shaftangle=5.340021;   // as taken from boat...scad

// shaft to motor hub + motor is 56mm long
hubnmotor=56;

$fn=50;

 module boltholes(rad){  // three holes for attaching mount to glueable base
                       translate([10,10,-1])cylinder(9,rad,rad);
                       translate([30,10,-1])cylinder(9,rad,rad);
                       translate([48,10,-1])cylinder(9,rad,rad);
           }   

rotate([0,-shaftangle*0,0])
intersection()
 {
   import("boat_combineall.stl");
   translate([30,0,0])
      translate([0,-100,100-105])  // three lines taken from boat scad
         translate([150,0,0])            // (slices off a section of the hull)
             cube([155,200,100]);
 }

rotate([0,shaftangle,0])  // example motor hub and motor - just a cylinder of the right length
 {
translate([247,0,59])
rotate([0,90,0])
    difference()
     { 
          cylinder(hubnmotor,15,15);
         translate([0,0,-0.5])cylinder(hubnmotor+1,3,3);
     }
 }
 
  translate([220,0,0])
     rotate([0,shaftangle*0,0])   // needs *0 to unrotate, to make it flat for printing
   {
       translate([0,-10+30,0])cube([70,20,25]);  // base rectangle
       translate([0,-10-30,0])cube([70,20,25]);   // base rectangle
       
        translate([22,0,0])
         {
            translate([0,-20,18])
                difference()
                 {
                    // rectangle attached to motor
                    cube([5,40,37]);

                    translate([0,20,20.5])  // centered on shaft
                         union()// motor bolt holes  (16mm and 19mm diameter)
                          {
                              translate([-1,0,0])
                                   rotate([0,90,0])cylinder(10,2,2);  // center shaft
                              for(i=[-1,1])
                              {
                                  translate([-1,19/2*i,0])
                                       rotate([-1,90,0])cylinder(10,1.5,1.5);
                                  translate([-1,0,16/2*i])
                                       rotate([0,90,0])cylinder(10,1.5,1.5);
                              }
                     }
                 
             }
            hull()  // sloping wall, left
             {
                translate([0,-10-15,32])  // top
                    cube([5,5,23]);
                 translate([0+30,-10-15,32])  // bottom, towards rear
                   cube([5,5,5]);
                 translate([0-20,-10-15,32])  // bottom, towards front
                   cube([5,5,5]);
              }
           
             translate([-20,-20-20,32])  // wide base, left
                   difference()
                     {
                       cube([55,20,4]);
                         boltholes(1.5);
                     }
              
            hull()  // sloping wall, right
             {
                translate([0,20,32])  // top
                    cube([5,5,23]);
                 translate([0+30,20,32])  // bottom, towards rear
                   cube([5,5,5]);
                 translate([0-20,20,32])  // bottom, towards front
                   cube([5,5,5]);
              }
             translate([-20,20,32])  // wide base, right
                   difference()
                     {
                        cube([55,20,4]); 
                        boltholes(1.5);
                     }
              
              // these two are printed sep, with higher infil and glued to mouting points in
              // hull, to provide screwable base for the above motor mount
             translate([-20,-20-20,25])  // lower wide base, left
                  difference()
                      {
                        cube([55,20,7]);
                         translate([0,0,1.25])boltholes(1.25);
                      }
              
              translate([-20,20,25])  // lower wide base, right
                     difference()
                         {
                             cube([55,20,7]);            
                             translate([0,0,1.25])boltholes(1.25);
                         }
           }
     }