Arduino Multi AR600 Master *hangs*

#include <Wire.h>
int rx1 = 0;  //throttle
int rx2 = 0;  //aileron
int rx3 = 0;  //elevation
int rx4 = 0;  //rudder
int rx5 = 0;  //AUX
int rx6 = 0;  //Trainer
int rx1b = 0;  //throttle
int rx2b = 0;  //aileron
int rx3b = 0;  //elevation
int rx4b = 0;  //rudder
int rx5b = 0;  //AUX
int rx6b = 0;  //Trainer
char bx1 = 0;
char bx2 = 0;
char bx3 = 0;
char bx4 = 0;
char bx5 = 0;
char bx6 = 0;
char bx1b = 0;
char bx2b = 0;
char bx3b = 0;
char bx4b = 0;
char bx5b = 0;
char bx6b = 0;


void setup()
{
  Serial.begin(115200);      //Open the serial port at 115200bps
  Wire.begin();              //Join I2C bus (no address for master)
}


void loop()
{
  rx1 = pulseIn(7,HIGH,20000);
// rx1 = constrain (rx1, 1300, 1875);
// rx1 = map(rx1, 1300, 1875, 1, 100);
 bx1 = char(rx1);
  rx2 = pulseIn(6,HIGH,20000);
// rx2 = constrain (rx2, 1001, 2000);
 //rx2 = map(rx2, 1100, 1890, 1, 100);
 bx2 = char(rx2);
  rx3 = pulseIn(5,HIGH,20000);
// rx3 = constrain (rx3, 1001, 2000);
// rx3 = map(rx3, 1100, 1890, 1, 100);
 bx3 = char(rx3);
  rx4 = pulseIn(4,HIGH,20000);
// rx4 = constrain (rx4, 1001, 2000);
// rx4 = map(rx4, 1100, 1890, 1, 100);
 bx4 = char(rx4);
  rx5 = pulseIn(3,HIGH,20000);
// rx5 = constrain (rx5, 1001, 2000);
// rx5 = map(rx5, 1100, 1890, 1, 100);
 bx5 = char(rx5);
  rx6 = pulseIn(2,HIGH,20000);
// rx6 = constrain (rx6, 1001, 2000);
// rx6 = map(rx6, 1100, 1890, 1, 100);
 bx6 = char(rx6);

   rx1b = pulseIn(A0,HIGH,20000);
// rx1b = constrain (rx1b, 1300, 1875);
// rx1b = map(rx1b, 1300, 1875, 1, 100);
 bx1b = char(rx1b);
  rx2b = pulseIn(A1,HIGH,20000);
// rx2b = constrain (rx2b, 1001, 2000);
// rx2b = map(rx2b, 1100, 1890, 1, 100);
 bx2b = char(rx2b);
  rx3b = pulseIn(A2,HIGH,20000);
// rx3b = constrain (rx3b, 1001, 2000);
// rx3b = map(rx3b, 1100, 1890, 1, 100);
 bx3b = char(rx3b);
  rx4b = pulseIn(A3,HIGH,20000);
// rx4b = constrain (rx4b, 1001, 2000);
// rx4b = map(rx4b, 1100, 1890, 1, 100);
 bx4b = char(rx4b);
  rx5b = pulseIn(12,HIGH,20000);
// rx5b = constrain (rx5b, 1001, 2000);
// rx5b = map(rx5b, 1100, 1890, 1, 100);
 bx5b = char(rx5b);
  rx6b = pulseIn(8,HIGH,20000);
// rx6b = constrain (rx6b, 1001, 2000);
// rx6b = map(rx6b, 1100, 1890, 1, 100);
 bx6b = char(rx6b);
    Serial.print(rx1);
    Serial.print("\t");
    Serial.print(rx2);
    Serial.print("\t");
    Serial.print(rx3);
    Serial.print("\t");
    Serial.print(rx4);
    Serial.print("\t");
    Serial.print(rx5);
    Serial.print("\t");
    Serial.print(rx6);
    Serial.println("\t");

    Serial.print(rx1b);
    Serial.print("\t");
    Serial.print(rx2b);
    Serial.print("\t");
    Serial.print(rx3b);
    Serial.print("\t");
    Serial.print(rx4b);
    Serial.print("\t");
    Serial.print(rx5b);
    Serial.print("\t");
    Serial.print(rx6b);
    Serial.println("\t");
        Serial.println("\t");


 {
    expansionWrite(bx1, bx2, bx3, bx4, bx5, bx6, bx1b, bx2b, bx3b, bx4b, bx5b, bx6b);  //Whenever you want to write to the
}}

void expansionWrite(int value1, int value2, int value3, int value4, int value5, int value6, int value7, int value8, int value9, int value10, int value11, int value12)
{
  //pin = pin-100;             substracts 100 to it maps to the real ports on the expansion arduino
  Wire.beginTransmission(2); //Transmit to device #2
//  Wire.write(pin);            //Sends one byte stating the pin to be addressed
  Wire.write((int)value1);
  Wire.write((int)value2);
  Wire.write((int)value3);
  Wire.write((int)value4);
  Wire.write((int)value5);
  Wire.write((int)value6);
  Wire.write((int)value7);
  Wire.write((int)value8);
  Wire.write((int)value9);
  Wire.write((int)value10);
  Wire.write((int)value11);
  Wire.write((int)value12);  //Sends the value to be transmitted to the pin selected
  Wire.endTransmission();    //Stop transmitting
}