Truck going on dyno, should I fear for my driveshaft?
#22
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Originally Posted by Stoichiometric
The calc shows that shaft was good for 7900 rpm. I bet the balance has a lot more to due with failure than RPM.
#23
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Sorry Bill. The only thing I really care about is my transfer case. The purpose of my loops would mainly be to protect the front and rear shaft from taking out the case if one broke.
I need to research my rear axle a little bit (14bolt ff), the bolts that hold the front seal/cover on the pinion would make a perfect mounting area for a rear loop. I want to see if they also hold the rear pinion support before I pull some out to make a bracket.
I am worrying too much about all this stuff, lol. I just need to strap it down and pull until the valves float.
I need to research my rear axle a little bit (14bolt ff), the bolts that hold the front seal/cover on the pinion would make a perfect mounting area for a rear loop. I want to see if they also hold the rear pinion support before I pull some out to make a bracket.
I am worrying too much about all this stuff, lol. I just need to strap it down and pull until the valves float.
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Originally Posted by 1SlowHoe
That calc is for steel. Aluminum has a higher critical speed. But IMO you are correct, balance has more to do with it than strength.
that's crazy, i didn't think there had been any steel failures.....that's even scarier.
#27
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Originally Posted by kbracing96
I'm pretty sure that most all the failures have been with 1/2 ton trucks, you might be ok seeing how your a 3/4. FWIW my truck has been to 156 mph on the dyno once
when I accidentally put it in 4th instead of 3rd ![Bang Head](https://www.performancetrucks.net/forums/images/smilies/LS1Tech/gr_banghead.gif)
![Devil](https://www.performancetrucks.net/forums/images/smilies/LS1Tech/gr_devil.gif)
![Bang Head](https://www.performancetrucks.net/forums/images/smilies/LS1Tech/gr_banghead.gif)
I did take the factory driveshaft out and have it highspeed balanced though.
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