Added the new model files!

model/chainset.scad

@@ -0,0 +1,77 @@
+// chainset.scad
+
+// (c) Simon Brooke 2025; CC-BY-SA
+// Derived from Hampus Andersson's Sprocket Generator
+
+
+include <SprocketGenerator2/files/Sprocket_Generator_v2_example_10.scad>
+
+include <pedal.scad>
+
+include <BOSL2/std.scad>
+
+function sprocket_radius(teeth=52, roller=7.9, pitch=12.7) = let(roller_radius = roller/2,
+                radius = pitch/(2*sin(180/teeth)))
+                sqrt((radius*radius) - (pitch*(roller_radius+tolerance))+((roller_radius+tolerance)*(roller_radius+tolerance)));
+	
+
+module chainring( teeth=52, roller=7.9, pitch=12.7) {
+    radius = sprocket_radius(teeth=teeth, roller=roller, pitch=pitch);
+    
+    echo( "Radius=", radius, "mm");
+
+    difference() {
+        color("grey")
+        sprocket( teeth=teeth, roller=roller, pitch=pitch);
+        
+        translate([0, 0, -10])
+        cylinder(h=20, r=radius*.75);
+    }
+}
+
+module spider(radius, arms) {
+    for(i=[0:1:5])
+        rotate([0,90,i*(360/5)])
+            color("grey")
+            prismoid(size1=[7, radius/5], size2=[5, radius/7], height=radius*.9);
+}
+
+
+module chainset(teeth=53, arms=5, crank=172, bbshell=68) {
+    radius = sprocket_radius(teeth=teeth);
+    
+    chainring(teeth=teeth);
+    spider(radius*.9, 5);
+    
+    // cranks
+    rotate([0, 90, 0])
+    translate([6, 0, -10])
+    color("grey")
+    prismoid(size1=[10, 25], size2=[7, 18], h=crank+20);
+ 
+    rotate([0, 90, 180])
+    translate([0 - (12+bbshell), 0, -10])
+    color("grey")
+    prismoid(size1=[10, 25], size2=[7, 18], h=crank +20);
+    
+    // pedals
+    translate([0-crank, 0, 20 + bbshell])
+        pedal();
+    translate([crank, 0, 0-4])
+        mirror([0, 0, 1])
+        pedal();
+    
+    translate([0, 0, 5])
+    color("black")
+    cylinder(h=bbshell, r=17);
+    
+    translate([0, 0, -5])
+    color("black")
+    cylinder(h= bbshell+20, r=6);
+    
+}
+
+// chainring();
+// spider(90, 1);
+
+chainset(teeth=82, crank=140);