The spares pannier carried in a V Bomber bomb bay when one went on detachment generally contained the Crew Chief's bicycle
There wasn't room for the chiefy's bike in our Valiant's pannier when we left Gan for Butterworth so our chief put his in the top fuselage aft of the fuel tanks. We pilots got the inpression that the ailerons were a bit light when we were in the cruise. Not to worry, we used the autopilot which used a rate gyro to control the rate of roll.
On arrival at Butterorth we found that the bicycle had shifted and spreadeagled itself over the aileron Q feel cans therebye leaving us with only spring feel which was why they were so light.
Very apologetic crew chief; didn't bother to follow it up.