GEAR JABA is one of the weak parts of MS Chassis driving part.

To prevent the rear counter gear from rising upwards

It is a jig that helps machining so that it can be firmly fixed to the chassis using a hollow shaft.

Caused by the phenomenon that the rear counter rises upward

1. Damage to fixing hooks of part A

2. Broken pinion gear

3. Counter gear broken

4. Loss of torque

As a tool that covers all of these, it is an essential jig in open classes.

Previously, some players in Japan used a method of drilling holes on both sides of the chassis.

It is a product that eliminates the disadvantages of hole processing method and shaft attachment/detachment.

It is a very popular product that is also flooded with orders from Japan.

※ The 2mm hollow shaft in the picture is for better understanding.

not included in this product

It can be purchased separately from the website.

The component consists of a drill for drilling holes and a handle.

A separately machined 2mm hollow shaft is used to replace the shaft of the counter gear.

As shown in the picture above, on both sides of the shaft for counter gear

After drilling a 2mm thick hole to the desired depth,

By inserting a machined hollow shaft, the counter gear is completely fixed.

- How to use -

Insert the gear java drill into the chassis counter gear position as shown in the picture.

The location to drill the hole in the photo is on the left.

(Depending on the color and type of chassis, you may need to spread them slightly apart.)

Insert the handle, which is a component, in the opposite direction to the blade.

While pressing the handle in the direction of the arrow in the direction of the blade entry,

Turn the gear Java clockwise to process.

Drill just enough to let the shaft go in.

If you drill too deep, the shaft may come out.

Work in multiple parts at once.

Please refer to the picture to help.

Use the blade of the gear java to drill the other side as well.

Turn it in the opposite direction and insert it into the chassis.

As I push the handle in the same direction

Turn the gear Java clockwise to process.

Next, insert the hollow shaft sold by Switch On into the chassis.

With the feeling of slightly opening the chassis with your hand

Put it in the diagonal direction while applying force.

After that, you can use the same method when inserting and removing the counter gear.

Then, shake it with tweezers in the direction the shaft was drilled.

(This is the most important point.)

It is most important to drill just enough to move it left and right.

As shown in the picture below, there is room to move left and right,

It must be machined to a depth where the shaft will not fall out of the chassis.

If you shake it but it is stuck and does not move

Repeat the operation below again.

When shaking the shaft as shown in the picture below

without falling over

clack clack

If you can feel the movement, you're done.