114-72 ANDREWS 21G CAMS FOR GEAR DRIVE (without gear) TWIN CAM 88™ ENGINES 1999-2006

114-72 ANDREWS 21G CAMS FOR GEAR DRIVE (without gear) TWIN CAM 88™ ENGINES 1999-2006

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TWIN CAMS®, EXCEPT 2006 DYNA®

Andrews Twin Cam 88™ camshafts are available with S&S® gear drives. Gear driven cams use less engine power than stock chains. If less power is needed to run the camshafts, more power gets to the rear wheel. For all-out drag motors, there is another advantage. With gear drives, super high lift cams can be used. \

This requires some explanation. With chain drive cams, valve lifts of .600 or higher will result in interference between front and rear cam lobes. With the gear drive cams, lobe tip angles are different so lobe-to-lobe
interference cannot occur. The gear drives are so smooth that ball bearings are used on both camshafts instead of a rear roller bearing. Also, gear drive cams do not have chain tensioner shoes to wear out.

WITHOUT GEAR: 114-72
GRIND: 21G
TIMING: 40/08
DURATION @ .53: 228
DURATION @.020: 264
VALVE LIFT: .498
LIFT @ TDC: .121
SPRINGS: Stock
APPLICATION: Bolt-in cam first introduced in 2000, more torque for all around riding with stock CR & heavy bikes.Similar to #23 cam for EV80. (1700 - 5200 RPM)

21G CAMS WORK WELL WITH FUEL INJECTION OR CARBURETORS