simon/tricycle-mechanical-design
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Greatly improved pedal; both secondary chain sprockets in place.

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This commit is contained in:
Simon Brooke 2025-09-06 07:53:11 +01:00
parent 68b34d2f35
commit 012a888b85
4 changed files with 55 additions and 26 deletions
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18
model/subframe.scad
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@ -12,31 +12,31 @@ include <epicyclic.scad>
module subframe () {
// front leg (supports cross-shaft, epicyclic, motor
translate([-25, 1820, -550])
color("grey")
color("silver")
cube([50, 25, 230]);
// bottom bracket leg
translate([-25, 1690, -578])
color("grey")
color("silver")
cube([50, 25, 310]);
// wheel leg
translate([-70, 1430, -593])
rotate([0, 5, 0])
color("grey")
color("silver")
cube([25, 75, 363]);
// front upper
translate([-25, 2000, -385])
rotate([70, 0, 0])
color("grey")
color("silver")
cube([50, 25, 330]);
// central upper
translate([-25, 1700, -275])
rotate([82, 0, 0])
color("grey")
color("silver")
cube([50, 25, 370]);
// rear leg
translate([-25, 1200, -515])
rotate([-23, 0, 0])
color("grey")
color("silver")
cube([50, 25, 344]);
// wheel
@ -46,6 +46,12 @@ module subframe () {
scale([0.70, 0.70, 0.70])
wheel(rim=451, spoke_nbr=0);
translate([-30, 1467.5, -450])
rotate([0, 90, 0])
color("grey")
sprocket(teeth=30, roller=7.9, pitch=12.7);
rotate([90, 0, 90])
translate([1680, -410, -40])
chainset( teeth=82, crank=140);