Noise in trans or in primary chain

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.

if ti was mines i would check the clutch basket
"BINGO"

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

gay

Rob, assuming this is a 4X4? Sounds like a bearing. They can vibrate, snap, clunk, all kinds of terrible noises or vibrations.
Axle u joints will also do this. Is it all wheel drive?

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.

Yes, a loose primary chain as well as a loose final drive belt can cause the problem.

Good Luck
Steve

I would think that if the noise was being made by your transmission, it would start whenever you put the transmission in second gear and continue until you shifted to another gear, not at 19 mph only.

This sounds like a vibration that is specific to the engine rpm at that speed. It may sound like a grind but may actually be a vibration noise. Try to recreate the noise with the bike sitting still in neutral. Be careful not to allow the engine to overheat though.

Try other things to help you narrow down the source of the sound. When it starts, gently touch the brakes while maintaining the speed to try to eliminate the brakes. Does the noise change if you accellerated slightly or back off the throttle slightly.

It's very unusual for a transmission to make a noise in only one gear. I've found that if a transmission is making a noise, it makes the noise all the time but maybe louder at some speeds than others.

Good Luck
Steve

IF GEAR SHIFT SHAKES THEN THE TRANSMISSION MOUNTS COULD BE BAD. HOPE THIS HELPS. GOOD LUCK

Go for a scan