I would double check the chain tension and make sure the wheel is straight.

 

Thanks, just checked the chain slack and it's at 30mm. Rear wheel looks straight and the chain tension adjusters match on both sides.

 

someone threw a screw or nut in your rim hole or the three bolts that hold the oil spinner cover one of them came loose

 

Took the rear wheel off and checked the hub. Everything seemed correct per the manual.

Went for a ride and it's no better, possibly getting worse.

So I guess the next step is order a couple of gaskets and take off the right side cover.

I used blue threadlock on the 3 bolts. Hoping one didn't work it's way loose.

 

never had problem re-using my right side engine cover gasket when doing my oil spinner cleaning, but I do have a new gasket if my gasket decides to rip.

 

I had a weird noise when I down shifted from 4th to 3rd a couple times. Almost like metal shavings getting into the clutch plates. As soon as I let the clutch out it went away. I havent heard it lately. I would take it in if its still happening and see what they do under warranty.

 

Ok, thanks, I'll try to re-use the gasket since I just replaced it when the spinner was cleaned. Hopefully I'll have time to tear into it Sunday and report back.

Thanks again.

 

Went for a short ride today and captured the noise a few times starting around 4 seconds in to the first video clip. Almost certain it is coming from the rear/exterior of the bike and not the engine case.

Does it look like the chain free-play is excessive? Just re-measured the slack and it's 35mm but I was wondering if the noise could be the chain slapping?

 

dam almost sound like when my hayabusa counter sprocket and rear sprocket grenade and a few tooth broke off the sprockets

 

Are the wheel spacers on the correct sides? Just another idea maybe they are swapped around and putting side load on the bearings to make the noise and the chain.

 

Yeah, this was one of the first things I figured was causing the issue. Went back and double-checked the manual and I believe I have the spacers correctly installed. The spacer with the skinnier shoulder is on the right side with the skinny end up against the rear brake bracket.

 

Are you running stock chain... I had my chain starting binding on few links and had strech on few spots only, and it was causing noise and vibrations ... Check the tension of the chain, then spin the rear wheel a 1/4 turn and check tention again ,keep doing that until the chain makes 1 revolution. The chain tension should be the same.. If it gets tighter or looser you will need a new chain..

braap

 

The stock chain was replaced when I put the +2 tooth rear sprocket on. I replaced it with the same DID chain as stock. Thinking I will pick up a new one and maybe spring for a higher quality option.

Thanks for the responses. I'll post an update after changing the chain.

 

Last night I put on a new chain and went 1 link bigger (107 links) than stock which puts the axle much closer to the center of the adjustment slots in the swingarm.

Unfortunately, the noise is still occurring. My next step is going to be removing the mnnthbx 36 tooth sprocket and putting the stock back on to see if that's stops the issue. I sure hope so because this is really starting to drive me crazy!

Couple of other things I've brainstormed while laying awake in bed at night....

• the sound seems like it could be coming from the adjusters inside the swingarm
• it also sounds similar to the noise I can create by moving the rear caliper back and forth

Any other ideas as to what could be causing this noise?

 

Dumb question did you put the rubber dampers back in...

and can you duplicate the sound while spinning the wheel by hand......

 

Yes, I made sure to check for the rubber dampers when I took the rear wheel off recently. The way the noise sounds made me immediately think this might be what was causing the issue, but alas, all seemed normal in the hub.

I can't get the bike to make the sound when it's up on a stand and I spin the rear wheel or when I walk the bike around. Only seems to happen when it's running. However, it doesn't appear to matter if it's in gear or not. If I'm coasting up to a stop in neutral it can still be heard at times.

 

You said you did a oil change, did you clean your oil spinner, if you did maybe one of the three bolts became loose and is hitting your engine cover. Just a thought.

 

Thanks, yeah, I did just recently do an oil change and cleaned the spinner for the first time. I've ordered 2 new gaskets (engine case and oil spinner) but I'm still waiting on them to arrive. I think my next step is to drain the oil and check inside the engine case. I'd like to wait for the gaskets to arrive just in case they need to be replaced. A threadlocking agent was used on the 3 bolts so I would be surprised if one worked it's way loose. At this point though, I wouldn't rule it out...that dang noise has to be coming from somewhere! I really appreciate everyone's input.


Side note:
Since installing the new chain the noise does seem to be occurring less frequently.

 

This issue ever get resolved?