Possible Clues:

• Mini revolution? It's about time for a sideways turn
• Athlete's revolutionary act liable to get into a rut?
• One may get around to doing this
• Acrobat's manoeuvre holding up farm vehicle?
• In spring, one has a turn being on the wagon
• It's performed by acrobat, one that's on the wagon
• That might be the acrobat's star turn
• Gymnastic feat from one on the wagon
• Is it your turn to do this?
• What 18 down might have performed on the canvas