High Pitched Metallic Noise

[tjamrok]

Hey everyone,

I have a 2007 Brammo Ariel Atom 2 with about 4,000 miles. The car has been in storage for a while, after getting it out on the road where it belongs and driving about 300 more miles I noticed an unpleasant, high-pitched metallic whine coming from behind my head. I'm not sure how else to describe it... if I go for a lengthy drive I probably hear it 2 or 3 times during the drive for about 10 seconds or so. I noticed the noise happening at these specific instances (but not every time):

1) 3rd gear while decelerating around 25 mph at about 2,000 RPM
2) 5th gear while decelerating around 40 mph at about 2,000 RPM

I would love to provide more detailed information but I'm not mechanically inclined unfortunately... I am curious if anyone can identify the issue with this limited information or has had this issue in the past? Any information would be helpful, I'd love to provide my mechanic with some details when I bring it after our quarantine is over.

Thanks in advance and drive safely out there!

- tjamrok

[argonaut]

Unfortunately, with so little to go on, any guess will be speculation. I learned long ago that 'noises' coming from a car are nearly impossible to diagnose over the internet or even the phone and can be just as difficult in person. Maybe if you had a video with sound. Sorry - no help.