Serpent 120039 64P/102T Replacement Spur Gear for Eryx 411  [SER120039]

Serpent SER120039 Spur Gear 64P / 102T
Price:
£8.31
Brand:
Serpent
Model:
SER120039
Condition:
Brand New
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Precision Replacement Spur Gear for Eryx 411

The Serpent 120039 spur gear, with a 64P pitch and 102 teeth, is intended for the Eryx 411 4.1 Touring Car EP and delivers smooth drivetrain action and accurate gear ratios. It helps maintain competitive performance across varied track conditions.

64P Pitch Benefits Explained

The finer tooth spacing of 64P allows smaller ratio steps so you can fine tune handling and speed to suit your setup. Quality manufacturing helps the gear resist fatigue from repeated running.

Suitable Chassis and Uses

Fits the Serpent S400 and S411 series and serves as a dependable replacement or upgrade for the Eryx 411 4.1. Use it as a spare for race meets or when optimising your gearing for different tracks.

Does this fit non-Serpent chassis?

It is designed for Serpent S400/S411 pattern dimensions; fitting to other makes may be possible if centre distances and mounting align, but confirm measurements first.

How fine are the ratio changes with 64P?

Because 64P has smaller tooth increments than coarser pitches, you can make more precise changes to acceleration and top speed, useful when tuning for specific tracks.

What lubrication should I use?

A light synthetic gear lubricant or a purpose-made RC gear dressing will reduce friction and help protect teeth from abrasive dust; avoid heavy oils that attract grit.

How often should I inspect the spur?

Check the spur after every few race weekends or after any drivetrain shock; look for chipped teeth and sidewear and replace when signs of fatigue appear.

Will swapping to this spur affect gearing range?

The tooth count determines final ratio together with pinion size; replacing with the same 102T keeps ratios identical, but the 64P pitch allows finer pinion choices to tweak overall gearing.

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