Yamaha XT bike from mid 1980's

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[quote author=Punkstig link=topic=15120.msg171421#msg171421 date=1414359510]
[quote author=BBROWN1664 link=topic=15120.msg171413#msg171413 date=1414356836]
My experience of shaft drive bikes is that the back rises under acceleration because of the torque which is the opposite of chain drive.

Was the bike really a shafty?

Wut?
[/quote]

Yup. Had a go of a BMW 900(?) Paris/Dakar "replica", a one off built by D & A Rayner m/cs. Didn't notice when going along, but when you shut off the throttle the back end would drop by several cms.
[/quote]
    Never owned a shaft drive but have ridden shaft bikes across the jap makes and moto guzzis, don't remember any particular shaft reaction but for one bike. One mate had an XS750 and that def went up on the throttle and down off it, where the shaft meets the gearbox in relation to the swingarm pivot must be what makes the difference. Possibly.