Added a motor -- actually in the epicyclic file, which isn't right, but...
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@ -6,6 +6,22 @@
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include <SprocketGenerator2/files/Sprocket_Generator_v2_example_10.scad>
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// based on this motor here, which is affordable and has a ratchet:
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// 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
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module motor () {
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translate([0,0, 35])
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color( "silver")
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cylinder(h=75, r=50);
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translate([0,40, 5])
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color( "silver")
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cylinder(h=32, r=42);
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translate([0,40,0])
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color( "grey")
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sprocket( teeth=16, roller=7.9, pitch=12.7);
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}
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module epicyclic (olnd=135, disc=1) {
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body_width=116;
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@ -37,10 +53,16 @@ module epicyclic (olnd=135, disc=1) {
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color("grey")
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sprocket(teeth=20, roller=7.9, pitch=12.7);
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// secondary chain sprocket
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translate([0, 0, 0 - ((body_width/2) - spoke_flange_width)])
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color("grey")
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sprocket(teeth=30, roller=7.9, pitch=12.7);
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// motor chain driven sprocket
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translate([0, 0, 0 - ((body_width/2) - (spoke_flange_width + 10))])
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color("grey")
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sprocket(teeth=30, roller=7.9, pitch=12.7);
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// disc brake, if present. TODO: details of disc spider
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if (disc==1) {
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translate([0, 0, (olnd/2) - 7])
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@ -50,4 +72,7 @@ module epicyclic (olnd=135, disc=1) {
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}
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// rotate([90, 0, 0])
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// epicyclic();
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// epicyclic();
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// rotate([90, 0, 0])
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// motor();
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63
model/library/hull-volume-of-rotation.svg
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63
model/library/hull-volume-of-rotation.svg
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@ -0,0 +1,63 @@
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!-- Created with Inkscape (http://www.inkscape.org/) -->
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<svg
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width="297mm"
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height="210mm"
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viewBox="0 0 297 210"
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version="1.1"
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id="svg1"
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inkscape:version="1.4 (e7c3feb100, 2024-10-09)"
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sodipodi:docname="hull-volume-of-rotation.svg"
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xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
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xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
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xmlns="http://www.w3.org/2000/svg"
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xmlns:svg="http://www.w3.org/2000/svg">
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<sodipodi:namedview
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id="namedview1"
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pagecolor="#ffffff"
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bordercolor="#000000"
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borderopacity="0.25"
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inkscape:showpageshadow="2"
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inkscape:pageopacity="0.0"
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inkscape:pagecheckerboard="0"
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inkscape:deskcolor="#d1d1d1"
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inkscape:document-units="mm"
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showgrid="true"
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inkscape:zoom="0.50394254"
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inkscape:cx="131.95949"
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inkscape:cy="174.62308"
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inkscape:window-width="1920"
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inkscape:window-height="1011"
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inkscape:window-x="0"
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inkscape:window-y="32"
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inkscape:window-maximized="1"
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inkscape:current-layer="layer1">
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<inkscape:grid
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id="grid1"
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units="mm"
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originx="0"
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originy="0"
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spacingx="0.26458334"
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spacingy="0.26458333"
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empcolor="#0099e5"
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empopacity="0.30196078"
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color="#0099e5"
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opacity="0.14901961"
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empspacing="5"
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enabled="true"
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visible="true" />
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</sodipodi:namedview>
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<defs
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id="defs1" />
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<g
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inkscape:label="Layer 1"
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inkscape:groupmode="layer"
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id="layer1">
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<path
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style="fill:none;stroke:#000000;stroke-width:0.1"
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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"
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id="path3"
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sodipodi:nodetypes="zzssccsszsccz" />
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</g>
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</svg>
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After Width: | Height: | Size: 2.3 KiB |
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@ -23,28 +23,33 @@ module subframe_cycleparts(rim=451, chainring_teeth=82, crank=140) {
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rotate([90, 0, 90])
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translate([660, 180, -40])
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chainset( teeth=chainring_teeth, crank=crank);
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rotate([0,90,0])
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translate([-93, 900, 24])
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epicyclic();
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translate([-60, 900, 24])
