grasshopper drift conv type B

This is a conversion kit (type B) that enables RWD drift driving with Grasshopper/Hornet.
It increases the sharpness of the steering wheel, which tends to be lacking in the stock version, and allows you to apply the countersteering necessary for RWD drifting.
Instead of a standard wheel with a bearing in it, the bearing is in an upright and uses a more common 12mm hexagonal hub.

### Items that need to be purchased separately
* OP.1183 M chassis reinforced freewheel axle set
https://www.tamiya.com/japan/products/54183/index.html
* SP.593 4×6mm flange pipe (set of 5)
https://www.tamiya.com/japan/products/50593/index.html
* 3 x 12mm screw x 4
* 2mm spacer x2
* OP.1572 DT-03 turnbuckle all set
https://www.tamiya.com/japan/products/54572/index.html
or
* 3mm screw shaft set
https://www.tamiya.com/japan/products/70171/index.html

* Drifting gyro YG-302 etc.
https://shop.teamyokomo.com/yg-302b
* Servos that are difficult to hunt (analog servos are fine if the gyro is compat