Tamiya 15429 JR High Speed EX Gear Set for MS Chassis 3.7:1 - Precision tuning for racers  [15429]

Tamiya 15429 - JR High Speed EX Gear Set - MS Chassis/Gear Ratio 3.7:1
Price:
£4.44
Brand:
Tamiya
Model:
15429
GTIN:
4950344154296
Condition:
Brand New
Available in shop
3 Reviews
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Product brief for the Tamiya 15429 JR High Speed EX Gear Set

The Tamiya 15429 JR High Speed EX Gear Set provides Mini 4WD competitors an intermediate 3.7:1 gear ratio option for MS chassis models. It is intended for racers seeking a compromise between the quicker 4:1 and the more torque-oriented 3.5:1 setups.

Fitment to MS chassis and design notes

Specifically manufactured with MS chassis dimensions in mind, this gear set maintains the chassis versatility that hobbyists expect. Using 3.7:1 allows for more nuanced drivetrain tuning without major changes to the vehicle architecture.

Race strategy and setup considerations

Introducing this ratio broadens strategy choices on mid-speed layouts. Racers can tweak gearing to reduce corner understeer and improve exit acceleration where existing ratios produce uneven results.

 

Product Reviews
3 Reviews
rating
I have been purchasing Tamiya products with Rcjaz for a couple of months now, selection is awesome and service is quick and reliable, considering I leave half way around the world.
rating
Excellent service, two of the items I purchased were out of stock but was given fair options on refund, store credit or replacement. I opted for replacement as there was a different version available and one of the items did arrive bent and they sent out
rating
envoie rapide et bien emballer sa fait plusieur fois que je commandes et je suis toujours tres satisfait je mes 5 étoiles

Is the 3.7:1 ratio a good starting point for tuning?

Yes. It is a sensible intermediate choice for testing changes without making large leaps in gearing. Use it to assess motor and tyre combos before further changes.

How should I check gear mesh after fitting?

Set a slight tooth-to-tooth clearance and spin the drivetrain by hand to feel for smooth rotation. Adjust shims or bearing placement if any binding or excess play is detected.

Will this ratio change cornering balance?

It can. The 3.7:1 option can reduce abrupt rear traction loss on corner exit, giving a steadier balance that many racers prefer on technical circuits.

Any maintenance tips after installation?

Regularly inspect gear teeth for wear, keep gears lightly lubricated, and confirm axle alignment. Routine checks help sustain consistent performance.

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