Under the skin of Pav ’ s OW-01
the ground . Tapered rollers replace the original Yamaha ball bearings in the steering head . The new FZR 1000 motor is slightly taller than the original 750 . This created a space issue under the fuel tank / airbox region . This was solved by using a small aluminium racing car fuel tank replacing the original Yamaha tank . This tank only holds 10 litres but it is adequate for the short races that the bike competes in . An FZR600 plastic fuel tank cover is fitted over the top of the airbox / fuel tank area .”
A TUNE FOR EVERY OCCASSION “ The bike has been raced since 2016 using three different engine configurations . These varied with regard to displacement , compression ratio , and head modifications . The number 1 motor ( the first one built immediately produced 175ps at the rear wheel with 93lbft of torque ). The number 2 motor was a lower stage of tune 160ps . The lowest stage of tune , motor number 3 , was a 145ps spare that would fit the OW-01 or the 1989 FZR1000W that became Paul ’ s wet bike ( that same bike from the 1989-90 national production race championship ). That motor was sometimes used at street circuits like Paeroa . To give an idea how that figure rests , consider that at a mere 4700 rpm , the number one motor produces 80lbft of torque . By way of comparison that is 2lbft more torque than a 2023 KTM 1290 Super Duke at the same rpm . That , of course is a much bigger motor benefitting from extra displacement and 34 years of technological improvement including digital engine management for fuelling and ignition . “ Speaking of fuelling and ignition , the OW-01 race bike uses the standard FZR1000 ignition with uprated coils , and is fuelled by a bank of four Keihin FCR39 flat slide racing carburettors fed through an airbox . The standard ignition was retained due to its outstanding reliability and the fact that aftermarket ignitions produced no significant power gains . In the interests of reliability the decision was made not to rev the engine any harder than standard . The standard FZR1000 ignitor gives an 11,500rpm rev limit . Other standard Yamaha items retained include the camshafts . Other cam grinds were tried , but gave no real improvement . Standard valve sizes are used , as are standard valve springs .
32 KIWI RIDER