Summary

elements for a pico turbirne !

need

motor
a ball bearing ( roller for me)
some screw
a belt

does not work very well for me :
-my prints are bad
-a rubber band is not a good idea :
-use a colomn drill for the axes...

enjoy

Instructions

use openScad and touch the datalove :
comment or uncomment the part/module you need

Savonius_Diametre_Base=100;
Thinkness=4;

Roller_Diametre_Externe=22;
Roller_Diametre_Interne=8;
Roller_Hauteur=7;

Motor_Diametre_Central=13;
Motor_Diametre_Holder=3;
Motor_Espacement_Holder=25;

footer_height=50;

//Arm1();

//Arm2();

//savonius();

//poulie();

//footer();

full_animated();

module full_animated(){
Arm1();
color("red")translate([Savonius_Diametre_Base/2,0,Thinkness])rotate([0,0,90])Arm2();
translate([0,0,Thinkness+Roller_Hauteur-1])rotate([0,0,$t360])savonius();
translate([Savonius_Diametre_Base/2,0,Thinkness])rotate([0,0,90])translate([Savonius_Diametre_Base/2,0,-10epaisseur])dumymotor();
translate([Savonius_Diametre_Base/2,0,Thinkness])rotate([180,0,90])translate([Savonius_Diametre_Base/2,0,-5epaisseur])poulie();
color("green")translate([Savonius_Diametre_Base/4,0,-2Thinkness])footer();
}

module Arm1(){
difference(){
union(){
hull(){
cylinder(r=(Roller_Diametre_Externe/2)+Thinkness*2, h=Thinkness);
translate([Savonius_Diametre_Base/2,0,0])cylinder(r=Roller_Diametre_Externe/2, h=Thinkness);
}
translate([0,0,Thinkness])cylinder(r=(Roller_Diametre_Externe/2)+Thinkness, h=Roller_Hauteur-1);
}
cylinder(r=Roller_Diametre_Interne/2+1, h=Thinkness+Roller_Hauteur);
translate([0,0,Thinkness])cylinder(r=Roller_Diametre_Externe/2, h=Roller_Hauteur);
translate([Savonius_Diametre_Base/2,0,0])cylinder(r=Thinkness/2, h=Thinkness+1);
//4 holes for a base
translate([(Savonius_Diametre_Base/4)-Thinkness,Thinkness,0])cylinder(r=Thinkness/4, h=Thinkness+1);
translate([(Savonius_Diametre_Base/4)-Thinkness,-Thinkness,0])cylinder(r=Thinkness/4, h=Thinkness+1);
translate([(Savonius_Diametre_Base/4)+Thinkness,Thinkness,0])cylinder(r=Thinkness/4, h=Thinkness+1);
translate([(Savonius_Diametre_Base/4)+Thinkness,-Thinkness,0])cylinder(r=Thinkness/4, h=Thinkness+1);

}

module Arm2(){

difference(){      hull(){          cylinder(r=Roller_Diametre_Externe/2, h=Thinkness);          translate([Savonius_Diametre_Base/2,0,0])cylinder(r=(Motor_Espacement_Holder/2 +Motor_Diametre_Holder+Thinkness/2), h=Thinkness);      }  cylinder(r=Thinkness/2, h=Thinkness*3);  translate([Savonius_Diametre_Base/2,0,0])cylinder(r=Motor_Diametre_Central/2, h=Thinkness+1);  translate([Savonius_Diametre_Base/2,Motor_Espacement_Holder/2,0])cylinder(r=Motor_Diametre_Holder/2, h=Thinkness+1);  translate([Savonius_Diametre_Base/2,-Motor_Espacement_Holder/2,0])cylinder(r=Motor_Diametre_Holder/2, h=Thinkness+1);  }

}

//+----------------------------------------------------------+
//| OPENSCAD SAVONIUS ROTOR |
//| 2014 gaziel@gmail.com |
//|see http://fr.wikipedia.org/wiki/Rotor_de_Savonius |
//|or http://en.wikipedia.org/wiki/Savonius_wind_turbine |
//+----------------------------------------------------------+

Diametre_base=100; //base diameter (D)
ecart=16; //central Gap - ecart (e)
epaisseur=3; //thinkness ( base and max'wing)
gorge=3;
hauteur=100; //height
diametre_pale=(Diametre_base/2)+(ecart/2); //wing diameter

//try to get 0.166666666666666
echo("best : 0.15 < ", ecart/Diametre_base ,"< 0.17");

Twist=0; //Wings of Fury
n_pale=2; //number of wings -

$fa=1;
$fs=1;

module savonius(){
base();
rotor2();
}

module rotor2(){
for (i=[1:n_pale]){
color([0.5+sin(10i)/2,0,1/i]){
rotate([0,0,i(360/n_pale)]){
translate([-diametre_pale/2+ecart/2,0,epaisseur+gorge]){
linear_extrude(height=hauteur+epaisseur,convexity=100,twist=Twist){
difference(){
circle(r=diametre_pale/2);
circle(r=(diametre_pale/2)-epaisseur/2);
translate([-Diametre_base,0,0])square(Diametre_base*2);
}
}
}
}
}
}
}

module base(){
difference(){
color("CadetBlue"){
union(){
cylinder(r=Diametre_base/2, h=epaisseur);
translate([0,0,epaisseur])cylinder(r=(Diametre_base-epaisseur)/2, h=gorge);
translate([0,0,epaisseur+gorge])cylinder(r=Diametre_base/2, h=epaisseur);
}
}
translate([0,0,-epaisseur]) cylinder(r=1, h=3*10); //change r as your preference
}

}

module dumymotor(){
color("grey")cylinder(r=Motor_Espacement_Holder/2+epaisseur,h=10epaisseur);
color("black")cylinder(r=Motor_Diametre_Holder/2,h=13epaisseur);
}

module poulie(){
difference(){
color("Blue"){
union(){
cylinder(r=Motor_Diametre_Central/2, h=epaisseur);
translate([0,0,epaisseur])cylinder(r=(Motor_Diametre_Central-epaisseur)/2, h=gorge);
translate([0,0,epaisseur+gorge])cylinder(r=Motor_Diametre_Central/2, h=epaisseur);
cylinder(r=(Motor_Diametre_Central-epaisseur)/2, h=(gorge+epaisseur2)2);

            }          }          translate([0,0,-epaisseur]) cylinder(r=0.5, h=100); //change r=3 as your preference      }

}

module footer(){
difference(){
hull(){
cube(4Thinkness,center=true);
translate([-0,0,-(2Thinkness+footer_height)])cylinder(r=Savonius_Diametre_Base/6,h=Thinkness);
}
translate([-Thinkness,Thinkness,Thinkness])cylinder(r=Thinkness/4, h=Thinkness+1);
translate([-Thinkness,-Thinkness,Thinkness])cylinder(r=Thinkness/4, h=Thinkness+1);
translate([+Thinkness,Thinkness,Thinkness])cylinder(r=Thinkness/4, h=Thinkness+1);
translate([+Thinkness,-Thinkness,Thinkness])cylinder(r=Thinkness/4, h=Thinkness+1);
}
translate([-0,0,-(2*Thinkness+footer_height)])cylinder(r=Savonius_Diametre_Base/4,h=Thinkness);

}

Parametric Savonius Model