// -*- C -*-

pump_dia = 27;
seatstay_mindia = 14;
seatstay_maxdia = 19;
pump_seatstay_gap = 12.3;

module Holes(){
  translate([-(pump_seatstay_gap/2 + pump_dia/2), 0]) circle(r=pump_dia/2);
  translate([+(pump_seatstay_gap/2 + seatstay_mindia/2), 0]) {
    hull(){
      for (ud=[-1,1])
	translate([0, ud * (seatstay_maxdia-seatstay_mindia)/4])
	  circle(r=seatstay_mindia/2);
    }
  }
}

Holes();