Horrible Noise Under Acceleration.

[unfazed]

Missed this as I have not been on here with a week. It is very possible you had a small stone stuck in the brakes or sprocket area, makes an incredible racket as if the the bike is going to fall to bits. First happened many many years ago coming out of Birmingham and I though the bike was was going to fall apart and it was a two month old 400 four Honda.  Stopped on the side of the motorway to have a look andfound nothing wrong pushed the bike back and forward a few times to see where the noise was coming from. No sound, decided to start the bike and then rode off very cautiously and it was running perfectly. Never had any issue afterwards it baffled. When I got home I was saying it to a mechanic and he said it was most likey a small stone. stuck somewhere.However I would remove the wheels and check the bearings to be safe