Description:

This 1961 Lotus 18/21 was built for UDT Laystall. It was built as a Formula 1 18/21 and is not
an upgraded F1 or F2 18. It features the smoother 21 bodywork and the top link rear suspension.
Laystall worked with Hewland to develop a Formula 1 gearbox, the HD5 (Hewlands first purpose made gearbox)
and this car ran with one of the prototype HD gearboxes, as well as a Colotti. It is now fitted
with an early HD5. It has a fantastic period racing record, and was driven by many famous drivers.
It has been completely rebuilt and raced successfully since then, accumulating an impressive
Hitorics record.



History



Competition History

Raced at British Grand Prix support race & Coys Historic Festival at Silverstone in 1997, driven by
Mark Gillies.
Engine

• Coventry Climax FPF
  
• 1500 cc
  
• twin Weber 45 DCOEs
  
• Dry sumped
  
• rebuilt by Stuart Rolt
  

Fuel System

• Foam filled aluminium seat tank
  
• Facet electric pump
  

Oil/Water System

• combined oil/water radiator (rebuilt by Serck)
  

Body

• Fibreglass, Gelcoat colour is UDT’s pale greem
  
• Now painted dark (Lotus) green.
  

Chassis

• Tubular space frame
  
• new adjustable Spax
  
• Double wishbone with coil over
  
• Lower wishbone, top link, 2 radius rods, coil over
  
• Rack & Pinion – rebuilt by Alan Baillie
  
• Disk, Girling AR callipers – rebuilt by Peter Denty
  
• Original, Magnesium Lotus Wobbly webs – fitted with new Dunlop L section tyres
  
  

Interior

• safety harness
  

Spares

• gear ratios