diff --git a/src/action.rs b/src/action.rs
index 41b936c..b0acb3a 100644
--- a/src/action.rs
+++ b/src/action.rs
@@ -1,132 +1,30 @@
-use bevy::{
-    prelude::*,
-    render::mesh::{Indices, VertexAttributeValues},
-};
-#[allow(unused_imports)]
-use bevy_rapier3d::{na::Vector3, physics::PhysicsSystems::StepWorld, prelude::*};
+use bevy::prelude::*;
+use bevy_rapier3d::{na::Vector3, prelude::*};
 
-use crate::{
-    geometry::{CyberBike, CyberSphere, PLANET_RADIUS, SPAWN_ALTITUDE},
-    input::InputState,
-};
+use crate::{geometry::CyberBike, input::InputState};
 
-/// Mouse sensitivity and movement speed
 pub struct MovementSettings {
     pub sensitivity: f32,
     pub accel: f32,
+    pub gravity: f32,
 }
 
 impl Default for MovementSettings {
     fn default() -> Self {
         Self {
-            sensitivity: 1.0,
-            accel: 40.,
+            sensitivity: 10.0,
+            accel: 20.0,
+            gravity: 9.8,
         }
     }
 }
 
-fn setup_colliders(
-    mut commands: Commands,
-    meshes: Res<Assets<Mesh>>,
-    planet_query: Query<(Entity, &Handle<Mesh>), With<CyberSphere>>,
-    bike_query: Query<(Entity, &Transform), With<CyberBike>>,
+fn gravity(
+    xform: Query<&Transform, With<CyberBike>>,
+    settings: Res<MovementSettings>,
+    mut config: ResMut<RapierConfiguration>,
 ) {
-    let (planet, mesh_handle) = planet_query.single();
-
-    let mesh = meshes.get(mesh_handle).unwrap();
-
-    let mut shape = ColliderShape::ball(PLANET_RADIUS);
-
-    let vertices = mesh.attribute(Mesh::ATTRIBUTE_POSITION).unwrap();
-    if let VertexAttributeValues::Float32x3(verts) = vertices {
-        if let Some(Indices::U32(indices)) = mesh.indices() {
-            let mut idxs = Vec::new();
-            for idx in indices.chunks_exact(3) {
-                idxs.push([idx[0], idx[1], idx[2]]);
-            }
-            let vertices = verts
-                .iter()
-                .map(|p| Point::from_slice(p))
-                .collect::<Vec<Point<_>>>();
-
-            shape = ColliderShape::trimesh(vertices, idxs);
-        }
-    }
-
-    let pbody = RigidBodyBundle {
-        body_type: RigidBodyType::Static.into(),
-        ccd: RigidBodyCcd {
-            ccd_enabled: true,
-            ccd_thickness: 2.0,
-            ccd_max_dist: SPAWN_ALTITUDE,
-            ..Default::default()
-        }
-        .into(),
-        ..Default::default()
-    };
-    let pcollide = ColliderBundle {
-        shape: shape.into(),
-        material: ColliderMaterial {
-            friction: 0.05,
-            restitution: 0.00,
-            ..Default::default()
-        }
-        .into(),
-        ..Default::default()
-    };
-
-    commands
-        .entity(planet)
-        .insert_bundle(pbody)
-        .insert_bundle(pcollide);
-
-    // bike is the easy part
-    let (bike, xform) = bike_query.single();
-    setup_bike_collider(bike, xform, &mut commands);
-}
-
-fn setup_bike_collider(bike: Entity, xform: &Transform, commands: &mut Commands) {
-    let mut bbody = RigidBodyBundle::default();
-
-    bbody.damping.angular_damping = 0.8;
-    bbody.damping.linear_damping = 0.1;
-
-    bbody.ccd = RigidBodyCcd {
-        ccd_enabled: true,
-        ccd_thickness: 0.7,
-        ccd_max_dist: 1.5,
-        ..Default::default()
-    }
-    .into();
-
-    let isometry = Isometry::from_parts(xform.translation.into(), xform.rotation.into());
-    bbody.position = isometry.into();
-    // collider
-    let shape = ColliderShape::capsule(
-        Vec3::new(0.0, 0.0, -1.25).into(),
-        Vec3::new(0.0, 0.0, 1.25).into(),
-        0.4,
-    );
-    let bcollide = ColliderBundle {
-        shape: shape.into(),
-        mass_properties: ColliderMassProps::Density(0.6).into(),
-        material: ColliderMaterial {
-            friction: 0.0,
-            restitution: 0.0,
-            ..Default::default()
-        }
-        .into(),
-        ..Default::default()
-    };
-    commands
-        .entity(bike)
-        .insert_bundle(bbody)
-        .insert_bundle(bcollide)
-        .insert(ColliderPositionSync::Discrete);
-}
-
-fn gravity(xform: Query<&Transform, With<CyberBike>>, mut config: ResMut<RapierConfiguration>) {
-    let gravity = xform.single().translation.normalize() * -7.80;
+    let gravity = xform.single().translation.normalize() * -settings.gravity;
     config.gravity = gravity.into();
 }
 
