diff -r b8b5c82eb61b -r a386e1cdc468 hedgewars/uGearsUtils.pas
--- a/hedgewars/uGearsUtils.pas	Fri Oct 11 00:07:23 2013 +0200
+++ b/hedgewars/uGearsUtils.pas	Fri Oct 11 10:42:50 2013 -0400
@@ -1254,7 +1254,7 @@
             Gear^.X:= int2hwFloat(PlayWidth)*int2hwFloat(min(max(0,hwRound(Gear^.Y)),PlayHeight))/PlayHeight;
             Gear^.Y:= int2hwFloat(cWaterLine+cVisibleWater+Gear^.Radius*2);
             tdx:= Gear^.dX;
-            Gear^.dX:= Gear^.dY;
+            Gear^.dX:= -Gear^.dY;
             Gear^.dY:= tdx;
             Gear^.dY.isNegative:= true
             end