abstract | - Sirius Black's motorbike was a motorcycle owned by Sirius Black. It has a large engine (suggested by the noise made when active and that it can carry a sidecar). Book references to "its exhaust pipe" in the definite singular show that, if, as likely, it had more than one cylinder, they all blew into one exhaust pipe, which is likelier for a vee-twin then for a parallel twin engine. It also appears to have a kickstart. Magic made it much larger than when it was manufactured, emitting a very loud roar. When Hagrid rides it, it is large enough to fit him, a half-giant, and still can carry an ordinary-size person in its sidecar,. Another spell made it able to fly, fast enough to compete with a broomstick.
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