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Tech & Fab
Driveshaft strength / failures.
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<blockquote data-quote="RustyC" data-source="post: 525262" data-attributes="member: 1997"><p>I am in the middle of some upgrades, I am building driveshafts and have a few questions to those who have had driveshafts fail. Everyone knows a 1410 joint is strong as hell and a 1350 or Toyota joint is not far behind. My question is about tube diameter and wall thickness, also about the size of the tube shaft section of the driveshaft.</p><p>The tube shaft is the male splined section of the shaft welded to the tube. Most of the ones I have been using are 1.375" x 16 spline with 2" x .120" wall tubing.</p><p>I have "barber poled" a couple tubes but never broken the 1.375" tube shaft. </p><p>My current front 2 pc driveshaft will be using the front section of the rear driveshaft from a Ford Superduty, 3.5" tube/ 1410 joints from the t-case to the carrier bearing.</p><p>The midship tube shaft is 1.25" x 29 spline with a bolt on 1410 yoke. The midship is the same as my HP60 pinion so they are equal strength. </p><p></p><p>Am I overthinking using the 1.375 tube shaft in the front section? It's minor diameter is roughly 1.25" like the midship and HP60 pinion. It looks small / weak compared to the other components. </p><p>I have 2 options for tubing on the front shaft 2.375" x .188 wall or 2.5" x .250 wall. I think the .250 wall is overkill and will just be adding weight. The front shaft is very protected by the front links and I can not see it getting hit at all. </p><p></p><p>Has anyone barber poled a .188 wall shaft without it being hit or broken a tube shaft? If so lets hear the details. </p><p></p><p>Midship (<a href="http://www.northerndrivetrain.com/category/cat_driveshaftcomp_spltubeshafts_1-250-29invol.html" target="_blank">http://www.northerndrivetrain.com/category/cat_driveshaftcomp_spltubeshafts_1-250-29invol.html</a>)</p><p></p><p>Tube shaft (<a href="http://www.northerndrivetrain.com/category/cat_driveshaftcomp_tubeshafts_1-375-16spline.html" target="_blank">http://www.northerndrivetrain.com/category/cat_driveshaftcomp_tubeshafts_1-375-16spline.html</a>)</p></blockquote><p></p>
[QUOTE="RustyC, post: 525262, member: 1997"] I am in the middle of some upgrades, I am building driveshafts and have a few questions to those who have had driveshafts fail. Everyone knows a 1410 joint is strong as hell and a 1350 or Toyota joint is not far behind. My question is about tube diameter and wall thickness, also about the size of the tube shaft section of the driveshaft. The tube shaft is the male splined section of the shaft welded to the tube. Most of the ones I have been using are 1.375" x 16 spline with 2" x .120" wall tubing. I have "barber poled" a couple tubes but never broken the 1.375" tube shaft. My current front 2 pc driveshaft will be using the front section of the rear driveshaft from a Ford Superduty, 3.5" tube/ 1410 joints from the t-case to the carrier bearing. The midship tube shaft is 1.25" x 29 spline with a bolt on 1410 yoke. The midship is the same as my HP60 pinion so they are equal strength. Am I overthinking using the 1.375 tube shaft in the front section? It's minor diameter is roughly 1.25" like the midship and HP60 pinion. It looks small / weak compared to the other components. I have 2 options for tubing on the front shaft 2.375" x .188 wall or 2.5" x .250 wall. I think the .250 wall is overkill and will just be adding weight. The front shaft is very protected by the front links and I can not see it getting hit at all. Has anyone barber poled a .188 wall shaft without it being hit or broken a tube shaft? If so lets hear the details. Midship ([url=http://www.northerndrivetrain.com/category/cat_driveshaftcomp_spltubeshafts_1-250-29invol.html]http://www.northerndrivetrain.com/category/cat_driveshaftcomp_spltubeshafts_1-250-29invol.html[/url]) Tube shaft ([url=http://www.northerndrivetrain.com/category/cat_driveshaftcomp_tubeshafts_1-375-16spline.html]http://www.northerndrivetrain.com/category/cat_driveshaftcomp_tubeshafts_1-375-16spline.html[/url]) [/QUOTE]
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