Globact 32P 5mm Pinion Gear 17T 18T 19T 20T 21T Hardened Metal Pinion Motor Gear Set for RC Buggy Car Monster Truck(Compatible with 0.8 Metric Pitch)

Specifications: Material: Metal Teeth: 17T 18T 19T 20T 21T Height: 14mm Tip diameter 17T: 15.1mm 18T: 15.9mm 19T: 16.5mm 20T: 17mm 21T: 18mm Suitable shaft diameter: 5mm Package information: Package size: 8.5 * 4.5 * 3cm / 3.3 * 1.8 * 1.2in Package weight: 50g Polybag package Package list: 1 * 32P 17T Pinion Motor Gear 1 * 32P 18T Pinion Motor Gear 1 * 32P 19T Pinion Motor Gear 1 * 32P 20T Pinion Motor Gear 1 * 32P 21T Pinion Motor Gear 5 X Grub Screws 1 X Hex Key Note: 1.32Pis the pitch of each tooth on the pinion gear and the 17T 18T 19T 20T 21T is the number of teeth on the pinion gear. You have to make sure your spur gear and pinion gear have the same pitch, or the teeth wont mesh. 2.5mmThe pinion gear shaft diameter or bore is 5mm, make sure your RC motor shaft have the same diameter. 3.Make sure you thread lock the grub screw. They are hard to find when they fall out. 4.Larger gears will result in higher speeds while smaller gears provide more torque. For quicker acceleration go for a smaller pinion gear (with fewer teeth) and a larger spur gear (with more teeth). 5.Your car will accelerate off the mark very quickly with more torque, and youll also benefit from cooler running. temperatures, extending the life of your motor and ESC.How to install the pinion gear: You will probably need to loosen the motor a bit, in order to fit the pinion gear on. Make sure you lock it in place on the flat portion of the motor shaft. When you are tightening it back up, make sure you leave about a gap between the pinion gear and the spur gear. That gap will be very small. It should be about the width of a piece of paper.