// subframe.scad: 

// (c) Simon Brooke 2025; CC-BY-SA


include <BentSim/Library/Bike_accessories.scad>
include <SprocketGenerator2/files/Sprocket_Generator_v2_example_10.scad>

include <chainset.scad>
include <epicyclic.scad>


module subframe_cycleparts(rim=451, chainring_teeth=82, crank=140) {
        // wheel
    translate([0, 382, 93])
        rotate([0, 0, 90])
        wheel(rim=rim, spoke_nbr=0);
        
    translate([-42, 382, 93])
        rotate([0, 90, 0])
        color("grey")
        sprocket(teeth=30, roller=7.9, pitch=12.7);
        
    rotate([90, 0, 90])
        translate([660, 180, -40])
        chainset( teeth=chainring_teeth, crank=crank);
        
    rotate([0,90,0])
        translate([-93, 900, 24])
        epicyclic();   
}

module subframe (rim=451, chainring_teeth=82, crank=140) {
    // front leg (supports cross-shaft, epicyclic, motor
    translate([-25, 820, -60])
        color("silver")
        cube([50, 25, 366]);
    // bottom bracket leg
    translate([-25, 680, -90])
        color("silver")
        cube([50, 25, 443]);
    
    // wheel leg
    translate([-100, 345, -111])
        rotate([0, 7, 0])
        color("silver")
        cube([25, 75, 519]);
    // front upper
    translate([-25, 1100, 200])
        rotate([70, 0, 0])
        color("silver")
        cube([50, 25, 425]);
    // central upper
    translate([-25, 714, 343])
        rotate([82, 0, 0])
        color("silver")
        cube([50, 25, 529]);
    // rear leg
    translate([-25, 0, 0])
        rotate([-23, 0, 0])
        color("silver")
        cube([50, 25, 485]);
    
    subframe_cycleparts(rim, chainring_teeth, crank);    
}


// subframe(chainring_teeth=90, crank=140);