diff --git a/transmission.scad b/transmission.scad
new file mode 100644
index 0000000..c972ab3
--- /dev/null
+++ b/transmission.scad
@@ -0,0 +1,44 @@
+
+module transmission(hauteur, diametre0, diametre1, diametre2){
+     difference(){
+          cylinder(h=hauteur, r=diametre0/2);
+          translate([0,0,-1]){
+               difference (){
+                    cylinder(h=hauteur-12.35+1, r=diametre0/2+1);
+                    cylinder(h=hauteur-12.35+1, r=diametre1/2);
+               };
+               difference (){
+                    cylinder(h=hauteur-18.85+1, r=diametre1/2+1);
+                    cylinder(h=hauteur-18.85+1, r=diametre2/2);
+               };
+               cylinder(h=13+1, r=2);
+          };
+          translate([0,0,hauteur+1-18]){
+               cylinder(h=18, r=5.6/2);
+          };
+          translate([0,0,17.1/2+1+hauteur-17.1])
+               {
+                    cube([9.6,3.1,17.1+1],center=true);
+                    cube([3.1,9.6,17.1+1],center=true);
+               }
+     }
+}
+
+$fn=100;
+
+transmission(
+     hauteur=31.65,
+     diametre0=14,
+     diametre1=13,
+     diametre2=10.5
+     );
+
+/* base (hauteur=31, diam=34, */
+/*     diam2 = 20.8, diam3 = 22.5, */
+/*     decoupe = 16.9, hcube = 10, */
+/*     halesage=4, dalesage=8, */
+/*     dvis = 4, largeurcroix = 0.7 */
+/* ); */
+
+// translate([diam,0,0])
+//cylinder(h,diam);