Manufactured by Drysdale Motorcycle Co. of Melbourne.
Four of these machines have been built to date (Mar 2021) - two 750cc and two 1000cc. The first 750 was built in 1995, the first 1000cc in 1999. Three of them are in Sports format and one of the 1000's is naked. They are built to order using engines and components specified by the customer. Models include the 1000cc Drysdale Bruiser, one of which was stolen in 2015.
Clutch and gearbox are adapted from the Yamaha YZF1000, and barrels from the YZF400 for the 750 and YZF600 for the 1000, which has eight 39mm Keihen EFI injectors.
The 1000cc engine develops over 150hp at 12,200 rpm and max speed is 270 km/h.
The price range was around US$100,000.
Drysdale was also responsible for the equally remarkable 2WD Dryvtech.
Sources: Ian Drysdale, Phil Aynsley, et al
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