From 6c0d0ce4026b78fa4a7a43ea11836b47c9cd0358 Mon Sep 17 00:00:00 2001
From: maride <maride@darknebu.la>
Date: Thu, 23 Nov 2017 17:51:36 +0100
Subject: [PATCH] A small mono-cylindric motor

---
 Motor.scad | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 Motor.scad

diff --git a/Motor.scad b/Motor.scad
new file mode 100644
index 0000000..2df360a
--- /dev/null
+++ b/Motor.scad
@@ -0,0 +1,66 @@
+CIRCLE_ROUNDS=180;
+
+// Piston
+difference() {
+    // Main Cylinder
+    cylinder(h=10, d=10, $fn=CIRCLE_ROUNDS);
+    
+    // Main cutout
+    rotate([90, 0, 0])
+    translate([0, 1, -5]) {
+        cylinder(h=10, d=8, $fn=CIRCLE_ROUNDS);
+    }
+    translate([-4, -3, 0])
+    cube([8, 6, 1]);
+    
+    // Tapering cutout on the bottom
+    difference() {
+        cylinder(h=5, d=10, $fn=CIRCLE_ROUNDS);
+        cylinder(h=5, d=9, $fn=CIRCLE_ROUNDS);
+    }
+    
+    // gudgeon pin hole
+    rotate([0, 90, 0])
+    translate([-2, 0, -5])
+    cylinder(h=10, d=2, $fn=CIRCLE_ROUNDS);
+}
+
+// Gudgeon pin
+difference() {
+    rotate([0, 90, 0])
+    translate([-2, 0, -4.5])
+    cylinder(h=9, d=2, $fn=CIRCLE_ROUNDS);
+    
+    rotate([0, 90, 0])
+    translate([-2, 0, -4.5])
+    cylinder(h=9, d=1.5, $fn=CIRCLE_ROUNDS);
+}
+
+// Rod
+difference() {
+    union() {
+        // rod shaft
+        translate([-1, -1.5, -13])
+        cube([2, 3, 15]);
+
+        // rod pin hole
+        rotate([90, 0, 90])
+        translate([0, 2, -2])
+        cylinder(h=4, d=4, $fn=CIRCLE_ROUNDS);
+
+        // crankshaft hole
+        rotate([90, 0, 90])
+        translate([0, -13, -2])
+        cylinder(h=4, d=3, $fn=CIRCLE_ROUNDS);
+    }
+    
+    // gudgeon pin cutout
+    rotate([0, 90, 0])
+    translate([-2, 0, -4.5])
+    cylinder(h=9, d=2, $fn=CIRCLE_ROUNDS);
+
+    // crankshaft cutout
+    rotate([0, 90, 0])
+    translate([13, 0, -2])
+    cylinder(h=4, d=2, $fn=CIRCLE_ROUNDS);
+}
\ No newline at end of file