Added a motor -- actually in the epicyclic file, which isn't right, but...

model/epicyclic.scad

@@ -6,6 +6,22 @@
 
 include <SprocketGenerator2/files/Sprocket_Generator_v2_example_10.scad>
 
+// based on this motor here, which is affordable and has a ratchet:
+// https://www.amazon.co.uk/L-faster-Solution-Sprocket-Brushless-Bicycle/dp/B0DCJXV53J/ref=sr_1_275?dib=eyJ2IjoiMSJ9.yUQgRnT20RtAyVb3Decqam4igr7b-1ZoqiviQunNV5DUW73JKvlMfEIZgM3tt3iVQEIV1sDAZ-ZpMznFrqKJoeIGMNBcdyoG_M1vll2XL0GSe87XzbNFjGDpbjE_er-29ncEjr1VioaOmFmC11qAdpYkyhK9n7FrmW3yGSal16k.vMbZrXAMFNJMrFCIivuP6dMH7HyGRdm1qb5VDsBz8eM&dib_tag=se&marketplaceID=A1F83G8C2ARO7P&qid=1757944297&s=merchant-items&sr=1-275&xpid=993o6gj7HOOMv&th=1&psc=1
+module motor () {
+    translate([0,0, 35])
+    color( "silver")
+    cylinder(h=75, r=50);
+    
+    translate([0,40, 5])    
+    color( "silver")
+    cylinder(h=32, r=42);
+  
+    translate([0,40,0])  
+    color( "grey")
+    sprocket( teeth=16, roller=7.9, pitch=12.7);
+}
+
 module epicyclic (olnd=135, disc=1) {
     
     body_width=116; 
@@ -37,10 +53,16 @@ module epicyclic (olnd=135, disc=1) {
         color("grey")
         sprocket(teeth=20, roller=7.9, pitch=12.7);
         
+    // secondary chain sprocket
     translate([0, 0, 0 - ((body_width/2) - spoke_flange_width)])
         color("grey")
         sprocket(teeth=30, roller=7.9, pitch=12.7);
         
+    // motor chain driven sprocket
+    translate([0, 0, 0 - ((body_width/2) - (spoke_flange_width + 10))])
+        color("grey")
+        sprocket(teeth=30, roller=7.9, pitch=12.7);
+        
     // disc brake, if present. TODO: details of disc spider
     if (disc==1) {
         translate([0, 0, (olnd/2) - 7])
@@ -50,4 +72,7 @@ module epicyclic (olnd=135, disc=1) {
 }
 
 // rotate([90, 0, 0])
-//   epicyclic();
+//   epicyclic();
+
+// rotate([90, 0, 0])
+// motor();

model/library/hull-volume-of-rotation.svg

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   width="297mm"
+   height="210mm"
+   viewBox="0 0 297 210"
+   version="1.1"
+   id="svg1"
+   inkscape:version="1.4 (e7c3feb100, 2024-10-09)"
+   sodipodi:docname="hull-volume-of-rotation.svg"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:svg="http://www.w3.org/2000/svg">
+  <sodipodi:namedview
+     id="namedview1"
+     pagecolor="#ffffff"
+     bordercolor="#000000"
+     borderopacity="0.25"
+     inkscape:showpageshadow="2"
+     inkscape:pageopacity="0.0"
+     inkscape:pagecheckerboard="0"
+     inkscape:deskcolor="#d1d1d1"
+     inkscape:document-units="mm"
+     showgrid="true"
+     inkscape:zoom="0.50394254"
+     inkscape:cx="131.95949"
+     inkscape:cy="174.62308"
+     inkscape:window-width="1920"
+     inkscape:window-height="1011"
+     inkscape:window-x="0"
+     inkscape:window-y="32"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="layer1">
+    <inkscape:grid
+       id="grid1"
+       units="mm"
+       originx="0"
+       originy="0"
+       spacingx="0.26458334"
+       spacingy="0.26458333"
+       empcolor="#0099e5"
+       empopacity="0.30196078"
+       color="#0099e5"
+       opacity="0.14901961"
+       empspacing="5"
+       enabled="true"
+       visible="true" />
+  </sodipodi:namedview>
+  <defs
+     id="defs1" />
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1">
+    <path
+       style="fill:none;stroke:#000000;stroke-width:0.1"
+       d="m 23.010024,118.78383 c -0.0218,15.99707 0.0998,31.5583 -1.24345,43.92315 -1.34323,12.36484 -1.87118,17.12578 -5.73833,30.14347 -1.93357,6.50885 -5.30724,11.51286 -8.8115205,14.05866 -3.50427,2.54582 -7.1378,2.63405 -7.1378,2.63405 l -0.002,-0.13776 c 2.56796,-0.2029 5.10944,-1.20587 7.0444,-2.65053 3.4542205,-2.57896 6.8451705,-7.51384 8.7695205,-13.99166 3.84872,-12.95561 4.37415,-17.69387 5.71098,-29.99976 1.33683,-12.30591 1.21578,-27.79296 1.23752,-43.71376 0.0109,-7.9604 -1.14064,-50.760677 -1.42478,-52.560758 l 0.26814,0.0303 c 0,0 1.34926,36.267528 1.32741,52.264598 z"
+       id="path3"
+       sodipodi:nodetypes="zzssccsszsccz" />
+  </g>
+</svg>

