diff --git a/scaffoldmaker/meshtypes/meshtype_3d_heartventricles1.py b/scaffoldmaker/meshtypes/meshtype_3d_heartventricles1.py
index f2f772f3..351cf450 100644
--- a/scaffoldmaker/meshtypes/meshtype_3d_heartventricles1.py
+++ b/scaffoldmaker/meshtypes/meshtype_3d_heartventricles1.py
@@ -30,14 +30,14 @@ def getDefaultOptions():
             'Number of elements through LV wall' : 1,
             'LV wall thickness' : 0.15,
             'LV wall thickness ratio apex' : 0.5,
-            'LV wall thickness ratio base': 0.75,
+            'LV wall thickness ratio base': 0.8,
             'LV base flatten ratio': 0.75,
             'LV base flatten angle degrees': 0.0,
             'RV free wall thickness' : 0.05,
-            'RV width' : 0.15,
+            'RV width' : 0.2,
             'Length ratio' : 2.0,
             'Element length ratio equator/apex' : 1.0,
-            'Septum arc angle degrees' : 130.0,
+            'Septum arc angle degrees' : 125.0,
             'Use cross derivatives' : False
         }
 
diff --git a/scaffoldmaker/meshtypes/meshtype_3d_heartventriclesbase1.py b/scaffoldmaker/meshtypes/meshtype_3d_heartventriclesbase1.py
index 265997b5..e76f6b4b 100644
--- a/scaffoldmaker/meshtypes/meshtype_3d_heartventriclesbase1.py
+++ b/scaffoldmaker/meshtypes/meshtype_3d_heartventriclesbase1.py
@@ -33,15 +33,19 @@ def getDefaultOptions():
         options['Number of elements across septum'] = 5
         options['Number of elements below septum'] = 2
         options['Number of elements through LV wall'] = 1
+        # additional defaults for heartventricles1:
+        options['Element length ratio equator/apex'] = 0.5
+        options['LV base flatten angle degrees'] = 25.0
+        options['Length ratio'] = 1.8
         # additional options
         options['Base height'] = 0.1
         options['Base thickness'] = 0.05
-        options['LV outlet inner diameter'] = 0.25
+        options['LV outlet inner diameter'] = 0.3
         options['LV outlet wall thickness'] = 0.02
-        options['RV outlet inner diameter'] = 0.25
+        options['RV outlet inner diameter'] = 0.3
         options['RV outlet wall thickness'] = 0.02
         options['Outlet element length'] = 0.1
-        options['Outlet rotation degrees'] = 0.0
+        options['Outlet rotation degrees'] = 5.0
         return options
 
     @staticmethod