Not a whining sound... more a sort of washing machine cycle sound, more gutteral than high pitched? Started on the last part of the journey back from The Krazy Horse the other night so i has beeb wringing its neck. Bike starts and droves ok tbh, the sound is not present when sitting, just on the move, pulling the clutch in when rolling along the road does not stop it either. The bike was whining a little on the motorwats through the gears, but i noticed that stopped somewhat at least when this sound started? Also When stationary in the garage, engine running, if i hold the revs with the throttle ot seems like a larger chunk of the rev range is quite burbley now? Could be imagining it though.
Carb rebalance?
Cam Chain ?
Leak in the carb rubbers?
Any thoughts/advice would be great, apologies for the descriptions but without being here its difficult to capture the sound