I remember a while back reading a thread somewhere of a cracked radius arm. It was one of those drilled radius arms with the holes running the length of the radius arm, possibly a QT? Does anyone have a picture or a link that they could share?
Picture of broken radius arm?
- Thread starter Mike_Rupp
- Start date
D
D Chapman
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D
D Chapman
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There is a back story to that ARM. Qt gave a set of those arms to 4x4AG as a store Demo. They sold the arms and surprise surprise they broke. Dave the owner of Qt had me ship out a set of replacement arms at no charge.
Why would someone possibly allow a "demo" set to be released so someone could install them on a truck. Convenient excuse.
Qt new there was a problem with these arms and AG was not suppose to sell them. The new design dose not have all the holes. Why the interest in the arm?
FIVESPDDISCO said:
A certain dingleberry said that they were stronger and lighter than stock and a picture is worth a thousand words.
I dont get the drilled holes part?
what are you doing reducing unsprung weight by a few grams?
clearly the material choice was bad as well, the factory arms are very ductile forged steel. hit one with a hammer some time it will leave a small mark.
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and yes dingleberry is a great description...LOL
I sent a rough drawing with dimensions and a buncha pics and a cad rendering to my buddy today to do a destructive simulation. when he saw the stuff he just laughed at me saying "you have nothing to worry about"
what are you doing reducing unsprung weight by a few grams?
clearly the material choice was bad as well, the factory arms are very ductile forged steel. hit one with a hammer some time it will leave a small mark.
--------------------------------
and yes dingleberry is a great description...LOL
I sent a rough drawing with dimensions and a buncha pics and a cad rendering to my buddy today to do a destructive simulation. when he saw the stuff he just laughed at me saying "you have nothing to worry about"
Nah ...nothing to do with 3 links...in fact this has nothing to do with links at all. It has to do with a buncha dingleberry armchair "engineers" that think they know it all.
Thom, don't you know that the engineering profession is so highly revered that their profession has the first letter capitalized? Engineer
Those dingleberries really think highly of themselves.
Those dingleberries really think highly of themselves.
LOL well there are engineers and there are ENGINEERS 
I like to trust my gut but I also like to verify I am on track from time to time.
I sent over the info to the same guy that ran the destructive simulation of that recovery point of Brads. He was just walking out of the office for almost a week of some on site testing so he said he couldnt plug it all into the computer today but he did have a look at it.
He said his gut feeling was that the failure point on a mating like that is so far above any of the other parts connected to it that it is all a moot point. This guy has been breaking stuff for decades so I trust his gut. When we were in college I remember going to the univ. of wisconsin destructive testing lab and breaking piston wrist pins just for fun...you cant even imagine a sound like the sound a 1" wrist pin makes when it lets go:rofl:
I like to trust my gut but I also like to verify I am on track from time to time.
I sent over the info to the same guy that ran the destructive simulation of that recovery point of Brads. He was just walking out of the office for almost a week of some on site testing so he said he couldnt plug it all into the computer today but he did have a look at it.
He said his gut feeling was that the failure point on a mating like that is so far above any of the other parts connected to it that it is all a moot point. This guy has been breaking stuff for decades so I trust his gut. When we were in college I remember going to the univ. of wisconsin destructive testing lab and breaking piston wrist pins just for fun...you cant even imagine a sound like the sound a 1" wrist pin makes when it lets go:rofl:
