Bugatti Type 57S clutch rebuild - Classic and Racing

Bugatti Type 57S clutch

Clutch and ring gear

Clutch cover

Clutch levers — One shim made.

Clutch levers — Clutch levers need shims making to stop clevis pin from rattling about.

Clutch levers — Clutch levers assembled with anti scuff grease on pivots.

Bugatti clutch cover — Clutch fingers split pinned in position.

Bugatti clutch cover — Clutch cover showing pockets fro pressure plate springs.

Bugatti clutch cover

Bugatti clutch cover — Clutch thrust bearing return springs.

Bugatti clutch cover — Clutch fingers.

Bugatti clutch cover — Pressure plate and cover.

Bugatti clutch cover — Bugatti ID numbers.

Bugatti clutch cover — Clutch cover complete with thrust bearing pusher.

Bugatti clutch cover — Thrust bearing in place having been rebuilt by Bill.

Clutch calculations — Working out the clutch clearances requires measuring the basket and cover with pressure plate and plates and some maths!

Clutch calculations — Workings out

Clutch hub

Bugatti clutch plates — Drive plate in clutch basket.

Bugatti clutch plates — Marking up drive plate.

Bugatti clutch plates — Clutch hub and driven plate.

Bugatti clutch plates — Clutch hub

Bugatti clutch plates — Clutch hub and retaining plates.

Bugatti clutch plates — Drive and driven plates.

Bugatti clutch plates — Using bolts to hold it all together while riveting takes place.

Bugatti clutch plates — Riveting the clutch hub with hub plate retaining plates.

Bugatti clutch plates — Domed head rivets are used. Special punch made to achieve domed rivet.

Bugatti clutch plates — Clutch driven plates held in place by retaining plates which are riveted to central hub.

To rivet the clutch hub requires special fixtures to hold it all square and was carried out in the press.

Clutch assembly

Well that’s the clutch finished, it weighs 23.6 kg.