whiney from engine

i don't if it's my imagineation but i think i've got a whine from the engine that matches the engining reving.

any ideas what it could be? even if it is just my imagination??

Ben

My '08 SDR doesn't have 200 miles yet and it makes a very quiet whine. The cams are driven by a gear that is chain driven, and I think the sound you hear is cam gear whine which is normal. My friend's Adventurer makes the same noise at 4,000 miles. I like the sound.