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2015+ S550 Mustangs
2015+ S550 Mustang Talk
First LOOK at the S550 IRS !!
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<blockquote data-quote="twistedneck" data-source="post: 14410993" data-attributes="member: 130159"><p>In order to produce a driveshaft that has the capability to spin as fast as it needs to and support maximum rpm in 5th gear you either need a really short aluminum drive shaft or a super strong single piece shaft. its all about the frequency.. if you have a driveshaft with to low a resonant frequency it blows up at high rpm. only way to get a single piece shaft to have high speed is to make it carbon fiber. else, you need two smaller shafts to keep the frequency high. the shaft spins directly proportional to the rear end so if you like to use 6th gear to get top speed with a real short rear end gear like a 4.56 then your shaft will be about 10,000 rpm and it will go boom unless its very stiff carbon fiber, or alternately thick walled steel tube but that gets so heavy the frequency still goes too low.</p></blockquote><p></p>
[QUOTE="twistedneck, post: 14410993, member: 130159"] In order to produce a driveshaft that has the capability to spin as fast as it needs to and support maximum rpm in 5th gear you either need a really short aluminum drive shaft or a super strong single piece shaft. its all about the frequency.. if you have a driveshaft with to low a resonant frequency it blows up at high rpm. only way to get a single piece shaft to have high speed is to make it carbon fiber. else, you need two smaller shafts to keep the frequency high. the shaft spins directly proportional to the rear end so if you like to use 6th gear to get top speed with a real short rear end gear like a 4.56 then your shaft will be about 10,000 rpm and it will go boom unless its very stiff carbon fiber, or alternately thick walled steel tube but that gets so heavy the frequency still goes too low. [/QUOTE]
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First LOOK at the S550 IRS !!
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