Mini Bike Sprocket Ratio

Not quite as extreme.

Mini bike sprocket ratio. The results are the circumference of the drive wheel tire combo in inches gear ratio and the potential maximum speed in mph. Rear sprockets come in sizes from 30 to 60 teeth while front sprockets come with 10 to 16 teeth. To find the gear ratio simply divide the axle teeth by the clutch teeth. Sprocket size gear ratio questions hey guys i have a 2 5hp briggs and stratton engine and want to build a mini bike.

So if we went down to a 16 tooth in the front but simultaneously went up to a 47 tooth in the rear our new ratio would be 2 938. Im stuck on which gear ratio is the best to get the most speed i can out of the engine. Your gear choice is a highly personal decision so what works for you might not be best for someone else. Applicable calculator formulae pi 3 14159.

Drum brake slips into this drum. For ordering purposes to determine the js in out gears put your desired clutch and rear gear teeth in the proper box and change the js in gear and js out gear until you get the desired final drive ratio. 16 in front and 46 in back would be 2 875 a less radical change but still a little more than doing only the 16 in front. The gear ratio is 6 and the potential speed is just under 36 miles per hour.

To determine the gear ratio necessary for your go kart or mini bike you must know the limit of your top speed. A very common mini bike ratio is 11 12 teeth on the clutch and 72 teeth on the axle sprocket. Our 2208 4 1 2 in. When using a clutch to drive your go kart the top speed on flat terrain is 35mph if the terrain is hilly or the weight of the driver is high the top speed should be 25mph.

The drum bolts onto our 5 6 and 8 in. Our default is for a peppy potentially street legal mini bike. To determine the final drive ratio divide the rear sprocket size say 49 teeth by the front or countershaft sprocket size say 13 teeth like a new yamaha yz250f. Sprocket drum combo for mini bike rear wheel.

All sprockets are 35 chain. The gear ratio on your mini bike or go kart is the ratio between the number of teeth on the clutch and the number of teeth on the drive axle sprocket. One of the most common gear ratios for go karts is 11 12 teeth on the clutch sprocket and 60 teeth on the axle sprocket. Mini bikes work best with a top speed of 25mph for all terrain.

J s out 14 thru 17 or 20 tooth output sprocket. 60 on the axle divided by 12 on the. You can find your ratio by calculating these together. But remember it s all about the ratio and we can change the size of the rear sprocket to alter this ratio also.

Astro wheel using the adapter kit. In this case the final drive ratio is 3 77 the front sprocket revolves 3 77 times to make one complete revolution of the rear sprocket. Select 60 or 72t sprocket.