Gearbox

For gaskets click here; for tie bolts and adjusters click here; for clutch, and clutch operating parts click here; for clutch cables and adjusters click here.

Although the gearbox was made by Burman, the mainshaft was designed to mount the existing BSA ‘C’ group clutch. The gearbox model number was GB30 until 1955 engine number LA1265 when it changed to GB33 to denote the introduction of a few changes. The only significant one was to the method of clutch adjustment, which was now carried out at the kick starter end of the push rod instead of at the clutch pressure plate.

.

Part No

Description

Per

Years

3307-35

Kickstarter rubber11954-58

3792-52

Clutch cable adjuster11954-58

3793-52

Clutch cable adjuster lock nut11954-58

12401-54

Shell11954-58

12402-54

Kickstart case11954-58

12404-54

Outer cover11954-58

12408-54

1st gear, mainshaft11954-58

12410-54

2nd gear, mainshaft11954-58

12411-54

3rd gear, mainshaft11954-58

12413-54

Output or sleeve gear11954-58

12414-54

Output or sleeve gear, bush21954-58

12415-54

1st gear, layshaft11954-58

12416-54

1st gear, layshaft, bush11954-58

12417-54

2nd gear, layshaft11954-58

12418-54

2nd gear, layshaft, bush11954-58

12419-54

3rd gear, layshaft11954-58

12420-54

Output gear, layshaft11954-58

12421-54

Mainshaft11954-58

12422-54

Mainshaft bearing, kick start end11954-58

12426-54

Mainshaft bearing, clutch end11954-58

12428-54

Mainshaft bearing, circlip, clutch end11954-58

12429-54

Output or sleeve gear, oil seal11954-58

12430-54

Sprocket nut11954-58

12431-54

Sprocket, 17T11954-58

12432-54

Spacing collar, sprocket11954-58

12433-54

Layshaft11954-58

12434-54

Layshaft bush, kick start end11954-58

12435-54

Layshaft bush, clutch end11954-58

12437-54

Layshaft cover washer11954-58

12440-54

Drain plug11954-58

12444-54

Case screw51954-58

12447-55

Clutch operating assembly11955-58

12450-54

Clutch operating nut11954

12450-55

Clutch operating nut11955-58

12454-55

Washer, clutch screw worm11955-58

12455-54

Oil level plug11954-58

12456-55

Clutch adjusting screw11955-58

12459-54

Cam centre pin11954-58

12460-54

Cam centre pin lockwasher11954-58

12462-54

Positive stop pawl11954-58

12463-54

Positive stop pawl spring11954-58

12464-54

Positive stop pawl spring plug11954-58

12465-54

Positive stop pawl pin11954-58

12468-54

Gearchange spindle11954-58

12471-54

Gear lever bolt11954-58

12476-54

Gearchange spindle oil seal washer11954-58

12480-54

Gearchange quadrant11954-58

12482-54

Gearchange return spring11954-58

12483-54

Gearchange quadrant secondary return spring11954-58

12485-54

Selector fork, mainshaft11954-58

12486-54

Selector fork, layshaft11954-58

12490-54

Gear lever rubber11954-58

12492-54

Kickstarter spindle bush, inner11954-58

12493-54

Kickstarter spindle oil seal11954-58

12494-54

Kickstarter spindle oil seal washer11954-58

12495-54

Kickstarter spring11954-58

12496-54

Kickstarter spring pin11954-58

12497-54

Kickstarter ratchet pawl11954-58

12500-54

Kickstarter spindle bush, outer11954-58

12502-54

Kickstarter pinch bolt11954-58

12503-54

Kickstarter arm11954-58

Ariel Colt gearbox – 1956/1957/1958 – Used

SKU: GB33

Available on back-order

Part No: GB33
£70.00 excluding vat
A used Burman GB33 Ariel Colt gearbox for 1956-1958 models. The gearbox is in overall good condition but will require