 (permalink)
green rover Registered User Join Date: Jul 2002 Member # 12718 Posts: 89	DO NOT REMOVE AND TRY TO DRIVE ON THE ROAD. when removed it makes it verry hard to steer even with modified radius arms (off set arms) they will still be your limiting factor Drew

09-16-2002, 05:36 PM	#5 (permalink)
lew Registered User Join Date: Jan 2002 Member # 9081 Location: or Posts: 130	With a three link front would you need a panhard rod? would the middle link center the axle?

09-16-2002, 05:46 PM	#6 (permalink)
FrankenRover Registered - Active Join Date: Jan 2002 Member # 9461 Location: Albuquerque, NM Posts: 1,763	It would sorta work, but the side to side stability would chew right into the center link poly's, and you would have some side to side motion with this setup. Billster

09-16-2002, 07:55 PM	#8 (permalink)
lew Registered User Join Date: Jan 2002 Member # 9081 Location: or Posts: 130	Thanks I guess there is a lot more side to side force on a front axle compared to a rear due to steering

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