13T 0.5mm Module Pinion MG313T/0.5M for 3.175mm Motors by GPM  [MG313T/0.5M]

40Cr Steel Motor Gear 13T ( Module:0.5mm, Motor Tooth Diameter:3.175mm) - GPM MG313T/0.5M
Price:
AUD$11.31
Brand:
GPM
Model:
MG313T/0.5M
GTIN:
4894538411379
Condition:
Brand New
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13T Pinion Gear (0.5 Module)

This MG313T/0.5M pinion is an aftermarket RC motor gear intended for direct swap onto motors that meet the specified module and tooth diameter. It is manufactured from 40Cr steel and finished with a hardened black surface to resist wear during normal hobby operation.

Specifications: 13 teeth (13T), 0.5mm module, motor tooth diameter 3.175mm, round motor bore. The gear fastens with two 3x3 set screws, allowing simple installation on compatible shafts. Verify the motor dimensions before buying to ensure proper fitment.

Tuning notes: mount the pinion so set screws press on a flat or keyed area of the shaft, tighten gradually and check mesh with the spur gear to avoid binding. Changing tooth count alters final drive ratio and will predictably change acceleration and top speed—use this pinion when experimenting with gearing setups.

What checks should I do before fitting?

Measure the motor tooth diameter and bore, confirm a 3.175mm match, and inspect the shaft for a flat or key where the set screws will clamp.

Can changing to this pinion improve acceleration?

Yes; reducing tooth count generally raises acceleration but may lower top speed. Use this pinion as part of ratio tuning to reach the balance you want.

How should I tighten the set screws?

Tighten incrementally and alternate screws to keep the pinion seated squarely. After final tightening, rotate the motor by hand to confirm smooth mesh with the spur gear.

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