@@ -145,7 +43,18 @@ fn falling_cat(
     forces.torque = torque.into();
 }
 
-fn update_forces(
+fn drag(
+    mut query: Query<(&RigidBodyVelocityComponent, &mut RigidBodyForcesComponent), With<CyberBike>>,
+) {
+    let (vels, mut forces) = query.single_mut();
+
+    if let Some(vel) = vels.linvel.try_normalize(0.001) {
+        let v2 = vels.linvel.magnitude_squared();
+        forces.force -= vel * v2 * 0.002;
+    }
+}
+
+fn input_forces(
     settings: Res<MovementSettings>,
     input: Res<InputState>,
     mut query: Query<
@@ -171,29 +80,14 @@ fn update_forces(
     forces.torque += torque;
 }
 
-fn drag(
-    mut query: Query<(&RigidBodyVelocityComponent, &mut RigidBodyForcesComponent), With<CyberBike>>,
-) {
-    let (vels, mut forces) = query.single_mut();
-
-    if let Some(vel) = vels.linvel.try_normalize(0.001) {
-        let v2 = vels.linvel.magnitude_squared();
-        forces.force -= vel * v2 * 0.002;
-    }
-}
-
 pub struct CyberActionPlugin;
 impl Plugin for CyberActionPlugin {
     fn build(&self, app: &mut App) {
         app.init_resource::<MovementSettings>()
             .add_plugin(RapierPhysicsPlugin::<NoUserData>::default())
-            .add_startup_system_to_stage(
-                StartupStage::PostStartup,
-                setup_colliders.label("colliders"),
-            )
             .add_system(gravity)
             .add_system(falling_cat.label("cat"))
-            .add_system(drag.label("drag").after("uforces"))
-            .add_system(update_forces.label("uforces").after("cat"));
+            .add_system(drag.label("drag").after("iforces"))
+            .add_system(input_forces.label("iforces").after("cat"));
     }
 }
diff --git a/src/colliders.rs b/src/colliders.rs
new file mode 100644
index 0000000..086c1db
--- /dev/null
+++ b/src/colliders.rs
@@ -0,0 +1,119 @@
+use bevy::{
+    prelude::*,
+    render::mesh::{Indices, VertexAttributeValues},
+};
+use bevy_rapier3d::prelude::*;
+
+use crate::geometry::{CyberBike, CyberSphere, PLANET_RADIUS, SPAWN_ALTITUDE};
+
+fn setup_colliders(
+    mut commands: Commands,
+    meshes: Res<Assets<Mesh>>,
+    planet_query: Query<(Entity, &Handle<Mesh>), With<CyberSphere>>,
+    bike_query: Query<(Entity, &Transform), With<CyberBike>>,
+) {
+    let (planet, mesh_handle) = planet_query.single();
+
+    let mesh = meshes.get(mesh_handle).unwrap();
+
+    let mut shape = ColliderShape::ball(PLANET_RADIUS);
+
+    let vertices = mesh.attribute(Mesh::ATTRIBUTE_POSITION).unwrap();
+    if let VertexAttributeValues::Float32x3(verts) = vertices {
+        if let Some(Indices::U32(indices)) = mesh.indices() {
+            let mut idxs = Vec::new();
+            for idx in indices.chunks_exact(3) {
+                idxs.push([idx[0], idx[1], idx[2]]);
+            }
+            let vertices = verts
+                .iter()
+                .map(|p| Point::from_slice(p))
+                .collect::<Vec<Point<_>>>();
+
+            shape = ColliderShape::trimesh(vertices, idxs);
+        }
+    }
+
+    let pbody = RigidBodyBundle {
+        body_type: RigidBodyType::Static.into(),
+        ccd: RigidBodyCcd {
+            ccd_enabled: true,
+            ccd_thickness: 2.0,
+            ccd_max_dist: SPAWN_ALTITUDE,
+            ..Default::default()
+        }
+        .into(),
+        ..Default::default()
+    };
+    let pcollide = ColliderBundle {
+        shape: shape.into(),
+        material: ColliderMaterial {
+            friction: 0.05,
+            restitution: 0.00,
