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Plastic model 5-speed Twin Gearbox HE 「 TechniCraft Series 」 
Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.
[Connecting Left and Right Independent Type Gear Boxes]
Due to its high precision and durability, the TechniCraft Series gear box is also used for many of the machines participating in the robot contest.
The 5 speed twin gear box HE is used by connecting the left and right independent type gear boxes.
By changing the gear and changing the position of the drive shaft, you can select 5 gear ratios : 6.1 : 1, 15.6 : 1, 40.2 : 1, 103.3 : 1, 265.6 : 1.
Of course, the right and left gear boxes can be easily connected and separated.
In addition, 5 mounting parts can be mounted on one side, and 3 holes are provided for each mounting to increase the freedom of mounting.
In addition, the 103.3 : 1 and 265.6 : 1 have built-in clutch gear to protect the gear from overload.
It also comes with a hexagonal hub that can mount a cross-shaped crank arm and RC car wheel.
Starting with the set 260 motor, you can also use the separately sold 140 and 130 motors sold separately.
When completed, the size is approximately 88.7 mm long, 86 mm wide, and 27 mm high (when connected).
Weight is approximately 140g (when gear ratio is 265.6 : 1) Gear ratio 6.1 : 1, 15.6 : 1, 40.2 : 1, 103.3 : 1, 265.6 : 1
with two 260 type motors.