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Re: Sub frame connectors [Re: 68cuda440] #1714719 12/28/14 09:01 PM 12/28/14 09:01 PM
Joined: Nov 2003 Posts: 3,039 GA roadrunninMark master
roadrunninMark master Joined: Nov 2003 Posts: 3,039 GA	Would bolt on aluminum work as well instead of steel? I know they can be heavy, was thinking if you were going to make them, what about aluminum?

Re: Sub frame connectors [Re: roadrunninMark] #1714720 12/28/14 09:33 PM 12/28/14 09:33 PM
Joined: Dec 2010 Posts: 12,375 SoCal MuuMuu101 I got lucky at Woodward!
MuuMuu101 I got lucky at Woodward! Joined: Dec 2010 Posts: 12,375 SoCal	Quote: Would bolt on aluminum work as well instead of steel? I know they can be heavy, was thinking if you were going to make them, what about aluminum? You could but for the same size tubing, you'll have a subframe connector that is about half as weak (depending how the metal is prepped). Not only that, but generally aluminum cost more than steel. Even butting to dissimilar metals next to each other is generally not preferred.

Re: Sub frame connectors [Re: roadrunninMark] #1714721 12/29/14 12:04 AM 12/29/14 12:04 AM
Joined: Dec 2003 Posts: 23,554 Here J jcc No soup for you!!!
jcc No soup for you!!! J Joined: Dec 2003 Posts: 23,554 Here	Quote: Would bolt on aluminum work as well instead of steel? I know they can be heavy, was thinking if you were going to make them, what about aluminum? I'm counting the days until we start hearing reports about fatigue cracks in the now defunct XV welded K frames. Enough said. I'm with Helmuth Hübener, and no soup is being served today.

Re: Sub frame connectors [Re: jcc] #1714722 01/02/15 06:25 PM 01/02/15 06:25 PM
Joined: May 2007 Posts: 952 Queens, N. Y. FASTBACK340 super stock
FASTBACK340 super stock Joined: May 2007 Posts: 952 Queens, N. Y.	Quote: Quote: Would bolt on aluminum work as well instead of steel? I know they can be heavy, was thinking if you were going to make them, what about aluminum? I'm counting the days until we start hearing reports about fatigue cracks in the now defunct XV welded K frames. Enough said. I work with high-performance aftermarket parts daily and the range of quality reminds me of my Dune Buggy days in the 80's. Can't believe what people try to sell and what people continue to buy. `68 Barracuda 340-S

Re: Sub frame connectors [Re: FASTBACK340] #1714723 01/06/15 04:41 PM 01/06/15 04:41 PM
Joined: Mar 2014 Posts: 235 Oregon D Dr Dave OP enthusiast
Dr Dave OP enthusiast D Joined: Mar 2014 Posts: 235 Oregon	I have decided to go ahead with the fully welded to the floor pan style and repaint the bottom. I'm sure I will be much happier and what the heck, it's only $$! Thanks for everyone's input.

Re: Sub frame connectors [Re: Dr Dave] #1714724 02/25/15 10:39 PM 02/25/15 10:39 PM
Joined: Jan 2004 Posts: 6,445 Missouri 68KillerBee master
68KillerBee master Joined: Jan 2004 Posts: 6,445 Missouri	Hotchkis set showed up today, it will be a while before thereoj

Re: Sub frame connectors [Re: TC@HP2] #1714725 02/26/15 12:51 AM 02/26/15 12:51 AM
Joined: Oct 2005 Posts: 5,025 WI Dcuda69 master
Dcuda69 master Joined: Oct 2005 Posts: 5,025 WI	Quote: Mopars are so bendy by this stage of their life that even simple 1x3 units welded to just the front and rear sub frames are a HUGE improvement over nothing. Are they the ultimate, no, but they are a big step in the right direction. Quite worrying about it and put them in. This guy gets it. I spent $50 on materials and a couple hours making it fit(I am by NO means a fabricator)and they made $500 difference! Don't over think it...tie them together and done!! You'll be glad you did!

Re: Sub frame connectors [Re: FASTBACK340] #1714726 02/26/15 04:17 PM 02/26/15 04:17 PM
Joined: Jan 2011 Posts: 4,785 Utah and Alaska astjp2 master
astjp2 master Joined: Jan 2011 Posts: 4,785 Utah and Alaska	People can afford to DRIVE an XV car? Quote: Quote: Quote: Would bolt on aluminum work as well instead of steel? I know they can be heavy, was thinking if you were going to make them, what about aluminum? I'm counting the days until we start hearing reports about fatigue cracks in the now defunct XV welded K frames. Enough said. I work with high-performance aftermarket parts daily and the range of quality reminds me of my Dune Buggy days in the 80's. Can't believe what people try to sell and what people continue to buy. 1941 Taylorcraft 1968 Charger 1994 Wrangler 1998 Wrangler 2008 Kia Rio 2017 Jetta I didn't do 4 years and 9 months of Graduate School to be called Mister!

Re: Sub frame connectors [Re: astjp2] #1714727 03/03/15 03:48 PM 03/03/15 03:48 PM
Joined: Jan 2003 Posts: 16,376 D dogdays I Live Here
dogdays I Live Here D Joined: Jan 2003 Posts: 16,376	Thing to remember about aluminum is NOT the tensile strength, it's the modulus of elasticity. That is another way of saying spring constant, if that helps explain. Aluminum has a modulus of elasticity of around 1/3 that of steel. That means for a given amount of stress, the aluminum will deflect three times as much as steel. So to get the same stiffness, the aluminum part has to be three times as thick or whatever dimension matters most. That partially negates the weight savings. This has nothing to do with strength, which is generally how much stress before permanent deformation. If using aluminum I'd be much more worried about how to get a decent weld than the effects of dissimilar metals on corrosion. R.

