[twigs808]

Can't pinpoint the source of the noise, at first I thought there was an issue with the electrical/gauges until I hit highway speeds and it was louder than the wind. Sounds like an intermittent chafing of metal pieces. But only when the bike is being fed throttle, and ruled out the possibility of rotors. Any ideas? Attaching a video.

 

[ymracing]

Can't pinpoint the source of the noise, at first I thought there was an issue with the electrical/gauges until I hit highway speeds and it was louder than the wind. Sounds like an intermittent chafing of metal pieces. But only when the bike is being fed throttle, and ruled out the possibility of rotors. Any ideas?

Check your chain and sprockets. Hard to tell with the wind noise, but sounds like badly worn chain and rear sprocket. Chain trying to climb over hooked sprocket teeth under accel.
When you get to noise speed, pull in the clutch, let off throttle. If you have same type of noise during decel, then it's likely.

 

[pdwestman]

Looking at the last few seconds of video, of drive chain. Your drive chain may be adjusted TOO snugly.

The lower chain run NEEDS to be Loose Enough to be able to be lifted UP and just gently touch the rear underside tip of the rubber chain slider on the swingarm.
If it can't touch the rubber, its TOO tight!

 

[twigs808]

Check your chain and sprockets. Hard to tell with the wind noise, but sounds like badly worn chain and rear sprocket. Chain trying to climb over hooked sprocket teeth under accel.
When you get to noise speed, pull in the clutch, let off throttle. If you have same type of noise during decel, then it's likely.

Cracked this baby open and found the previous owner did the doohickey mod, and replaced the original tensioner spring. Too much tension on the timing chains. Re-did my cams and got rid of the extra spring. Runs flawlessly now. Fixed! Thank you guys.

 

[twigs808]

Cracked this baby open and found the previous owner did the doohickey mod, and replaced the original tensioner spring. Too much tension on the timing chains. Re-did my cams and got rid of the extra spring. Runs flawlessly now. Fixed! Thank you guys.

 

[pdwestman]

WOW! Some peoples kids never learn much.