Post by Crossbones Dennis on Dec 29, 2010 10:34:47 GMT -6
SECTION 4 – NHRA SUMMIT RACING SERIES
SECTION 4B – ADVANCED E.T.
Page 10
DRIVETRAIN: 2
DRIVELINE (December 13, 2010)
Beginning Jan. 1, 2012 all full-bodied vehicles, where the OEM floor has been
removed, each end of driveshaft must have round 360-degree driveshaft loops
within 6 inches of U-joints. Additionally, driveshaft must be covered by 360-
degree tube, covering the front U-joint and extending rearward a minimum 12
inches. Minimum thickness of tube is .050-inch chromoly or titanium. Driveshaft
tube must utilize a minimum of four attachment points to the chassis, either
bolted with minimum 5/16 SAE bolts or welded or 1/4-inch push/pull pins. See
General Regulations 2:4.
SECTION 4B – ADVANCED E.T.
Page 10
DRIVETRAIN: 2
DRIVELINE (December 13, 2010)
Beginning Jan. 1, 2012 all full-bodied vehicles, where the OEM floor has been
removed, each end of driveshaft must have round 360-degree driveshaft loops
within 6 inches of U-joints. Additionally, driveshaft must be covered by 360-
degree tube, covering the front U-joint and extending rearward a minimum 12
inches. Minimum thickness of tube is .050-inch chromoly or titanium. Driveshaft
tube must utilize a minimum of four attachment points to the chassis, either
bolted with minimum 5/16 SAE bolts or welded or 1/4-inch push/pull pins. See
General Regulations 2:4.