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08-06-2023, 04:58 PM
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#1 |
 Drives: ZLI 1LE; 992 S; GLE 450, Denali HD Join Date: Sep 2019
Location: Jacksonville Beach
Posts: 181
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Half Shaft design - ZL1 1LE
Hi everyone!
Wondering why the driver side rear half shaft has a thicker diameter than the passenger side - despite the passenger side being longer. Why is that? I would have thought the shorter side(driver side) would be a smaller diameter Reason for this? |
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08-06-2023, 05:09 PM
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#2 |
         Drives: 2024 CT5-V Blackwing Join Date: Sep 2020
Location: GA
Posts: 3,557
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Noise Vibration Harshness
Last edited by Z OH 6; 08-07-2023 at 05:54 AM. |
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08-06-2023, 05:25 PM
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#3 |
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Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
Posts: 5,183
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The differing diameters changes the torsional rigidity (torsional spring rates), greatly reducing wheel hop.
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08-06-2023, 07:38 PM
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#4 |
  Drives: 2013 Triple Black ZL1 Vert M6 ECF Join Date: Mar 2011
Location: Trenton, Michigan
Posts: 7,046
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one side should be solid while the other side should be hollow.
a way of reducing resonance and wheel hop. |
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08-06-2023, 08:52 PM
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#5 |
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Super Stock
Drives: Chevrolet Camaro ZL1 Join Date: May 2022
Location: Concordia
Posts: 1,004
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This sort of design difference has been a thing for a very long time in front wheel drive transverse mounted engines and transmissions. The reason why they do it is as described above. The difference in size helps dampen noise vibration and harshness at take off and while driving. Usually the shorter axle needs to be thicker than the longer one and sometimes they go as far as adding a rubber "weight" somewhere on the shaft of the axle itself.
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2017 Red Hot ZL1 A10 - Apex ARC-8's, 305/ 325 PS4's, DSX 9.06 12% lower, Griptec OE upper, NGK HR7 Ruthenium plugs, Nostrum 25+ injectors, XDI Goliath HPFP, Katech dual in tank LPFP, Katech oil pump, LME tensioner, DOD delete, LT1 big fuel cam, Jokerz ported blower, MPI lid, GMS hood extractor bracket, Granatelli SS plug wires, Cordes LTR reservoir, DMS T-stat housing, 186* LS3 T-stat, Borla X pipe, Black Widow Angry Housewife/ Corsa NPP mufflers, BMR engine mounts, Banks iDash, Lithium Battery, AEM X- Series, HP Tuners, E85, 16.5 psi
758 HP/ 804 TQ  |
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08-07-2023, 05:36 AM
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#6 |
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Drives: ZLI 1LE; 992 S; GLE 450, Denali HD Join Date: Sep 2019
Location: Jacksonville Beach
Posts: 181
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Makes sense, thanks all...
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