Have you done normal maintence on it like plugs and air filter recently?
Have you done normal maintence on it like plugs and air filter recently?
Hmmm, let's see here. It does it while coasting.....as in when you're in Neutral or when you're in gear and engine braking? Have you tried replicating this if you have the clutch handle pulled in? If it's when the clutch handle is pulled (as it should be if coasting), then it's unlikely the clutch that's the issue here as half of it would be free-wheeling. Not unheard of, but not likely either. Time to turn to other issues. And considering you have 16k+ miles on the bike, when was the last time the chain and sprockets were replaced? I ask that because in a vast majority of these types of scenarios, it's the chain/sprocket that's lurching from tight spots and you feel it. Or it could be that the tires/wheels have a flat spot and that's what you feel.
- Check the wheels/tires for roundness
- Check the chain for tight spots are it goes around
- Check that the chain/sprockets are smooth when they mess together and aren't hitting any bolts/nuts/pieces in sprocket cover
So, when coating with the clutch pulled in, the chain and sprockets are freewheeling around and there's little tension on the chain. It all other circumstances there's tension on one run of the chain or the other. If tight spots exists in it, they will be felt in the zones. And depeding on how you have ridden over that 16,000 miles, you may have one area of the chain that has stretched more that another creating that tight spot. Until you measure the chain you can't tell. In a lot of cases, lifting the rear end and spinning the wheel by hand will let you visually see how the chain reacts when going around.It does it while cruising or engine braking, but not when coasting with the clutch handle is squeezed or in neutral. I may have said that ass backwards before. That's the main reason I assumed it wasn't the wheels/tires.
In all honesty, the chain and sprockets are from when I did the conversion, which was pretty much off the showroom floor. I like to think I'm pretty good at keeping it cleaned and lubed. But I really didn't know what to expect to get out of it. But by the sounds of it, I'm probably overdue.
I guess I assumed if it was the chain and sprockets it would do it while coasting as well.
Flat spot on tires; don't use stands? Bike sits long days. Next, some wind direction can cause a slight smoothness glitch. If you ride tiny short trips you don't ride long enough to forget about the temporary problem. Next if the rear tire is past the wear bars then it will run harder and you feel stuff easier.
OK, you ride about every day. Next question: is the bike flashed; did you use fuel additives; what mods; are you the original owner as in did you put on the total miles. Was any work done of the bike prior to this problem. Looking for history as in looking for total data.I use stands if it's going to be sitting for any more than a few days at a time. The feeling hasn't been a one time thing. I was hoping it was something like that but it's been that way for a little bit, it's just been getting significantly worse. The bike is mainly ridden to and from work, as with work, school, and kids free time isn't available often. The commute is 50 miles one way. I was toying with the idea it was the road surfaces, etc., but it happens everywhere at every speed.
OK, you ride about every day. Next question: is the bike flashed; did you use fuel additives; what mods; are you the original owner as in did you put on the total miles. Was any work done of the bike prior to this problem. Looking for history as in looking for total data.
Perhaps in need of an oil/filter change? If it is only felt when the clutch is engaged maybe maybe you could be feeling dirty oil moving about.
If your chain has tight spots that's more than likely the issue. Once that's changed out, see if it goes away. If not, then continue trouble shooting, but until then, I'd say that's the likely culprit. I've had chains get tight spots (and I'm religious about cleaning and lubing stuff) and experienced mostly what you described, always worse when the engine is engaged.