need new style swaybar pics

tyndago

New member
Weird...

Every ST bar I have seen goes under the axle .

The ATR bar went on top of the axle . I hated my ATR beat on the body. Pissed me off enough to take it off.

As far as unsprung weight goes..... with a solid axle.... what difference is a bar going to make ?

Hollow bars would be the way to go.... and independent rear.... and.... ok I will shut up now..
 

Daron

Active member
Not sure about the ST squeeks in Keiths truck, but I havent encountered that problem with an ST installed below the axle.

I dont have any allegience to ST or ADDCO, I just know one is destined to bang on the springs on trucks using lowered springs, and one isnt. Believe me, if I could get the addco to work, the one that used to be on my Ty wouldnt be sitting in the shed. I worked with the folks at ADDCO to try and resolve the spring contact issues, their answer was endlinks. ..

Anyway, for those with the ADDCO bar now, I suggest trying your new lowering springs with the addco and monitor whether they contact or not. For those considering buying a bar, and may try lowering the truck via lowering springs in the future, I wouldnt go with the ADDCO. Just my experience, not neccessarily all inclusive.
The picture below is the ADDCO installed with stock springs. Imagine lowering springs and one person in the back of the Ty...

pic_28.jpg


Here is another angle..
pic_30.jpg
 

Tydriver

TurboLS6 Powa'
Daron I think that I know why yours hits. Because the holes you used in the frame are NOT the same as I used. I mounted my bar so that the holes spacing over the rivets were ONE HOLE aft, in effect this does 2 things.
It straightens out the end links (instead of being tilted in your pictures) and it also allows for additional clearance between the spring and the bar. On my truck I put the forward most bolt of the sway bar bushing attatch fittings where you have your AFT bolt and stradled the AFT rivet that is just behind the bracket in the pictures you show (I am going off memory here, but I think that is how my truck is setup). It should straighten up the end links and allow for more clearance. I know for sure my bar isnt anywhere near as close as yours is in that picture. I still hold by my original argument however on the mounting to the frame vs the axle assy. I wouldnt ever install an ST on my truck. I have the same loyalties as you do (NONE) just cant see installing a product that not only lowers ground clearance, but also increases unpsrung weight and makes it difficult to jack the rear housing (the ST bar does all that :-( )

Perhaps the redesign of the ADDCO bar addressed the issue shown in your pictures, shortening up the bar or changing its length to accomodate the change in mount points ? Perhaps the directions were the only thing changed I dunno.. All I know is, I'm about 97.8% sure my bar mounts in a different location than the one pictured. (too late to go crawl under it and check) but would be very interesting to lay the bars next to each other sometime and see the difference. Maybe at the next Ohio meet ?
Just my $.02 not that its worth anything....
 

Captain Morgan

Moderated User
Tydriver said:
I'm about 97.8% sure my bar mounts in a different location than the one pictured.

well I can confirm the other 2.2% that Todd is correct. Not only was I on the same Addco GP as him, but my bar is also mounted in the same location as his. The backing plate which bolts to the frame has a hole in the center of it for the purpose of going around the rivet in the frame. One hole drilled above and one below.

In fact, the only problem I had with installing my bar is a little interference between the bottom of the endlink bolt and the 11" ZR1's. This was solved by using the actual U-bolt nuts to hold the plate on instead of using the provided nuts and stacking everything. Im sure this changed the geometry of things a little bit, but I couldnt see any other way to get around it.
 

canadian

sy in progress
Tydriver said:
I understand what you are saying but being 'In the Biz' you also oughta understand the benefits of mounting the bar to the frame VS anywhere on the axle, ABOVE OR BELOW IT. When its bolted to the axle its becoming part of the UNSPRUNG weight, which as most performance places mention is BAD. Adding to the UNSPRUNG weight affects: Handling and Ride quality. If you have any input as to the design of this bar you may want to consider something that allows for it to be mounted to the FRAME not to the axle. Unsprung wieght is soo important with performance vehicles, thats partly the reason GM installed Magnesium wheels on the Z06, to help with unsprung weight.

i can understand the concept behind lighter wheels (static weight vs. rotational weight... or is it mass?), but i don't follow when it comes to sway bar mounting points. is it because the axle travels up and down vs the frame being static? and can the difference be *that* dramatic?

what i'm looking for is good handling (as good as it can get in a truck) with very little body roll. now here's a question... look at the pics daron posted and check the length of that bolt on the endlink. if the rear were to shift that dramatically, would it not be easier to bend a longer bolt than a shorter one?

now check out the new style gm end links. click for full sized image





just hope they work with the drop springs. with my luck they won't :roll:
 

Tydriver

TurboLS6 Powa'
canadian said:
i can understand the concept behind lighter wheels (static weight vs. rotational weight... or is it mass?), but i don't follow when it comes to sway bar mounting points. is it because the axle travels up and down vs the frame being static? and can the difference be *that* dramatic?

Unsprung weight is anything that is BELOW the springs, wheels have an effect on this, as do other things such as axle size, tire size etc.

When you increase UNSPRUNG weight it has a larger effect on the ride quality of the vehicle. If you add additional weight to the axle its going to have more UPWARD motion when hitting a hole and rebounding from that hole. When it comes upward its going to UPSET the vehicle more. Do a search for UNSPRUNG WEIGHT and possibly its posted somewhere or there is an article somewhere that explains it better to you than I have. I know its a bad thing and I understand WHY its bad I just cant explain it to you.

Unsprung weight is one of the reasons that most performance cars are NOT solid axle cars, IRS suspended cars not only handle better but they are also less prone to being upset because of the less unsprung weight. Notice the C5's, the Cobra's etc are IRS cars.

