diff --git a/game/systems/s_entity.c b/game/systems/s_entity.c
index 17e551a..b6ad905 100644
--- a/game/systems/s_entity.c
+++ b/game/systems/s_entity.c
@@ -146,7 +146,11 @@ static void entityUpdateArm(ecs_entity_t armEntity, Position pos, Velocity vel,
     if (!armEntity) return;
     const Arm arm = *ecs_get(ECS, armEntity, Arm);
 
-    Vector2 v = {arm.extended, 0.0f};
+    f32 time = fmod(GetTime() * 2.0f, 2.0f);
+    if (time > 1.0f) time = 2.0f - time;
+
+    f32 velLen = Clamp(Vector2Length(vel), 0, 4.0f) * time;
+    Vector2 v = {arm.extended, velLen};
     v = Vector2Rotate(v, orient + arm.offset);
     v = Vector2Add(v, pos);
     ecs_set_ptr(ECS, armEntity, Position, &v);