From 736baabfe1ed8f6357f62549dd1ea4e31bfd239a Mon Sep 17 00:00:00 2001
From: "Jan \"Yenya\" Kasprzak" <kas@fi.muni.cz>
Date: Thu, 16 Nov 2017 14:50:39 +0100
Subject: [PATCH] rc plane wheel: curved spokes, stronger center, stoppres

---
 rc-plane-wheel.scad | 84 +++++++++++++++++++++++++++++++++++++--------
 1 file changed, 70 insertions(+), 14 deletions(-)

diff --git a/rc-plane-wheel.scad b/rc-plane-wheel.scad
index cd843f9..81613fc 100644
--- a/rc-plane-wheel.scad
+++ b/rc-plane-wheel.scad
@@ -13,11 +13,47 @@ min_wall = 0.5;
 spokes = 5;
 spoke_w =  3.5;
 spoke_h = 1.5;
+spoke_xoff = 10;
+spoke_r = 15;
+spoke_center_h = 5;
 
-center_d = 5;
-center_hole = 1 + 0.5;
+center_d = 12;
+center_d2 = 6;
+center_hole = 1.2 + 1;
 center_h = 8;
 
+module spoke() {
+	intersection() {
+		translate([-spoke_r, spoke_xoff, 0])
+		rotate_extrude($fn = 128) {
+			translate([spoke_r, 0, 0])
+			polygon(points = [
+				[-spoke_w/2, 0], [spoke_w/2, 0],
+				[spoke_w/2, min_wall], [min_wall/2, spoke_h],
+				[-min_wall/2, spoke_h],
+				[-spoke_w/2, min_wall]]
+			);
+		}
+		cylinder(r = wheel_d/2, h = infty);
+		translate([-infty/2, spoke_xoff, 0]) cube(infty);
+	}
+	hull() {
+		// front bottom
+		translate([-spoke_w/2, spoke_xoff, 0])
+			cube([spoke_w, eps, min_wall]);
+		// front top
+		translate([-min_wall/2, spoke_xoff, 0])
+			cube([min_wall, eps, spoke_h]);
+		// center bottom
+		translate([-spoke_w, 0, 0])
+			cube([2*spoke_w, eps, min_wall]);
+		// center top
+		translate([-min_wall/2, 0, spoke_center_h])
+			cube([min_wall, eps, eps]);
+	}
+			
+}
+
 module body() {
 	// rim
 	difference() {
@@ -38,20 +74,40 @@ module body() {
 	// spokes
 	for (a = [0:360/spokes:360-eps]) {
 		rotate([0, 0, a])
-		hull() {
-			translate([-spoke_w/2, 0, 0])
-				cube([spoke_w, wheel_d/2 - min_wall/2, min_wall]);
-			translate([-min_wall/2, 0, spoke_h-eps])
-				cube([min_wall, wheel_d/2 - min_wall/2, eps]);
-		}
+		spoke();
 	}
 
-	cylinder(r1 = center_d/2, r2 = center_hole/2 + 2*min_wall, h = center_h);
+	// center cylinders
+	cylinder(r1 = center_d/2, r2 = center_d2/2, h = center_h/2+eps, $fn = 4*spokes);
+	translate([0, 0, center_h/2])
+		cylinder(r1 = center_d2/2, r2 = center_hole/2 + 2*min_wall, h = center_h/2, $fn = 4*spokes);
 }
 
-difference() {
-	body();
-	// center hole
-	translate([0, 0, -eps])
-		cylinder(r = center_hole/2, h = center_h + 2*eps);
+module wheel() {
+	difference() {
+		body();
+		// center hole
+		translate([0, 0, -eps])
+			cylinder(r = center_hole/2, h = center_h + 2*eps);
+	}
+}
+
+stopper_d = 6;
+stopper_h = 3;
+stopper_hole = 1.2 + 0.5;
+
+module stopper() {
+	difference() {
+		cylinder(r1 = stopper_d/2, r2 = stopper_hole/2 + 2*min_wall, h = stopper_h);
+		translate([0, 0, -eps])
+			cylinder(r = stopper_hole/2, h = stopper_h + 2*eps);
+	}
+}
+
+for (y = [-1, 1]) scale([1, y, 1]) translate([0, wheel_d/2 + 3, 0]) {
+	wheel();
+
+	translate([wheel_d/2 + stopper_d, 0, 0])
+		stopper();
 }
+		
-- 
2.43.0