Pulleys, because they would have been much simpler then gears but, I can't be sure
The "driving" or drive gear is the source of power or rotation. The driven gear is turned or moved by the drive gear. Example: The pulley on a motor is the drive pulley and a pulley on a pump is the driven pulley. Example: The pinion gear in a differential is the drive gear and the ring is the driven gear.
The "driving" or drive gear is the source of power or rotation. The driven gear is turned or moved by the drive gear. Example: The pulley on a motor is the drive pulley and a pulley on a pump is the driven pulley. Example: The pinion gear in a differential is the drive gear and the ring is the driven gear.
You may need a pulley (aka gear) puller to pull it off of the crank. The puller comes usually with bolts or claws you can ancor onto the pulley...
what is
yes
Yes, for example you would want to move a gear so you would pull on one side of the pulley and it could get where you want it to get.
A catapult is neither a pulley nor a gear. It is a mechanical device used to launch objects through the use of tension and propulsion mechanisms.
Use a small gear puller
by using a pulley, lever or gear
spur
Because wheel and axle pulley and gear are simple machines
Drive Pulley = pulley on motor Driven Pulley = pulley on blower First determine your Ratio - divide large pulley size by small pulley size this will give you gear ratio, Example 2" drive pulley and a 4" Driven Pulley = 2:1 gear ratio If you know your motor shaft RPM divide that number by the ratio to get the RPM of the driven pulley, if your shaft rpm is 1800 rpm you would divide 1800 by 2 which would = 900 rpm on your driven pulley if your drive pulley is larger than than your driven pulley you multiply the rpm by the ratio example 1800 rpm x 2 = 3600 rpm