Breaking was one of the main reasons for them, also shock absorbing. They did very little turning on the ground. The pit crew would point them into the wind and off they went. They came up on step almost at once then it was all rudder. Landing they got as close to the hangers as they could then the ground crew came out with the tail dollys and pulled them into ther hanger or parking area. My big surprise when I got into WW1 bipes was there lack of throttle on most of them. Those were some outstanding pilots just to get them off the ground.