Re: Shift on the fly

Posted by John Wallis On 2014/5/16 21:21:33

The term "shift on the fly" usually applies to the four wheel drive system on Jeeps and pickup trucks. It is the ability to engage the 4X4 system while in motion. Some of the older designs required the vehicle to come to a complete stop before engaging 4WD by manually locking the hubs on the front axle.