diff --git a/src/sherpa/urdf/components/wheel.xacro b/src/sherpa/urdf/components/wheel.xacro
index 24599ca..6978164 100644
--- a/src/sherpa/urdf/components/wheel.xacro
+++ b/src/sherpa/urdf/components/wheel.xacro
@@ -64,6 +64,8 @@
1.5
1.2
+ 1000000
+ 100
0.1