2 – Girder fork, OH & most W/NG
This section principally covers the wheel fitted to the W/NG with the 6 1/2” diameter brake that was originally fitted to the 1939-40 lightweight OG and OH 250 Colt, that in turn uses many parts originally fitted to the 1929-32 Colts as denoted by the ‘-29’ part numbers. A front wheel drive speedometer was always fitted. In early 1941 the brake drum material was changed to cast iron from sheet steel and early in 1942 the steel brake shoes were substituted for the light alloy ones, so that more Spitfires could be produced. All the Colts had 3.00×20” tyres whilst all the W/NG used 3.25×19”.
Years | Wheel Size | Spoke sets | ||
Standard Rustless | Stainless Steel | Butted Stainless steel | ||
Girder front, 6 1/2″ brake, 1/2″ – 36 spokes | ||||
1940-42 | 19″ spindle, sheet metal drum | 70A x 18 24-7012 x 18 | 70AQ x 18 24-7012Q x 18 | 70AB x 18 24-7012B x 18 |
1942-45 | 19″, cast iron drum | 66A x 18 24-7012 x 18 | 66AQ x 18 24-7012Q x 18 | 66AB x 18 24-7012B x 18 |
1939-40 | 20″ | 4571-39 x 18 4572-32 x 18 | 4571-39Q x 18 4572-32Q x 18 | 4571-39B x 18 4572-32B x 18 |
For more information on wheel rims & spokes please click here
Years | Wheel Size | Wheel Rims | |||
Standard | British Chrome | Stainless Steel | Bare Steel Where available | ||
Girder front, 6 1/2″ brake, 1/2″ – 36 spokes | |||||
1940-42 | 19″ spindle, sheet metal drum | 4502-41N | |||
1942-45 | 19″, cast iron drum | 4502-41N | |||
1939-40 | 20″ | 4503-41N | |||
Part No. | Description | Per | Years |
0566 | Bolt, torque arm to fork leg | 1 | 1929-45 |
4006-39 | Front hub, various conditions | 1 | 1939-46 |
4015-29 | Grease retainer | 2 | 1929-45 |
4036-29Q | Spindle, ½” diameter made from super tough stainless steel | 1 | 1929-45 |
4040-29 | Bearing, LH and RH, taper roller | 2 | 1929-45 |
4049-29 | Bearing abutment nut | 2 | 1929-45 |
4051-29 | Lock washer between bearing and inner lock nut | 1 | 1929-45 |
4060-39 | Spindle nut | 2 | 1939-45 |
4060-39Q | Spindle nut, stainless | 2 | 1939-45 |
4085-39A | Sheet metal outer for brake plate | 1 | 1939-45 |
4096-29 | Brake plate lock nut | 1 | 1929-45 |
4101-29 | Brake shoe, 5 1/2” brake, re-lined to order, pair | 1 | 1929-32 |
4101-32F | Brake shoe, 6 1/2” brake, C17/15, exchange, pair | 1 | 1932-45 |
4101-42F | Brake shoe, sheet metal, exchange, pair | 1 | 1942-45 |
4110-29 | Brake shoe return spring | 2 | 1929 |
4110-30 | Brake shoe return spring | 2 | 1930-45 |
4118-29 | Brake cam washer | 1 | 1929-46 |
4132-29 | Brake cam bush, shouldered nut | 2 | 1939-46 |
4141-40 | Brake arm, supersedes others | 1 | 1939-46 |
4145-29 | Cupped washer between brake arm and cam | 1 | 1929-46 |
4186-39 | Torque arm | 1 | 1939-46 |
5213-38 | Optional front wheel drive speedo bracket | 1 | 1938-40 |
5244-38 | Speedo drive gear, 44T | 1 | 1938-46 |
5244-39 | Speedo drive gear, 43T | 1 | 1939-46 |
S1-4 | Nut, torque arm to brake plate | 1 | 1939-46 |
S2-3 | Half nut retaining brake arm to cam spindle | 1 | 1939-46 |
S6-3 | Thackeray washer for brake cam | 2 | 1939-46 |
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