Initial tuning on the DT and Shooter

Change-Id: I68fc6d3055c3568b24248f022911ce0113728793
diff --git a/y2017/control_loops/python/drivetrain.py b/y2017/control_loops/python/drivetrain.py
index 8a65128..e722c86 100755
--- a/y2017/control_loops/python/drivetrain.py
+++ b/y2017/control_loops/python/drivetrain.py
@@ -31,7 +31,7 @@
     # Moment of inertia of the drivetrain in kg m^2
     self.J = 2.0
     # Mass of the robot, in kg.
-    self.m = 24
+    self.m = 50
     # Radius of the robot, in meters (requires tuning by hand)
     self.rb = 0.59055 / 2.0
     # Radius of the wheels, in meters.