Update python models to have accurate constants

This should bring the python models all up to date.  Thanks Sarah for
pulling some of these out of the CAD.

Change-Id: I948685629b8d6835dccd72e623bf110525cb4254
diff --git a/y2020/control_loops/python/intake.py b/y2020/control_loops/python/intake.py
index f65679a..7e95758 100644
--- a/y2020/control_loops/python/intake.py
+++ b/y2020/control_loops/python/intake.py
@@ -17,12 +17,11 @@
 except gflags.DuplicateFlagError:
     pass
 
-#TODO: update constants
 kIntake = angular_system.AngularSystemParams(
     name='Intake',
     motor=control_loop.BAG(),
-    G=(1.0 / 1.0),
-    J=0.3,
+    G=(12.0 / 24.0) * (1.0 / 7.0) * (1.0 / 7.0) * (16.0 / 32.0),
+    J=3.0 * 0.139 * 0.139,
     q_pos=0.20,
     q_vel=5.0,
     kalman_q_pos=0.12,