The Tui on the track, note the now forward-braced rollover hoop.
Alan McCall was a respected mechanic at McLaren when he produced the Tui F3 car in 1970, Tui is the name of a small bird from McCall's native New Zealand. In 1971 a Formula B car was built which acted as base for the 1972 F2 car which Dave Morgan and John Watson showed had some promise. McCall then became involved in building the tub for the Tecno F1 project. The Tui was then converted to run in the North American F Atlantic but without great success and after this Tui were not seen again.
 
  
Alan McCall sitting in his own design.

The Tui AM1 consisted of an aluminium monocoque with outboard suspension, the Broadspeed engine acted as a stressed member. Many of the parts used were ex-McLaren including the wheels, uprights and windscreen.
Wheelbase: 84.5 ins.
Track front: 54 ins. Rear: 56 ins.

Bet Hawthorne showed the car had potential but like many of the smaller teams with no budgets getting hold of a decent engine was a problem. The best finish for the AM1 was a fourth in a Lombank round at Brands Hatch.

   
Drivers:  
1970

Bert Hawthorne.