There is a tic-toc noise coming from my bike as I accelerate. Chain and sprockets are fine. Is this my shifting cam?

Hi,it sounds from what you are saying that you have got a inturnal falt with the gearbox,im affried the only way to make a propper diagnoses is to take it apart and look at the gear sincros there has to be worn bearings,or teeth on the gears,or the sellector,or something has just manidged to come loose.
I wish you all thhe best.

HI If your bike is chain drive, look at the chain tension, the chain could be hitting the gear box case. If you primary sprocket is worn the the chain could be jumping teeth If you have a shaft drive then inspect the universal joints and the differential oil level

That knocking noise could be that the teeth on your main drive are worn out and chain is jumping them on acceleration.Pull th primary cover and check the drive gear for chain on motor sprocket.Replace it if worn to that point.

Sounds like the chain is too tight (should usually be 30-40mm of slack) or the out of alighnment.

Shift cams ( more correctly known as shift drums ), never get broken and I have never seen one wear out in over 40 years of fixing bikes. No real pressure is put on them and they only rotate due to the shift lever moving up or down. The noise is likely a broken tooth on the clutch hub or generator gear or (possibly), too much slack in the cam chain. Please rate my answer. Thanks!

OK, for a beginner in the world of 18 speed bikes, put the chain on the big sprocket up front, it should be about 46 teeth, make sure it is center and doesn't make noise, if it does, adjust it just a hair either way, now, the rear, put the chain on the big sprocket in the rear, make sure the front didn't start making noise, if it did, adjust it again. You are now ready to take off, in low gear, as you start out, it is easy to pedal, soon you will be peddling air, shift into second gear in the rear only, don't touch the front. Just a little push with the thumb will make it shift, now were going faster, easy peddling, shift into 3rd, then 4th, etc, coming to a stop, down shift the back sprocket back into low gear (big sprocket) and be ready to take off again. Soon you will be shifting that thing like a Ferrari! The front sprocket, will be used for moderate terrain, wheelies, and mountain climbing, that will come later, learn how to shift the rear first. As each gear climaxes, hit the shifter, it will get smoother as you go, and keep the chain quiet, no climbing on the next sprocket or falling out of gear. Hope this helps.

This could be a cam chain tensioner problem. Other possibilities are pre-ignition and an intermittent air leak on the intake ( if the bike has carbs). I suggest you try a different service center. Also, get familiar with the "Lemon Laws" in your state. You may need to force the dealer to give you a different bike.

This behavior is the symptom that your clutch plates are getting worn out. Since power is transmitted from the cam shaft to the front sprocket (smaller dia) is better at lower gears but once the rpm increases the clutch plates do not catch up with the cams rotation, hence slipping at higher gears & in between 4th & 5th gears the pulling power of the engine seems to go to neutral before engaging again. Check your clutch plates as well as the sprocket-chain- rear sprocket for wearing out of the gear teeth & replace if required. You will get back full power & acceleration as when the bike was new.............sodeep

there is a loud non-rythmic crunching/clunking noise. I suspected it would be either the clutch or transmission but I removed the oilpan and visually checked the transmission and oil pump and have completely disassembled the clutch, and none of these areas has any signs of malfunction. I also checked the chain/sprockets and nothing seems to be wrong there. Any ideas? The problem arose after a 600 mile road trip I took, which was the first long trip I had taken on the bike. I had used it for commuting for a few months prior to that. The first to second gear shift had gotten progressively more rough, to the point that sometimes it would not shift until I tried several times. I figured the transmission was having problems (this was my first bike so I had to learn now to use a clutch and not shift roughly), but it passed my visual inspection. The noise sounds as though there is a lose part that is getting tossed around inside the engine by a part that rotates with the engine rpm''s. If anybody has any ideas I would really appreciate it!,Cam Chain, Cam Bearings? Cam chain tensioner? these are likely suspects.,,,