Well I've had my first bit of trouble with the bike. I was coming back from a longish journey, pulling up a hill I heard a bang, the the back wheel locked up completely, fishtailing the bike, then a grinding noise... I managed to yank the bike onto the pavement(not an easy task with the wheel still completely locked up) and saw that the chain had come off and caused quite a bit of damage to the chain guard and the general area around the back sprocket. I then removed some of the covers to get to the front sprocket and the chain had wrapped around three times completely jamming itself up against the engine casing. Just as I was about to loose my rag a bloke tapped me on the shoulder "need a hand mate?"... a sneaky AA man who saw a new customer with no other options. So long story short I had to sign up, pay the man all my monies and watch as he used what I would consider excessive force to loosen the chain from this tangled mess. The bike got me home but will obviously need a new chain and sprocket and a little looking over by a professional. So my question is basically, any ideas on what might have caused this? It got its m.o.t two days before this happened, the tension of the chain was fine and the chain and sprocket we're only a few months old... on reflection, the bike did make a clunking sound sometimes when taking a corner and it was on a bend when the chain came off. I also think that the bang when the chain came off was the extreme result of this clunking I had heard before. So yeah any advice or clues about what it could be would be great, please note I have only had the bike a month or so and am new to riding so my technical knowledge is sparse.
What does a clunking noise when going round corners mean?