diff --git a/src/configs/templatecoax.m b/src/configs/templatecoax.m
index 764d9846b52d9475305896807153606437815e48..0c646918ff0b5e1ccad869d1d9561f88bd9a2d21 100644
--- a/src/configs/templatecoax.m
+++ b/src/configs/templatecoax.m
@@ -27,14 +27,15 @@ template; % Just load exisiting template
 % Adds a second element to the blade structure to represent the second rotor
 
 Blade(2) = Blade(1); % Make second rotor identical to first one
+Blade(2).spinDir = -Blade(1).spinDir; % Spin in opposite direction from first rotor
 
+% Shift second rotor w.r.t the application type
 if strcmp(Sim.Misc.appli, 'heli')
-    rotorShift = [0, 0, -1];
+    rotorShift = [0, 0, -1] * Blade(1).radius(end);
 else
-    rotorShift = [-1, 0, 0];
+    rotorShift = [-1, 0, 0] * Blade(1).radius(end);
 end
-Blade(2).hubPos = Blade(1).hubPos + rotorShift; % Shift second rotor w.r.t the application type
-Blade(2).spinDir = -Blade(1).spinDir; % Spin in opposite direction from first rotor
+Blade(2).hubPos = Blade(1).hubPos + rotorShift;
 
 % ==================================================================================================
 % ===================================== Operating points ===========================================
diff --git a/src/utils/preproc/validateconfig.m b/src/utils/preproc/validateconfig.m
index 48696340293827117629d22e62efbdcf681c5470..57fdc42ed1f4ff42a17390f9fa0fbd1ede6b9e40 100644
--- a/src/utils/preproc/validateconfig.m
+++ b/src/utils/preproc/validateconfig.m
@@ -345,6 +345,16 @@ function Blade = checkblade(Blade, configFile, nAirfoils, DEF)
                             '<=', nAirfoils}, ...
                            configFile, 'Blade.iAirfoil');
 
+        validateattributes(Blade(i).hubPos, ...
+                           {'numeric'}, ...
+                           {'vector', 'finite', 'nonnan', 'numel', 3}, ...
+                           configFile, 'Blade.hubPos');
+        validateattributes(Blade(i).spinDir, ...
+                           {'numeric'}, ...
+                           {'scalar', 'integer', 'nonzero', ...
+                            '<=', 1, '>=', -1}, ...
+                           configFile, 'Blade.spinDir');
+
     end
 
     % Discretization