Serpent 120043 71T 48P Spur for Eryx 411 Race and Replacement  [SER120043]

Serpent SER120043 Spur Gear 48P / 71T
Price:
£8.31
Brand:
Serpent
Model:
SER120043
Condition:
Brand New
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Refine Eryx 411 Drive with an Accurate Spur

The Serpent 120043 spur gear is made for the Eryx 411 4.1 Touring Car EP, using a 48P, 71-tooth specification. It supports reliable power transmission and smooth gear meshing, suitable for racers replacing worn parts or testing new ratios. Compatibility with S400 and S411 series gives extra fitment options.

What the 71-Tooth Ratio Delivers

A 71T spur at 48-pitch provides a measured change to final drive, helping balance acceleration against top speed depending on pinion selection and motor tuning. It is a sensible choice when dialing in handling on different circuits.

Installation and Fitment Advice

The spur installs in Serpent Eryx 411 4.1 gearboxes and will work with S400 and S411 variants. Installation is routine for most builders; ensure correct mesh, tighten mounting hardware, and recheck after a short run.

Does this suit my older Serpent chassis?

Compatibility is confirmed for Eryx 411 4.1 and S400/S411 series. For older or modified chassis, verify center distance and mounting to ensure correct fit.

Should I change my pinion when switching to 71T?

You may need to alter pinion size to reach your target ratio. Test different pinions to find the balance you want between acceleration and top speed.

How do I check gear mesh correctly?

Set a small clearance between pinion and spur using a feeler or paper method, rotate the gears to confirm smooth contact, and then secure the gear while maintaining that mesh.

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