Wheels

For tyres, tubes ‘n’ tapes click here; for brake rods and pedals click here, for pivot pins click here. For snail cam chain adjusters click here.

Each wheel fitted to BSA’s has been given a ‘type number’ in order to simplify the parts listing. The chart below will, with reference to the table below that, tell which wheels should be fitted to a particular model. The first type number is for the front wheel and the second for the rear one. Ascertain which wheels you should have and check the ones you have against the description in the table or find the description that matches the wheels you have and note the type numbers. The parts are listed under each wheel type.
All ball bearings that we supply are of the sealed type making the old felt or rubber seals redundant.

Use the part number to order – “Wheel type” is not required except where indicated.
The wheel types have been revised since the last catalogue was issued.

APPLICATION CHART Front wheel/Rear wheel

Model

1938-46

1947-48

1949-51

1952

1953

1954

1955

1956-57

1958-63

A7 Rig/Plun

4/4

3/11

3/11

3/11

5/11

5/11

A7 ST

3/11

5/11

5/11

5/11

5/11

A10 Rig/Plun

5/11

5/11

5/11

5/11

5/11

5/11

A10 SF/SR

5/11

5/11

5/11

7/13

A7 S’arm

5/11

5/11

6/12

7/13

A7 SS/A10 S’arm

5/11

5/11

6/12

7/13

A10 RR

5/11

5/11

6/12

B31 Rig

1/9

3/9

3/9

3/9

3/9

3/9

3/9

B32/4 Rig

1/9

3/9

3/9

3/9

3/9

3/11

3/11

B33 Rig

3/9

3/9

3/9

5/9

5/9

5/9

B31/2/4 Plun

3/11

3/11

3/11

3/11

3/11

B33 Plun

3/11

3/11

5/11

5/11

5/11

B31 S’arm

3/11

3/11

6/12

7/13

B33 S’arm

5/11

5/11

6/12

7/13

B32/4 S’arm

3/11

3/11

3/11

M group Rig

2/8

2/8

3/10

3/10

3/10

3/10

3/10

5/10

5/10

M group Plun

3/11

3/11

3/11

5/11

5/11

5/11

5/11

C10/11 Rig

14 or 15/18

15/18

15/18

15/18

15/18

C10/11 Plun

15/19

15/19

15/19

C10L

16/20

16/20

15/20

C11G Rig

15/18

17/18

C11G Plun

15/19

17/19

C12

22/21

22/21

Model

1938-46

1947-48

1949-51

1952

1953

1954

1955

1956-57

1958-63

N.B. 1938-46 ‘C’ group used type 14 on girder fork machines and type 15 on telescopic fork machines.
Other applications
Type 6 A50 1962-64
Type 7 A65 all 1962-64; A65T 1965; A65R 1964-65
Type 21 D1/3/5

Description of Wheels

Wheel Type

Description

Models

Years

Front

1

Girder fork B

1938-46

2

Girder fork M

1938-47

3

7 inch, half width with steel brake plate A,B,M

1947-55

4

Splined hub, interchangeable with rear A

1947-48

5

8 inch, half width, alloy brake plate A,B,M

1949-63

6

7 inch, full width alloy, by Ariel A,B

1956-57

7

7 and 8 inch, full width cast iron, alloy brake plate A,B

1958-63

14

Girder C10/11 Rig

1939-46

15

Half width, cup and cone bearings C10/11/11G

1946-54

16

Half width, ball bearings, drop out spindle, 36 spokes C10L

1954-55

15

Half width, cup and cone bearings C10L

1956-57

17

Half width, ball bearings, knock through spindle, 40 spokes C11G Plun

1955

17

Full width version of C11G hub C12

1956-58

Rear

8

QD, 3 bolt fixing M

1938-48

9

Riveted brake drum and hub, rigid B

1938-55

10

Riveted brake drum and hub, rigid M

1949-63

4

Splined hub, interchangeable with front A

1947-48

11

Splined hub, plunger & swinging arm (and rigid B32/4 1954-55) A,B,M

1949-55

12

Full width aluminium alloy rear hub, 4 stud QD by Ariel A,B

1956-57

13

7 inch, full width cast iron, alloy brake plate A,B

1958-63

18

Half width, cup & cone, brake drum on right, telescopic fork C10/11/11G Rig

1939-55

19

Half width, ball bearing, brake drum on right C10/11/11G Plun

1949-55

20

Half width, ball bearing, brake drum on left C10L

1954-55

21

Full width C12

1956-58

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