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Hellwig tubular anti-sway bar #791750 09/03/10 04:46 PM 09/03/10 04:46 PM
Joined: Jan 2003 Posts: 30,994 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,994 Oregon	Just got one the other day. This one is for a 73+ A-body. It is 1.125 diameter but only weighs 8 lbs. The 1.125 solid B-body bar that I have on hand weighs 18 lbs. It is a bit longer but still, there is a big difference. We're planning to put this bar on the '68 Valiant. That should be another 6 lbs off the nose of the car. Price on the bar is really fair considering how nice these are. All of the brackets and hardware are included. 6175978-hellwig.jpg (251 downloads)

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791751 09/03/10 05:29 PM 09/03/10 05:29 PM
Joined: Nov 2004 Posts: 1,708 S. Il. U.S.A. 5spdcuda top fuel
5spdcuda top fuel Joined: Nov 2004 Posts: 1,708 S. Il. U.S.A.	Thanks for the info Andy. I have a 1.125 Addco solid bar on the Cuda now and yes it is heavy. One of my friends had a solid Hellwig bar on his car and it appears to me to be a better fit ie. curved more like the factory bars.

Re: Hellwig tubular anti-sway bar [Re: 5spdcuda] #791752 09/03/10 07:20 PM 09/03/10 07:20 PM
Joined: Oct 2005 Posts: 4,941 WI Dcuda69 master
Dcuda69 master Joined: Oct 2005 Posts: 4,941 WI	I put a Hellwig rear bar on my 69 B'cuda last spring. Great fit,great customer service!!! I'll be putting their big bar on the front next spring

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791753 09/04/10 02:08 AM 09/04/10 02:08 AM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	I used to be a Camaro guy until I bought my Charger in March 2000. Tubular sway bars were first becoming popular then.(Maybe even before?) I have yet to understand how a hollow tube can be as effective as anything solid. I am not saying that it isnt possible, but I would like it if anyone could offer an easy to grasp explanation.

Re: Hellwig tubular anti-sway bar [Re: Kern Dog] #791754 09/04/10 02:16 AM 09/04/10 02:16 AM
Joined: Jan 2004 Posts: 27,347 Today? Who Knows? 1_WILD_RT Management Trainee
1_WILD_RT Management Trainee Joined: Jan 2004 Posts: 27,347 Today? Who Knows?	All of the resistance to twist is in the outer surface area of the bar... The metal in the center offers little resistance & extra weight..

Re: Hellwig tubular anti-sway bar [Re: 1_WILD_RT] #791755 09/04/10 03:01 AM 09/04/10 03:01 AM
Joined: Dec 2003 Posts: 22,695 Bitopia J jcc If you can't dazzle em with diamonds..
jcc If you can't dazzle em with diamonds.. J Joined: Dec 2003 Posts: 22,695 Bitopia	Quote: All of the resistance to twist is in the outer surface area of the bar... The metal in the center offers little resistance & extra weight.. To be more precise, if the interior space on the bar is say 7/8", one could deduct the rating of a 7/8" solid bar from rating of a larger diameter solid bar to reach the new rating of a tubular bar. It is not as maybe implied above that all the resistance to twist is on the outer surface, it is that the outer surface on any object is more resistant/effective to resist twist then the interior. Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.

Re: Hellwig tubular anti-sway bar [Re: jcc] #791756 09/04/10 03:14 AM 09/04/10 03:14 AM
Joined: Feb 2010 Posts: 18,493 Granite Bay CA Kern Dog Striving for excellence
Kern Dog Striving for excellence Joined: Feb 2010 Posts: 18,493 Granite Bay CA	Wow. That last response was not all that easy to follow. Thanks anyway.

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791757 09/04/10 03:38 AM 09/04/10 03:38 AM
Joined: Jan 2003 Posts: 27,453 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,453 So Cal	Quote: Just got one the other day. This one is for a 73+ A-body. It is 1.125 diameter but only weighs 8 lbs. The 1.125 solid B-body bar that I have on hand weighs 18 lbs. It is a bit longer but still, there is a big difference. We're planning to put this bar on the '68 Valiant. That should be another 6 lbs off the nose of the car. Price on the bar is really fair considering how nice these are. All of the brackets and hardware are included. Tell me how well we got it to fit. Took four trys, but I was happy with the end fit. My measurements on a just a shipping scale Factory 7/8" Solid Sway Bar 7 lbs Addco 1 1/8" Solid Sway Bar 13 1/2 lbs Hellwig Hollow 1 1/8" Sway Bar 7 3/4 lbs Hellwig Hollow 1 1/4" Sway Bar 8 3/4 lbs You'll notice the center is not exactly curved like original. That is because it is a thicker bar and it will hit the K-member if you just make the factory bar "thicker". And it wouldn't be a bad idea for someone to give it some extra room just in case if someone wanted an even bigger diameter bar. 6176926-CopyofPICT0709.JPG (202 downloads) Last edited by autoxcuda; 09/04/10 03:46 AM.