Re: Sub frame connectors [Re: dogdays] #1714728 03/04/15 01:51 AM 03/04/15 01:51 AM
Joined: Jul 2008 Posts: 240 Plano, Texas 6 68cuda440 enthusiast
68cuda440 enthusiast 6 Joined: Jul 2008 Posts: 240 Plano, Texas	Quote: If using aluminum I'd be much more worried about how to get a decent weld than the effects of dissimilar metals on corrosion. R. I would actually be more worried about life and fatigue. Steel is fairly straightforward. If you design the load below a given threshold the life is functionally infinite. Aluminum has no such threshold. That is why aluminum parts on air frames are replaced on a schedule. I have never designed with aluminum for service life (steel - yes), so maybe the Corvette engineers know something I do not. Just not so comfortable with an aftermarket aluminum frame. The life testing and level of vetting the OEMs do is not really attainable for aftermarket suppliers. Michael 1968 Barracuda Notchback Coupe 440 EFI 6-pack, T56 Magnum 6-spd

Re: Sub frame connectors [Re: 68cuda440] #1714729 03/04/15 03:40 AM 03/04/15 03:40 AM
Joined: May 2005 Posts: 166 Los Altos Hills, CA Dans 68 member
Dans 68 member Joined: May 2005 Posts: 166 Los Altos Hills, CA	Anybody try these? US Cartools Bolt in Sub Frame Connectors It looks intriguing, albeit pricy.... Dan Last edited by Dans 68; 03/04/15 03:42 AM.

Re: Sub frame connectors [Re: Dans 68] #1714730 03/04/15 09:10 AM 03/04/15 09:10 AM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Quote: Anybody try these? <a href="" target="_blank"></a> US Cartools Bolt in Sub Frame Connectors It looks intriguing, albeit pricy.... Dan Read this first https://board.moparts.org/ubbthreads/showflat.php?Number=7904856 They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Sub frame connectors [Re: Supercuda] #1714731 03/04/15 08:16 PM 03/04/15 08:16 PM
Joined: Nov 2004 Posts: 25,050 Texas GoodysGotaCuda 5.7L Hemi, 6spd
GoodysGotaCuda 5.7L Hemi, 6spd Joined: Nov 2004 Posts: 25,050 Texas	Quote: Quote: Anybody try these? <a href="" target="_blank"></a> US Cartools Bolt in Sub Frame Connectors It looks intriguing, albeit pricy.... Dan Read this first https://board.moparts.org/ubbthreads/showflat.php?Number=7904856 I've talked to them fairly recently and expressed concern about their previous history. I was assured things were on the up and up. With their eBay store and being able to pay with PayPal, buyers should be fairly covered going that route. Their Ebody chassis stiffening package is tempting..Chris Lewis is whom I was speaking with. 1972 Barracuda - 5.7L Hemi, T56 Magnum 6spd - https://www.facebook.com/GoodysGotaHemi 2020 RAM 1500 [img]https://i.imgur.com/v9yezP9.jpg[/img]

Re: Sub frame connectors [Re: GoodysGotaCuda] #1714732 03/04/15 08:21 PM 03/04/15 08:21 PM
Joined: Sep 2007 Posts: 14,889 up yours Supercuda About to go away
Supercuda About to go away Joined: Sep 2007 Posts: 14,889 up yours	Well, I dunno if they took care of the guy in the linked thread, but I felt the OP needed to know what he might be getting into. They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.

Re: Sub frame connectors [Re: Supercuda] #1714733 03/04/15 08:22 PM 03/04/15 08:22 PM
Joined: Nov 2004 Posts: 25,050 Texas GoodysGotaCuda 5.7L Hemi, 6spd
GoodysGotaCuda 5.7L Hemi, 6spd Joined: Nov 2004 Posts: 25,050 Texas	Quote: Well, I dunno if they took care of the guy in the linked thread, but I felt the OP needed to know what he might be getting into. Yep, no doubt. I haven't spent any money with them, so I can't say one way or the other. 1972 Barracuda - 5.7L Hemi, T56 Magnum 6spd - https://www.facebook.com/GoodysGotaHemi 2020 RAM 1500 [img]https://i.imgur.com/v9yezP9.jpg[/img]

Re: Sub frame connectors [Re: GoodysGotaCuda] #1714734 03/04/15 10:10 PM 03/04/15 10:10 PM
Joined: Jan 2003 Posts: 751 Saint Peters, MO B Brian super stock
Brian super stock B Joined: Jan 2003 Posts: 751 Saint Peters, MO	I've installed the entire chassis stiffening kit on my Duster. No issues with the purchase or installation. 1971 6.1 Gen III Hemi Duster

Re: Sub frame connectors [Re: GoodysGotaCuda] #1714735 03/20/15 07:47 PM 03/20/15 07:47 PM
Joined: Nov 2004 Posts: 25,050 Texas GoodysGotaCuda 5.7L Hemi, 6spd
GoodysGotaCuda 5.7L Hemi, 6spd Joined: Nov 2004 Posts: 25,050 Texas	Quote: Quote: Well, I dunno if they took care of the guy in the linked thread, but I felt the OP needed to know what he might be getting into. Yep, no doubt. I haven't spent any money with them, so I can't say one way or the other. Ordered Sunday, showed up today.

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