Spur Gear 64 Pitch 108T for RC Drivetrains - Yokomo YOKSG64108  [YOKSG64108]

Yokomo SG-64108 - Spur Gear 64 Pitch 108 Teeth
Price:
CAD$10.40
Brand:
Yokomo
Model:
YOKSG64108
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Spur gear function in model drivetrains

This Yokomo spur gear is a 108-tooth, 64 pitch replacement designed for use in RC model drivetrains. It acts as the primary large gear in a spur and pinion setup, defining the overall drive ratio and establishing tooth contact with the motor pinion.

Installation notes: mount the spur concentrically on the gearbox output hub or spur holder for your chassis, align the motor pinion for even tooth engagement, and adjust motor position or shims until there is no binding or excessive play. Make minor motor or spacer changes as required and confirm smooth free rotation at low throttle before fully tightening fasteners.

Tuning role: fitting a 108T spur alters the final drive compared with smaller spurs, trading off initial acceleration against potential top speed depending on the pinion used. Use this part to experiment with gearing for lap time, run length, or traction while monitoring bearing condition and motor load to avoid premature wear.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

How do I set correct mesh with a 64 pitch 108T spur?

Start by loosely fitting the spur and motor, bring the pinion into contact, then back off slightly until there is a small visible clearance between teeth under light pressure. Rotate the gears slowly to confirm smooth engagement before tightening the mount evenly.

Will a 108T 64 pitch spur work with standard 64 pitch pinions?

Yes, but you must match the pitch. A 64 pitch spur requires a 64 pitch pinion of the correct diameter and tooth count to achieve proper mesh and avoid accelerated wear.

What practices reduce premature spur or pinion wear?

Keep mesh correct, ensure bearings are in good condition to reduce side loads, avoid overloading the motor with an aggressive pinion, and inspect teeth regularly for chips or uneven wear.

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