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"if anything the arms are in compression when the vehicle's in motion"?
R-E-A-L-L-Y? Want to rethink that? Sure they "aren't bearing any load to speak of"?
Normally "when the vehicle's in motion" on smooth road & at steady speed, they "aren't bearing any load to speak of". However whenever a tire hits a pothole at speed quite a massive jolt is endured by radius arm. Think - 5000 lb plus load HAMMER. Every time the brakes get stomped those G forces go from tire to frame thru radius arms.
If it "seems to" you that a fully loaded E350 forced to make a panic stop, or hitting lousy RR crossings at speed, doesn't put "any load to speak of" on radius arms - more power to you.
And, YES "in compression" until you back up. Then the chuck holes & braking put them in tension.
No I don't want to rethink it. I've been wrenching on and driving trucks (and not the little one's you've been drivng either) for 36 years, I'm well aware of the forces involved on suspension components when the vehicle's moving. The radius arm bushings are there to cushion the jolts to them, as are the springs and bushings on the axles. So that 5000 lb hammer really isn't as heavy as you'd make it out to be. If it were, then Ford would have made the trailing arms out of something more substantial (or using the term you're so fond of "Robust") than stamped steel.
Now you're getting somewhere. Looks like a good aftermarket part for those who lack welding skill & equipment. It also addresses the important questions conspicuously evaded by 1/2" bolt advocates.
Originally Posted by maples01
Yet the part sold to repair the broken stud bolts on, requires you to drill out the old one, better call Ford and report them!
Unlike an ordinary 1/2" bolt, this part has the thinner threaded section, thicker stud portion to fit rubber bushing, shoulder to fix position of tightened nut & properly compress bushing, plus the critical ability to be tightened rigidly to radius arm.
Since it doesn't appear to be a FORD item perhaps you'd help PStruwing by confirming the P/N in pic & identifying the part's source, so that he might acquire same?
Or does this part's obviously used/abused condition suggest they really are "no longer stocked in any parts shops" & pic was just lifted off internet?
I have no idea why it's so difficult to post in here respectfully and to ignore posts which are obviously designed to instigate and antagonize but I sure wish you all could do so.
If someone is posting something that you don't like, ignore it....plain and simple. If they are completely ignored by everyone who takes issue with their opinion or post, they have nothing else to say and will eventually leave the thread.
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