+            ..Default::default()
+        }
+        .into(),
+        ..Default::default()
+    };
+
+    commands
+        .entity(planet)
+        .insert_bundle(pbody)
+        .insert_bundle(pcollide);
+
+    // bike is the easy part
+    let (bike, xform) = bike_query.single();
+    setup_bike_collider(bike, xform, &mut commands);
+}
+
+fn setup_bike_collider(bike: Entity, xform: &Transform, commands: &mut Commands) {
+    let mut bbody = RigidBodyBundle::default();
+
+    bbody.damping.angular_damping = 0.8;
+    bbody.damping.linear_damping = 0.1;
+    bbody.activation = RigidBodyActivation::cannot_sleep().into();
+
+    bbody.ccd = RigidBodyCcd {
+        ccd_enabled: true,
+        ccd_thickness: 0.7,
+        ccd_max_dist: 1.5,
+        ..Default::default()
+    }
+    .into();
+
+    let isometry = Isometry::from_parts(xform.translation.into(), xform.rotation.into());
+    bbody.position = isometry.into();
+    // collider
+    let shape = ColliderShape::capsule(
+        Vec3::new(0.0, 0.0, -1.25).into(),
+        Vec3::new(0.0, 0.0, 1.25).into(),
+        0.4,
+    );
+    let bcollide = ColliderBundle {
+        shape: shape.into(),
+        mass_properties: ColliderMassProps::Density(0.6).into(),
+        material: ColliderMaterial {
+            friction: 0.0,
+            restitution: 0.0,
+            ..Default::default()
+        }
+        .into(),
+        ..Default::default()
+    };
+    commands
+        .entity(bike)
+        .insert_bundle(bbody)
+        .insert_bundle(bcollide)
+        .insert(ColliderPositionSync::Discrete);
+}
+
+pub struct CyberCollidersPlugin;
+impl Plugin for CyberCollidersPlugin {
+    fn build(&self, app: &mut App) {
+        //
+        app.add_startup_system_to_stage(
+            StartupStage::PostStartup,
+            setup_colliders.label("colliders"),
+        );
+    }
+}
diff --git a/src/geometry.rs b/src/geometry.rs
index 87b0eb8..62a2142 100644
--- a/src/geometry.rs
+++ b/src/geometry.rs
@@ -22,7 +22,7 @@ fn spawn_giant_sphere(
     mut meshes: ResMut<Assets<Mesh>>,
     mut materials: ResMut<Assets<StandardMaterial>>,
 ) {
-    let color = Color::rgb(0.2, 0.17, 0.2);
+    let color = Color::rgb(0.2, 0.1, 0.2);
     let isphere = shape::Icosphere {
         radius: PLANET_RADIUS,
         subdivisions: 79,
diff --git a/src/lib.rs b/src/lib.rs
index 13e9be9..a218813 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,6 +5,7 @@ use bevy::{
 
 pub mod action;
 pub mod camera;
+pub mod colliders;
 pub mod geometry;
 pub mod glamor;
 pub mod input;
diff --git a/src/main.rs b/src/main.rs
index 892da6d..2a96bbe 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,6 +2,7 @@ use bevy::prelude::*;
 use cyber_rider::{
     action::{CyberActionPlugin, MovementSettings},
     camera::CyberCamPlugin,
+    colliders::CyberCollidersPlugin,
     disable_mouse_trap,
     geometry::CyberGeomPlugin,
     glamor::CyberGlamorPlugin,
@@ -11,8 +12,9 @@ use cyber_rider::{
 };
 
 const MOVEMENT_SETTINGS: MovementSettings = MovementSettings {
-    sensitivity: 10.0, // default: 1.0
-    accel: 30.0,       // default: 40.0
+    sensitivity: 10.0, // steering
+    accel: 30.0,       // thrust
+    gravity: 8.0,
 };
 
 fn main() {
@@ -33,6 +35,7 @@ fn main() {
         .add_plugin(CyberCamPlugin)
         .add_plugin(CyberSpaceLightsPlugin)
         .add_plugin(CyberUIPlugin)
+        .add_plugin(CyberCollidersPlugin)
         .add_startup_system(disable_mouse_trap)
         .add_system(bevy::input::system::exit_on_esc_system);