In your post you refer to ROTATIONAL MASS, I agree that also has an effect on performance and handling but its not the same as unsprung weight. The concept is completely different.

Since the weight of the ST bar (and all its mounting hardware) is being supported by the axle assembly its adding to the UNSPRUNG WEIGHT of the axle assy. Where as the ADDCO Bar is supported by the frame rails of the vehicle its considered 'SPRUNG WEIGHT' basically anything thats ABOVE the springs.. Make sense ?? Prolly not coz I did such a crappy job 'splaining it.
Sorry man, maybe someone else could chime in and explain it better.
 
My Addco bar isnt bolted up like the picture posted by Daron. But that was also on a Ty, anyone have a picture of the install on there Syclone?? By the way my bar is from the latest GP from Lewis and it contacts with lowered leafs(if I have it installed correctly :-? . Fern Sy#477
 

CheshireC

Member
Off topic slightly..

I spoke with Russ Bland a while ago, he sold his Syclone and bought a BMWm3 with paddle shift gears.....(why????) but hes happy
 

Tydriver

TurboLS6 Powa'
truckins10 said:
My Addco bar isnt bolted up like the picture posted by Daron. But that was also on a Ty, anyone have a picture of the install on there Syclone?? By the way my bar is from the latest GP from Lewis and it contacts with lowered leafs(if I have it installed correctly :-? . Fern Sy#477

AARGHHHHHHHHHHH !!!!!!!!!!!!!!!!!
 

Daron

Active member
That was not my ty, it was someones from NWSTP who installed it in accordance with the instructions you posted:
addco.jpg


They still want you to use the Rivet as a reference, whether its the old one or new. Moving the mounting points up would solve the end link angle issue but I am convinced the bar would still contact the springs. Addtionally, when I attempted to move the mounting point toward the rear (up), it made the endlinks contact the axle. This may be the difference between old and new, shorter arm from frame mount to endlink, allowing you to mount the bar more towards the rear. Though this would counter what I was told be ADDCO.

How about some pics of yours or Morgan's installed, with normal weight on the springs?
 

Daron

Active member
Tydriver said:
truckins10 said:
My Addco bar isnt bolted up like the picture posted by Daron. But that was also on a Ty, anyone have a picture of the install on there Syclone?? By the way my bar is from the latest GP from Lewis and it contacts with lowered leafs(if I have it installed correctly :-? . Fern Sy#477

AARGHHHHHHHHHHH !!!!!!!!!!!!!!!!!

I hadnt heard the ADDCO bar for the Syclone contacted lowered leafs since I havent dealt with them in that application. How do you have it installed?
 
Like I said the instruction pictures were terrible so its possible I might have installed it wrong??? Bassically the end links point to the front of the truck. There are brackets that come down from the frame that have a hole in the center, this is where I bolted the endlink bolt to. This is between the top front of the leaf spring and the frame. Then the bar goes underneight the rear end and is bolted to the axel tubes on either side of the differential. Sound right?? Fern Sy#477
 

Syborg Twin Turbo

Syborg Twin Turbo
going back to the original question. I have an extra Hotchkis rear sway bar kit. Man was that thing expensive. If you would like i could see if it would fit on the marlboro syclone. If it does i would be more then happy to sell it to anyone interested.
 

turbodog

Donating Member
FWIW... I have the later-model Addco, mounted per the instruction sheet posted earlier, on a Ty with lowered springs, and there is no interference problem.
 

Tydriver

TurboLS6 Powa'
turbodog said:
FWIW... I have the later-model Addco, mounted per the instruction sheet posted earlier, on a Ty with lowered springs, and there is no interference problem.

THERE IS A GOD !
 

Daron

Active member
Tydriver said:
turbodog said:
FWIW... I have the later-model Addco, mounted per the instruction sheet posted earlier, on a Ty with lowered springs, and there is no interference problem.

THERE IS A GOD !

Oh?

I am wondering what springs you are using Turbodog. Got any pics of the install of the newer addco on a truck with lowering springs, anyone? Bueller?
 

Daron

Active member
ed hess said:
Thanks Ed,
What is your opinion on this setup on your truck?
Image028_001.jpg


I wonder if Fern would benefit from seeing your install on your Syclone, Ed. MAybe he can see if his is installed incorrectly, though it wouldnt surprise me if the Syclone addco bar had contact issues on lowered leaf spring clad trucks. I sure dont like the endlink placement.

I'd like to see similar shots of one on a Typhoon.
Take care,
Daron
 

canadian

sy in progress
fwiw, when i had the old style addco with lowering blocks, the bolt head kept coming down and making contact with the e-brake cable sheathing, eventually cutting through it. might want to check and see if yours is making any sort of contact there.
 

ed hess

race or get outta the way
I can tell you the end links were a pia to do!

Just figureing out where to put the holes in the frame as the oem hole will not work!!! even thougth the directions say to use them.

the problem was the end links are just a hair to short, so once you insert into the hole youneed to allmost compress the bushing as you try to thread the nut on. By yourself it is ver difficult and frustrating.

However this did stiffen up the rear. andit does help limit the downwrd movement of the rear. Harry had me add this to help with my trction problem along with the adjustable ranchos. It did help.
As for cornering. beats me! But it problem does help some.

Fwiw i get some side to side movement and i had to hammer the loer 1 inch of the bed inside as the sidewalls of the 315's would just barley rub.

I saw someone had a bar that went from I think the drivers side rear front frame to the pass spring mount on the rear housing. Might have been myclone.

I dont know what this is called or how it works if anyone can add any info here?


ed
 
Top