Re: Hellwig tubular anti-sway bar [Re: Kern Dog] #791758 09/04/10 04:47 AM 09/04/10 04:47 AM
Joined: Sep 2003 Posts: 1,168 Vancouver, WA MoparMarq super stock
MoparMarq super stock Joined: Sep 2003 Posts: 1,168 Vancouver, WA	You got me interested in some college history. The formula for torque for a rod of circular cross-section is 1/2pistressR(cubed). Where stress is the strength of the material the rod is made of. I used 80,000 psi for the calcs, but it doesn't matter. R is the radius of the rod. For a hollow rod, it is simply 1/2pistress(R(cubed)-r(cubed)). R is the outer radius, r is the inner radius. A 7/8" diameter solid bar yields the same torque capability (876 foot-pounds, in this case) as a 1.25" bar with a .543 inner radius (1.086 inner diameter). Or stated another way, equal to a 1.25" hollow tube of wall thickness .082". Interestingly, the hollow tube has a cross-section area of .3009 square inches. The solid bar has a cross-section area of .6013 square inches. Assuming the same length bars and ends (a bit of a stretch), the hollow bar would be almost 50% lighter.

Re: Hellwig tubular anti-sway bar [Re: MoparMarq] #791759 09/04/10 01:21 PM 09/04/10 01:21 PM
Joined: Jan 2003 Posts: 30,994 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,994 Oregon	Hollow torsion bars would be a nice product but they are tough to make.

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791760 09/04/10 01:43 PM 09/04/10 01:43 PM
Joined: Jan 2010 Posts: 157 hawaii P pauly v.100 member
pauly v.100 member P Joined: Jan 2010 Posts: 157 hawaii

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791761 09/04/10 05:55 PM 09/04/10 05:55 PM
Joined: Jan 2003 Posts: 27,453 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,453 So Cal	Quote: Hollow torsion bars would be a nice product but they are tough to make. I remember a place called Sparks out of New York said they would make hollow T-bars. That place also claimed to be selling Kit Car Plans. Anyone remember that place. Advertised in Mopar Action I think. They make gun drilled axles, so T-bars are possible. Just how much money you want to spend. I think there are hollow T-bars for Sprint Car on the market. Last edited by autoxcuda; 09/05/10 12:47 PM.

Re: Hellwig tubular anti-sway bar [Re: autoxcuda] #791762 09/04/10 11:11 PM 09/04/10 11:11 PM
Joined: Jan 2003 Posts: 2,042 MD RTSE4ME top fuel
RTSE4ME top fuel Joined: Jan 2003 Posts: 2,042 MD	I think I still have some hollow torsion bars made by Schroeder for a midget....been sitting in my basement for years. Had a midget that ran rear torsion bars and a coil-over front.

Re: Hellwig tubular anti-sway bar [Re: autoxcuda] #791763 10/11/10 01:40 AM 10/11/10 01:40 AM
Joined: Jan 2003 Posts: 30,994 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,994 Oregon	I finally got the car back up in the air and did the install. The engine is out waiting for a new oil pan so it was a good time to install the new Hellwig anti-sway bar. I made my own end link spacers from 1 inch aluminum bar stock. The large diameter spacers will stiffen up the bar a little bit. 6244046-hellwig.jpg (201 downloads)

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791764 10/11/10 04:53 AM 10/11/10 04:53 AM
Joined: Jan 2003 Posts: 27,453 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,453 So Cal	Quote: I finally got the car back up in the air and did the install. The engine is out waiting for a new oil pan so it was a good time to install the new Hellwig anti-sway bar. I made my own end link spacers from 1 inch aluminum bar stock. The large diameter spacers will stiffen up the bar a little bit. Andy how did you like the fit inside the K-member? I really tried and pushed to get it centered in there because I know a lot of K-members get crushed making it even tighter. BTW are you getting one of those new Milodon SB Road Race baffled pans? I told Steve how your Charlies pan lost oil pressure just after you came back from PIR testing. I thought one was going up there.

Re: Hellwig tubular anti-sway bar [Re: autoxcuda] #791765 10/11/10 11:42 AM 10/11/10 11:42 AM
Joined: Jan 2003 Posts: 30,994 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,994 Oregon	We're supposed to be getting one of the Milodon pans but it hasn't arrived yet.

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791766 10/11/10 03:02 PM 10/11/10 03:02 PM
Joined: Jan 2003 Posts: 27,453 So Cal autoxcuda Too Many Posts
autoxcuda Too Many Posts Joined: Jan 2003 Posts: 27,453 So Cal	Andy how was the installed clearance inside/thru the K-member on Tim's car?

Re: Hellwig tubular anti-sway bar [Re: autoxcuda] #791767 10/11/10 04:01 PM 10/11/10 04:01 PM
Joined: Jan 2003 Posts: 30,994 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,994 Oregon	Clearance was fine. I tweaked the mounts a little bit to get things right where I wanted it.

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791768 11/04/10 02:04 AM 11/04/10 02:04 AM
Joined: Jan 2003 Posts: 30,994 Oregon A AndyF OP I Win
AndyF OP I Win A Joined: Jan 2003 Posts: 30,994 Oregon	Here is another installed picture. Shows some of the other details. 6284345-front.jpg (220 downloads)

Re: Hellwig tubular anti-sway bar [Re: AndyF] #791769 11/04/10 07:43 AM 11/04/10 07:43 AM
Joined: Jan 2003 Posts: 2,521 Richmond Va, KeislerTKO 60... V VanishPt master
VanishPt master V Joined: Jan 2003 Posts: 2,521 Richmond Va, KeislerTKO 60...	Andy, IF you had to mount the bar 1.5" lower( on the bottom of the Kframe instead of through it)-using 1.5" square tubing instead of the flat 1/4" plate supplied--- do you see any drawback? I do not think ground clarance would be an issue as my oil pan is the low point. It does look like it would interfrere with the "Jacking" point on the bottom of the k frame.

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