Hello,
Having recently jouned the club and bought a Dragonfly that has been converted to twin carburettors, after taking it out for a test ride I am very pleased with it as it went very well except that there seemed to be a flat spot while accelerating, this occured in 4th gear at about 40mph. above that speed it revved very freely.
The bike has been fitted with 2 x 375/7 amal monoblocs 15/16" bore, the throttle needles are in position 2 , I haven't yet checked to see what size main jets are fitted. It starts well and runs very well except for the flat spot in acceleration at about 40 mph, Anyone any ideas on what may be wrong or how I can cure the problem?
Many thanks
Les T