I think it is called a rowel
Rowel
The wheel on a spur is a "rowel".
The teeth are usually provided on the pinion of the spur wheel, to drive the spur wheel.
The teeth are usually provided on the pinion of the spur wheel, to drive the spur wheel.
The pinion wheel is smaller than the spur wheel in single purchase crab because it is the one that drives the spur wheel.
It depends on what you're specifically referring to for whiz and spur. I believe you're referring to; Spur: Spiked wheel on horse rider's heel and Whiz: Moving through the air quickly with a whistling sound. Well, when a rider jabs the horse with the spur, he/she is trying to encourage the horse to go faster. So, they both refer to: Moving quickly.
The 2014 Bentley Flying-SPUR has all wheel drive.
a rowel
The 2009 Bentley Continental-Flying-SPUR has all wheel drive.
The 2006 Bentley Continental-Flying-SPUR has all wheel drive.
The 2012 Bentley Continental-Flying-SPUR has all wheel drive.