High pitch whine when accelerating

[gohonda]

What would cause a high pitched whine from an accelerating scooter? It's not happening to mine but I passed another scooter and it was making this awful sound. It was not a normal sound you want to hear from a bike.

[Madathlon]

Anything from a gap in body panels to a bearing about to fail. sadly there just not enough info to give you a good answer.

[gohonda]

The sound only happened when he was catching up to traffic. I didn't hear it when he was driving at a consistent speed or stopping. I wasn't beside him for long.

[Madathlon]

Still not enough, location would help. (And not he was heading to McD) Like is it from the front end, or top of his helmet

[Firehawk989]

Probably just the gears in the transmission. They whine a bit under load, some types make more noise than others.

[cheapeto]

I was riding this past weekend with a bunch of rucks,groms,zuma's, I think it was a zuma 50 that when coming to a stop, or on the hard decelarations you do going down mountain roads,working the hairpins.
It would whine down.
The groms were absoluty awsome machines!!
If I was a younger man, this would be my choice for a small motorcycle as I do miss the gear changing at times.