diff --git a/calibrate.py b/calibrate.py
index 97eb55a..3348871 100644
--- a/calibrate.py
+++ b/calibrate.py
@@ -86,10 +86,10 @@ def main():
 
     cpr = 3.1415*38 # 1 rotation in cm
     # milliseconds per 10 degrees clockwise
-    time[2] = int((1000 * cpc)/(cps[2] * 36))
+    time[2] = int((1000 * cpr * cpc)/(cps[2] * 36))
     # milliseconds per 10 degrees anticlockwise
-    time[3] = int((1000 * cpc)/(cps[3] * 36))
-
+    time[3] = int((1000 * cpr * cpc)/(cps[3] * 36))
+    print(cps)
 
     values_hex = "-".join([".".join([str(i) for i in v]) for v in values])
     time_hex = "-".join([str(i) for i in time])