The control wheels operate the elevator and ailerons mechanically through a system of cables, pulleys, push-pull tubes and bell cranks.
12.
Mechanically, Horstmann shares much in common with the Christie suspension, which also uses a bell crank and ( mostly ) horizontal spring.
13.
The suspension consisted of three bogies per side each formed of two bell cranks arranged as " scissors " with springs at the top.
14.
Horstmann suspension was a variation which used a combination of bell crank and exterior coil springs, in use from the 1930s to the 1990s.
15.
The hold-down pin had not retracted due to a sheared retaining bolt in the bell crank pulley system in the right launcher arm.
16.
At intervals a box was fitted between the rails that contained a stud ( which protruded about above the road ) and a bell crank.
17.
In forward motion, the yoke was pushed forward, so that its upper pivot was in front of the bell crank-main link connection.
18.
The brazed lug tubular frame was fully sprung with quarter elliptic rear springs and'girder'front forks with horizontal springs compressed through bell crank levers.
19.
One end of the Bell crank lever is connected to the pipe P, the other end is connected to the spring by the tie rod.
20.
The steering complexity was solved by connecting only the front pair of wheels to the steering wheel, and connecting the rear set to the front with a bell crank.
