G'Day all, Executive Summary: Question for single cyclinder road trail bikes. Do your bikes "lurch" when travelling at any speed with a neutral throttle? Or do I need to start tracking down a cause for this? Long Winded Read: As some my have gathered I went and got a 1999 Honda NX650 Dominator, single cylinder 4stroke dual sport beastie. The first weekend I took it up to the Snowies and back again with the Musketeer ride, a 1600+ km thrashing, without finding much wrong with it other than a lack of power trying to get over bigger and more sporty road bikes. This I should be able to sort out with a little practice, I hope. However since I've been riding around the city and down freeways, I've noticed that there is a bit of a lurching motion when the bike is at neutral throttle. For someone who prides them self on being a smooth rider this is a little off putting and is taking a bit of confidence away. When I say lurching I mean that it feels like very brief drops in power and a regular return to power (it almost feels kind of like I've got a buckled wheel and its occasionally rubbed on the swing arm but the lurching doesn't seem to change rythym with change of speed). Its not terribly pronounced but it seems to produce a rocking motion in my upper body which perhaps makes me look like I've mentally lost it (this is debatable). Admittedly I have previously only ridden 4 cylinder 4 strokes, most recently the 2004 CBR1000RR Fire Blade which you'd expect to be smooth as silk. So I could be a little spoilt and just need to learn the new way. In the process to fix this I've had the chain and sprockets replaced which I think has made a slight improvement but its still definitely there. When I returned to point out that the $400 spent hadn't fixed the problem the mechanic took it for a test ride, he came back looked at my funny and said it was the smoothest single he had ridden. I just don't see how this could be normal, then again perhaps I just need to get used to it. So do these types of bikes have a slight lurching motion when at neutral throttle at pretty much any speed or do I have a problem I need to track down?