Tamiya 15516 FM-A Chassis Adjustable Gear Set for Mini 4WD  [15516]

Practical setup notes for the Tamiya 15516 FM-A Chassis Setting Gear Set

Hobbyists focused on lap times will appreciate the Tamiya 15516 FM-A Chassis Setting Gear Set as a straightforward way to tune FM-A platform cars. It helps you tailor drive characteristics to suit different circuit demands.

Five ratios for bespoke tuning

The set includes five ratios: 3.5:1, 3.7:1, 4:1, 4.2:1 and 5:1 so you can optimise either punch out of corners or top end velocity on straights. A 1.4mm hollow lightweight propeller shaft is supplied to cut rotating weight and sharpen throttle response.

Compatibility plus reinforced parts

It is compatible with FM-A, Super X and Super XX chassis, offering flexible application across models. The reinforced 8T pinion and G-2 gears provide robustness, while the 620 ball bearing and fluorine coated gear shaft reduce friction for smoother runs.

Installation and practical testing

Assembly is straightforward, enabling quick gear changes during practice. This makes it easy to try combinations and find the right compromise between acceleration and sustained speed.