diff --git a/controller/controller.ino b/controller/controller.ino
index 0643538..9d63c9d 100644
--- a/controller/controller.ino
+++ b/controller/controller.ino
@@ -412,8 +412,8 @@ void loop() {
         //calculate speed l and r from speed and steer
         #define SPEED_COEFFICIENT_NRF   1  // higher value == stronger
         #define STEER_COEFFICIENT_NRF   0.5  // higher value == stronger
-        out_speedl = constrain(set_speed * SPEED_COEFFICIENT_NRF +  set_steer * STEER_COEFFICIENT_NRF, -1000, 1000);
-        out_speedr = constrain(set_speed * SPEED_COEFFICIENT_NRF -  set_steer * STEER_COEFFICIENT_NRF, -1000, 1000);
+        out_speedl = constrain(set_speed * SPEED_COEFFICIENT_NRF +  set_steer * STEER_COEFFICIENT_NRF, -1500, 1500);
+        out_speedr = constrain(set_speed * SPEED_COEFFICIENT_NRF -  set_steer * STEER_COEFFICIENT_NRF, -1500, 1500);
 
         /*
           Serial.print("Out steer=");