Yeah Racing Pinion Gear Super Hard Combo set (48P 33T-38T 6pcs #MG-48033-038)For sale is a new in packet Yeah Racing brand 48 pitch pinion (motor) gear set to suit a huge number of 1:10th scale electric cars.Check your manual for compatibality (not suitable for all Tamiya or HPI E10).Over the years Tamiya have used at least 6 different pitch gears, so it is impossible for one size gear to fit all their cars, trucks and buggies. Make sure these gears are the correct pitch for your vehicle.
How to calculate Final Gear Ratio?For example, if your car has the following setting:
Firstly, we need to calculate the 'Motor Gear to Spur Gear Ratio', divide 84 by 25 equal to 3.36. Then we need to calculate the 'Pulley to Gear Differential Ratio', divide 38 by 19 equal to 2. Finally, the 'Final Gear Ratio' is 3.36 x 2 = 6.72.
Motor Turn used based on Final Gear Ratio:
The above guideline is for reference only. The recommended motor turn may vary depending on different brands. More information can be found on motors' official websites.