Optimal angle for half shafts? |
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Optimal angle for half shafts? |
technicalninja |
Jul 21 2024, 04:59 PM
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#1
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Senior Member Group: Members Posts: 1,825 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
Is there an optimal angle for Porsche half shafts?
I'm contemplating installing a drive package that will utilize a Boxster 6 speed and wondered what is considered "optimal". I know 20 degrees is sort of the working limit but wondered what the minimum should be. I believe having the half shaft perfectly level and at 90 degrees to the drive wheel will tend to wear the joints at a single point. What should I shoot for? |
tygaboy |
Jul 22 2024, 05:45 PM
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#2
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914 Guru Group: Members Posts: 5,425 Joined: 6-October 15 From: Petaluma, CA Member No.: 19,241 Region Association: Northern California |
I looked into this a fair bit. Set it up so there is some angle. If you have the freedom to put things wherever you want to, you still want some angle to ensure the CV moves its lube around, etc.
The standard Renegade Boxster 6-apeed kit works fine. Tony runs that set up with a 500+ whp LS7 in his and he's only ever had a boot fail. All those Renegade kits are out there working just fine. I moved my drive train forward because I could, not because I had to. Here's a rich statement, especially coming from me: "Don't overthink it." |
Superhawk996 |
Jul 23 2024, 08:26 AM
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#3
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914 Guru Group: Members Posts: 6,469 Joined: 25-August 18 From: Woods of N. Idaho Member No.: 22,428 Region Association: Galt's Gulch |
"Don't overthink it." (IMG:style_emoticons/default/agree.gif) I’ve sat through hours and hours of packaging meetings for 5 distinctly different platforms across 3 OEMs, the target is as close to zero as you can get while meeting other criteria like ride height, ground clearance, differential location, etc. Lubrication and wear patterns will take care of themselves during normal suspension motions. Photo below is production vehicle with IRS. 135,000+ miles on these with no signs that they are anywhere near end of life. Although angle is not zero, the angle is being dictated by ground clearance and load. If the rear end is loaded with cargo, the angle will be zero or slightly negative angle vs curb weight. As Dave alluded to, at curb weight, hard acceleration would bring it close to zero. |
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