model/subframe.scad

@@ -23,28 +23,33 @@ module subframe_cycleparts(rim=451, chainring_teeth=82, crank=140) {
     rotate([90, 0, 90])
         translate([660, 180, -40])
         chainset( teeth=chainring_teeth, crank=crank);
-        
+            
     rotate([0,90,0])
-        translate([-93, 900, 24])
+        translate([-60, 900, 24])
-        epicyclic();   
+        epicyclic();  
+   
+    rotate([0,90,0])
+        translate([-190, 900, -22])
+        motor();   
+ 
 }
 
 
 module aluminium_subframe (rim=451, chainring_teeth=82, crank=140) {
     // front leg (supports cross-shaft, epicyclic, motor
-    translate([-25, 820, -60])
+    translate([-25, 820, -50])
         color("silver")
-        cube([50, 25, 366]);
+        cube([50, 25, 356]);
     // bottom bracket leg
-    translate([-25, 680, -90])
+    translate([-25, 680, -50])
         color("silver")
-        cube([50, 25, 443]);
+        cube([50, 25, 413]);
     
     // wheel leg
-    translate([-100, 345, -111])
+    translate([-100, 345, -50])
         rotate([0, 7, 0])
         color("silver")
-        cube([25, 75, 519]);
+        cube([25, 75, 458]);
     // front upper
     translate([-25, 1100, 200])
         rotate([70, 0, 0])
@@ -56,30 +61,70 @@ module aluminium_subframe (rim=451, chainring_teeth=82, crank=140) {
         color("silver")
         cube([50, 25, 529]);
     // rear leg
-    translate([-25, 0, 0])
+    translate([-25, 0, -50])
-        rotate([-23, 0, 0])
+        rotate([-20, 0, 0])
         color("silver")
-        cube([50, 25, 485]);
+        cube([50, 25, 525]);
-    
+ 
+    // boltdown flange
+    color("grey")
+    translate([0, 0, -50])
+        linear_extrude(height=2.5) 
+            polygon([[-50, 0], [-100, 345], 
+                    [-100, 415], [-50, 700], 
+                    [-50, 850], [50, 850],
+                    [50, 625], [-40, 625],
+                    [-40, 150], [50, 150],
+                    [50, 1070], [50, 0]]);
+ 
     subframe_cycleparts(rim, chainring_teeth, crank);    
 }
 
 /**
- * this is more or less right. I need to sculpt out a depression for
+ * this is more or less right. The corners of the epicyclic/motor
- * the secondary chain, and make a bracket to hold the epicyclic and
+ * bracket should be rounded, and there should be fillets along
- * motor.
+ * every concave join between carbon parts
  */
 module carbon_subframe(rim=451, chainring_teeth=82, crank=140) {
     translate([-25, 0, 0])
-    color("black")
+    color("black", 0.9)
         difference() {
             rotate([90, 0, 90])
                 linear_extrude( height=50)
-                    polygon([[1020, 306], [680, 400], [150,408], [50, 0], [1020, 0]]);
+                    polygon([[1020, 306], [680, 400], [150,408], [0, -50], [1020, -50]]);
             translate([-26, 382, 93])
                 rotate([90,0,90])
                 cylinder( h=100, r=rim * 0.61);
+            translate([-26, 825, 25])
+                cube([150, 150, 200]);
+            translate([-26, 625, 25])
+                cube([10, 200, 150]);
         }
+    // wheel leg
+    translate([-94, 345, -50])
+        rotate([0, 7, 0])
+        color("black")
+        cube([25, 75, 458]);
+        
+    // epicyclic support
+    color("black")
+    translate([-47, 890, 25])
+        difference() {
+            cube([140, 100, 200]);
+            translate([2.5, -2.5, -2.5])
+                cube([135, 100, 205]);
+      }
+      
+    // boltdown flange
+    color("black")
+    translate([0, 0, -50])
+        linear_extrude(height=2.5) 
+            polygon([[-50, 0], [-100, 345], 
+                    [-100, 415], [-50, 700], 
+                    [-50, 850], [50, 850],
+                    [50, 650], [-40, 650],
+                    [-40, 150], [50, 150],
+                    [50, 1070], [50, 0]]);
     
     subframe_cycleparts(rim, chainring_teeth, crank);    
 }
@@ -92,5 +137,5 @@ module subframe( structure="carbon", rim=451, chainring_teeth=82, crank=140) {
     }       
 }
 
-// subframe( structure="carbon");
+// subframe( structure="aluminium");
 

model/tricycle.scad

@@ -10,7 +10,7 @@ include <fourbar.scad>
 
 rotate([0, 0, 270])
 translate([0, 1200, 180])
-subframe();
+subframe(structure="carbon");
 translate([0,-50, 320])
 fourbar(700, 100, 30, 35, 650);