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epicyclic();
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rotate([0,90,0])
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translate([-190, 900, -22])
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motor();
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}
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module aluminium_subframe (rim=451, chainring_teeth=82, crank=140) {
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// front leg (supports cross-shaft, epicyclic, motor
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translate([-25, 820, -60])
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translate([-25, 820, -50])
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color("silver")
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cube([50, 25, 366]);
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cube([50, 25, 356]);
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// bottom bracket leg
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translate([-25, 680, -90])
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translate([-25, 680, -50])
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color("silver")
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cube([50, 25, 443]);
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cube([50, 25, 413]);
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// wheel leg
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translate([-100, 345, -111])
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translate([-100, 345, -50])
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rotate([0, 7, 0])
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color("silver")
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cube([25, 75, 519]);
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cube([25, 75, 458]);
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// front upper
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translate([-25, 1100, 200])
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rotate([70, 0, 0])
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@ -56,30 +61,70 @@ module aluminium_subframe (rim=451, chainring_teeth=82, crank=140) {
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color("silver")
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cube([50, 25, 529]);
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// rear leg
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translate([-25, 0, 0])
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rotate([-23, 0, 0])
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translate([-25, 0, -50])
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rotate([-20, 0, 0])
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color("silver")
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cube([50, 25, 485]);
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cube([50, 25, 525]);
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// boltdown flange
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color("grey")
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translate([0, 0, -50])
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linear_extrude(height=2.5)
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polygon([[-50, 0], [-100, 345],
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[-100, 415], [-50, 700],
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[-50, 850], [50, 850],
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[50, 625], [-40, 625],
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[-40, 150], [50, 150],
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[50, 1070], [50, 0]]);
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subframe_cycleparts(rim, chainring_teeth, crank);
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}
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/**
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* this is more or less right. I need to sculpt out a depression for
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* the secondary chain, and make a bracket to hold the epicyclic and
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* motor.
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* this is more or less right. The corners of the epicyclic/motor
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* bracket should be rounded, and there should be fillets along
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* every concave join between carbon parts
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*/
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module carbon_subframe(rim=451, chainring_teeth=82, crank=140) {
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translate([-25, 0, 0])
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color("black")
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color("black", 0.9)
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difference() {
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rotate([90, 0, 90])
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linear_extrude( height=50)
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polygon([[1020, 306], [680, 400], [150,408], [50, 0], [1020, 0]]);
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polygon([[1020, 306], [680, 400], [150,408], [0, -50], [1020, -50]]);
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translate([-26, 382, 93])
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rotate([90,0,90])
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cylinder( h=100, r=rim * 0.61);
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translate([-26, 825, 25])
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cube([150, 150, 200]);
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translate([-26, 625, 25])
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cube([10, 200, 150]);
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}
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// wheel leg
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translate([-94, 345, -50])
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rotate([0, 7, 0])
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color("black")
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cube([25, 75, 458]);
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// epicyclic support
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color("black")
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translate([-47, 890, 25])
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difference() {
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cube([140, 100, 200]);
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translate([2.5, -2.5, -2.5])
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cube([135, 100, 205]);
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}
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// boltdown flange
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color("black")
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translate([0, 0, -50])
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linear_extrude(height=2.5)
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polygon([[-50, 0], [-100, 345],
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[-100, 415], [-50, 700],
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[-50, 850], [50, 850],
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[50, 650], [-40, 650],
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[-40, 150], [50, 150],
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[50, 1070], [50, 0]]);
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subframe_cycleparts(rim, chainring_teeth, crank);
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}
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@ -92,5 +137,5 @@ module subframe( structure="carbon", rim=451, chainring_teeth=82, crank=140) {
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}
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}
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// subframe( structure="carbon");
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// subframe( structure="aluminium");
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@ -10,7 +10,7 @@ include <fourbar.scad>
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rotate([0, 0, 270])
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translate([0, 1200, 180])
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subframe();
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subframe(structure="carbon");
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translate([0,-50, 320])
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fourbar(700, 100, 30, 35, 650);
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