Bridge device failure fix

[Kevin Sevcik]

We came up with this around week 2. Only mistake was direct driving it with a PG71. Worked fine on the practice bridge, but the real thing would've laughed at it. So we're running on a 256:1 P60. After shearing pins, replacing them with PG71 pins and then shearing sun gears, we put a latch on it. Otherwise it works good. An interesting point is that the angle has relatively little effect on the holding torque necessary, unless your pivot is well above 12".