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VehiclesTamiya The Grasshopper (2005)UpgradesGrasshopper 2005 factory 540-motor conversion

Grasshopper 2005 factory 540-motor conversion

Tamiya The Grasshopper (2005) · 58346

Replace the 380 motor with the factory-listed 540-J and its 18T pinion for a stronger brushed setup. The original 380 pinion and its mounting arrangement are not the 540 recipe.

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Parts & installation

Manufacturer documented
Vehicle
Tamiya The Grasshopper (2005)58346
Position
center
Change
Replace 380 motor/adaptor with 540-J53689 and 18T9805997 pinion

Parts needed

Sold packs for the stated component option
PartQty
53689540-J brushed motor1
980599718T pinion for 540 motor with grub screw and hex key1

Factory instructions document this mechanical conversion. Retain the stated original parts and observe the fitted electronics limits; no measured performance gain is claimed.

Installation notes

  • For exact 58346, use one 53689 motor and one 9805997 pinion pack. Remove the 380 motor, B7 adaptor, BA4 2.6x5mm adaptor screws and BA5 adaptor nuts; they are not used in the 540 arrangement.
  • Reuse the B9 gearbox cover and the BC1 3x27mm cover screws shown in the kit assembly. Do not reuse the removed 2.6x5mm adaptor screws as 540 mounting hardware. Set the 540 pinion 16mm from the motor face and check free rotation.
  • Confirm actual ESC motor and battery limits, wire polarity and connectors. This mechanical option does not create a 3S LiPo allowance or guarantee a measured speed.
  • Factory bearings 53030,53008 or 53029 are separately identified options; they are not proof every position already has a ball bearing.

Sources

Tamiya 58346 exact instruction manual
  • The 58346 manual shows 380-adapter removal and the 540/18T arrangement with the pinion 16mm from the motor face. Retain the specified cover screws.