Tamiya 15429 JR High Speed EX Gear Set for MS Chassis 3.7:1 - Precision mid-range gear  [15429]

Tamiya 15429 - JR High Speed EX Gear Set - MS Chassis/Gear Ratio 3.7:1
Price:
NZD$9.45
Brand:
Tamiya
Model:
15429
GTIN:
4950344154296
Condition:
Brand New
Available in warehouse
2 Reviews
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Snapshot of the Tamiya 15429 JR High Speed EX Gear Set

The Tamiya 15429 JR High Speed EX Gear Set is aimed at Mini 4WD builders wanting a tuned approach for MS chassis machines. Its 3.7:1 ratio offers an intermediate gearing scenario that balances quick acceleration with useful top speed across many track profiles.

Compatibility with MS chassis and benefits

Designed to fit MS chassis layouts, the gear set complements the chassis modularity so you can swap gearing as part of your setup routine. The 3.7:1 ratio helps manage stability on corners while keeping straight-line pace reasonable.

Tuning choices for different tracks

Adding the 3.7:1 option gives racers more fine-grain control over drivetrain behaviour. It is especially handy on courses that demand both steady cornering and decent straight speed where existing ratios fall short.

 

Product Reviews
2 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

Does this gear set require special tools to fit?

No special tools are required beyond standard Mini 4WD screwdrivers and a small spanner. Ensure correct gear mesh and lubrication when installing.

Which track types benefit most from 3.7:1?

Mid-speed circuits with a mix of turns and straights benefit most, where pure high-gear or low-gear setups are not ideal. It smooths acceleration and improves corner exits.

Will this affect battery life?

Changes are minor. Because the ratio moderates RPM spikes, battery draw can be more even, but actual run time also depends on motor and track conditions.

Should I adjust weight distribution after fitting?

It is a good idea to revisit weight and roll characteristics. Small shifts in mass or bumper setup can complement the new gear ratio for improved balance.

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