Gear heads

Metal Cutting Blade Type

A-1

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-1

φ24

□5.4

spline 6×10×0.5

spline 7×7×0.75

3

275g

M8 Left Hand Thread Nat

~20cc

A-2

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-2

φ24

□5.4

spline 6×10×0.5

spline 7×7×0.75

4

600g

M8 Left Hand Thread Nat

~26cc

A-3

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-3

φ24

□5.4

spline 6×10×0.5

spline 7×7×0.75

4

370g

M10 Left Hand Thread Nat

~30cc

A-4

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-4

φ25

□5.4

spline 6×10×0.5

spline 7×7×0.75

3

300g

M7 Left Hand Thread Bolt

~20cc

A-5

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-5

φ25

□5.4

spline 6×10×0.5

spline 7×7×0.75

3

300g

M7 Left Hand Thread Bolt

~23cc

A-6

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-6

φ26

□5.4

spline 6×10×0.5

spline 7×7×0.75

​4

400g

M7 Left Hand Thread Bolt

~26cc

A-7

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-7

φ26

□5.4

spline 7×7×0.75

​4

567g

M7 Left Hand Thread Bolt

~30cc

A-8

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-8

φ28

spline 8×9×0.75

​4

720g

M10 Left Hand Thread Nat

~50cc

A-9

Type name

Diameter of operating pole

Form of transmission shaft 

Number of bearings

Weight

Cutter blade mounting

Usable engine displacement

A-9

φ28

spline 8×9×0.75

4

770g

M10 Left Hand Thread Nat

~50cc