e/Shaft effect

Information
has gloss	eng: The shaft effect, also known as elevator effect or shaft jacking, is a phenomenon occurring in shaft-drive motorcycles. While accelerating, the rear suspension stiffens and the machine lifts itself, when decelerating the rear suspension is compressed giving the opposite effect. It is considered to be a drawback to some traditional shaft-drive designs.
lexicalization	eng: Shaft effect
instance of	c/Motorcycle transmissions