![The circle of gear order of the stick](https://kumkoniak.com/90.jpg)
![the circle of gear order of the stick the circle of gear order of the stick](https://cdn.shopify.com/s/files/1/0314/9476/6636/products/CLGST03RDGHOVER_800x.jpg)
![the circle of gear order of the stick the circle of gear order of the stick](https://image.shutterstock.com/image-vector/pulling-parking-brake-gear-stick-600w-616831271.jpg)
Restore your vintage tractor with new aftermarket parts for many classic tractor brands. Place a styrofoam cup in the hole, and it will keep hot things hot and cold things cold, with no spills. Two cast pieces mount directly to the differential housing behind the seat. I used a 1/8” drill bit and drilled a circle of little holes I’d drawn around the base of a marine cup holder in the fender …. So an involute profile gear tooth produces a constant ratio of rotational speed.Tractor fender cup holder A quality, pre-cut left-hand fender panel that will help make the inside of your John Deere® 9000-9020 4WD Series tractor cab look like new. The end result is that even though the contact point diameter changes continually, the speed remains the same. The contact point starts to slide onto the skinny part of the bottom tooth, subtracting a little bit of velocity from the top gear to compensate for the increased diameter of contact. As the teeth continue to rotate, the contact point moves even further away, going outside the pitch diameter - but the profile of the bottom tooth compensates for this movement. This pushes the top gear ahead, so it compensates for the slightly smaller contact diameter. As the gears turn, the contact point slides up onto the thicker part of the top gear tooth. But notice that the part of the top gear tooth that contacts the bottom gear tooth is very skinny at this point. As the teeth first start to engage, the top gear tooth contacts the bottom gear tooth inside the pitch diameter. Since the contact diameter is not constant, the pitch diameter is really the average contact distance. The pitch diameter is the effective contact diameter. This means that the radius of the contact point gets larger as the teeth engage. If you were to follow the contact point, it would describe a straight line that starts near one gear and ends up near the other. On an involute profile gear tooth, the contact point starts closer to one gear, and as the gear spins, the contact point moves away from that gear and toward the other.
![The circle of gear order of the stick](https://kumkoniak.com/90.jpg)