For 1966 a Brabham BT18 was purchased and adapted to try the transmission in a known competitive car. Results were promising with a number of top six finishes, Mike Beckwith took the best result, a third at Zolder.
For 1967 the Chequered Flag team built a DAF chassis that was designed by Chas Beattie along similar lines to a Brabham. The car showed flashes of promise but all the cars fitted with the Variomatic transmissions suffered from the belt system absorbing more power than a standard gearbox and in the days of the 1-litre engine the loss of even a few bhp was critical. In wet conditions, where the smooth power delivery was beneficial and wheel spin was minimised, the cars were often very competitive. The highlight of the year was an end of season victory for Mike Beckwith at Brands Hatch where he beat a top-class field. Gijs van Lennep also took a win at Skarpnack in Sweden in front of a lesser field.