Home»Accessories»Spur Gear Drive Accessories»10/57 17.5º HELICAL STEEL Slave with Motor Pulley, keyway & grub screws to match - PAIR

The KEYWAY connects between the Motor Pulley & the Motor Axle Shaft to eliminate slip under power 3x3x12mm

TRAMPA's Motor Axle Shaft to Pulley KEYWAY measures 3 x 3 x 8mm. It connects into the Motor Pulley when mounted onto the motor Axle Shaft & is used to center the pulley on the Axle & to assist in delivering all the power from the motor without slip! This KEYWAY will fit to all TRAMPA motors amongst others.

TRAMPA's Axle length measures 38.5mm (from motor housing to end of shaft) & has a Diameter of 8mm. The centre of the key (3 x 3 x 8mm) sits 16.70mm away from the Motor front. Front side of Motor to Center of Key! Deduct 4mm & you have the length from front side of motor to the start of key....

Spur Gear Drive 57 Tooth 17.5º HELICAL Slave Pulley - c45 Hardened Steel

Spur Gear Drives are compatible with Straight-cut or Helical Gears.
CNC’d from hardened steel, the 58-tooth Helical Slave Pulley pairs with the 10-tooth Helical Motor Pulley, giving a gear ratio of 1:5.8. Compared to the 59-tooth Straight-cut Slave Pulley’s ratio of 1:5.9, Helical gears will ultimately have a higher top speed.  

Helical Gears provide more surface contact between the teeth, resulting in a smoother & quieter ride.

Straight-cut Gears are the cheaper option – still providing amazing torque & performance, while running a bit louder than helical.   

Connects to Hub Adaptor using 5x m5 x 12mm Torx head screws.

Spur Gear Drive 10 Tooth 17.5º HELICAL Cut motor Pulley - c45 HARDENED Steel Nitriding

10-Tooth helical-cut Motor Pulley for Spur Gear Drive

Helical Gears provide more surface contact between the teeth, resulting in a smoother & quieter ride.

M5 x 5mm Black Steel Grub Screw Marine Grade Stainless Steel - Connects into Motor Mount to give Axle position on Mountainboards

Made from A4 Marine Grade Stainless Steel, all of the nuts, bolts & screws used in a TRAMPA board have proven to be up to the challenge of holding everything together. Using Marine Grade Stainless Steel also means these Bolts will never rust on you! They can cope with the harshest of weather conditions & will laugh in the face of sandy/salty beaches or muddy freeride tracks - which can turn other manufacturers’ nuts & bolts into corroded rusting wrecks!

Wherever possible, we dip all our bolts into BLUE THREAD LOCKING PASTE, to ensure an extra strong & secure fix between the nuts & bolts.