Seams like Taping With Fiberglass

Its a beautiful hull.  Once we finished the tabbing, we were able to remove the stitches (that was the painful part, by the way), and fill in the gaps with epoxy.  After that it was a sanding game - the word for this is "fairing the hull."  Making it beautiful.  Making the lines fair so that the boat will move easily through the water.

The seam taping involves some 4-in strips of fiberglass tape.  To tape the seam, you first need to round it (sanding) and smooth it, then lay the tape carefully and soak it with epoxy to cement it to the wood.  Below is a picture of the transom, all taped up.

Heres Jay (thats my Dad), finishing up the taping of the starboard joint.

Where to next?  We have to apply more peanut butter (less thick, more Jif and less Adams) to smooth out the junction between the fiberglass tape and the rest of the hull.  Then we can sheathe the hull completely in fiberglass.

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Wood and fiberglass hull like yellow boat

Based on yellow boat plans different deck 390 Grams as shown 
Also Ply fiberglass epoxy catamaran build log

Yellow boat 3 http://kiwitricopter.blogspot.co.nz/2012/12/yellow-boat-3-power-test-scratch-built.html

Fit out http://kiwitricopter.blogspot.co.nz/2013/12/mad-man-yellow-boat-2-x-turnigy-heli.html

Sea run a Purau http://kiwitricopter.blogspot.co.nz/2014/01/yellow-boat-4-fpv-camera-view-purau-new.html

Another run at Motunau http://kiwitricopter.blogspot.co.nz/2014/01/yellow-boat-4-motunau.html

Evo 2 http://kiwitricopter.blogspot.co.nz/2014/01/yellow-boat-4-revised-powertrain.html

Glass and epoxy inside balsa ply, will epoxy the outside too. Its very strong with builders fiberglass tape and epoxy 

The motors will be mounted further forward on a cooled plate 

Spray rails are bamboo barbecue skewers and wood filler  

Will be powered with 2 of the following

P2632 Brushless Outrunner 3800kv

The Arduino code will be the same as I ran in the Catamaran I may add differential thrust with steering angle as its a twin

#include  

int ch1 = 4;

int ch2 = 5;

unsigned long ch1v;

unsigned long ch2v;

unsigned long RightLeft = 0;

unsigned long UpDown = 0;

long Trim = 0;

long Throttle = 0;

long Cooling = 0;

long PumpSpeed = 0;

Servo Servo1;

Servo Servo2;

Servo Servo3;

Servo Servo4;

#define MAX_CHAN 8

int AnIn[MAX_CHAN] = {0, };

unsigned long PPMtout = 20000;

char buf[300] = {0, };

long mS = 0;

 void setup() {

   

  

  Serial.begin(115200);

  

  pinMode(ch1, INPUT);

  pinMode(ch2, INPUT);

  

  Servo1.attach(8);

  Servo2.attach(9);

  Servo3.attach(10);

  Servo4.attach(11);

  

}

void loop() {

  

  AnIn[0] = analogRead(A0);

  AnIn[1] = analogRead(A1);

  AnIn[2] = analogRead(A2);

  AnIn[3] = analogRead(A3);

  AnIn[4] = analogRead(A4);

  AnIn[5] = analogRead(A5);

  AnIn[6] = analogRead(A6);

  AnIn[7] = analogRead(A7);

  

  /* RAZU-2 Six turn

  This device has a gain of 55mV per amp giving a 36 Amp working range, 

  and a resolution of 11.3777 mA per bit with the maximum output at 5 volts 

  which is 1024 bits in the Arduino. By the way I should point out that 

  these devices on a 5 volt rail will sit around 2.5 volts with no current 

  flowing, so at a 2 Volt delta the out put should be around 4.5 V

   */

   

  mS = micros();

  

  //Get PPM from each RX channel  

  noInterrupts();

    

    

    

    

    

  ch1v = pulseIn(ch1, HIGH, PPMtout);//Throttle

  

  if(ch1v > 0)

  {

    ch2v = pulseIn(ch2, HIGH, PPMtout);//Imax

  } 

  else//Fail safe

  {

    ch1v = 1000;

    ch2v = 1000;    

  }

    

  interrupts();

  

  //ALLOW INTERRUPTS BEFORE UPDATE SERVOS

  delayMicroseconds(2000);

  

  

  //Calculate motor amps

  long Motor_mA = ((long)(AnIn[1] - 512) * 11.0f);

  

  

  

  int Tmax = (int)ch2v;

  

  //Set max throttle

  Throttle = (long)map((int)ch1v, 1000, 2000, 1400, Tmax); 

    

    

  //Calc amps

  long Amps = (long)map((int)Motor_mA, 0, 36000, 0, 36); 

    

    

    

  //Calculate cooling temp RTC on AnIn[0]

  int cerr = ((int)600 - (int)AnIn[0]); 

    

  //Integrate temparature

  Cooling += cerr;

   

  if(Cooling < 1000) Cooling = 1000;

  else if(Cooling > 2000) Cooling = 2000;

    

  //Use the temperature integrator plus the motor current 

  //36 Amps gives us 360 bits

  PumpSpeed = (long)Cooling + (Amps * 10);

  

  

  

  

  

  

  

  //Update the outputs

   

  Servo1.writeMicroseconds((int)Throttle);

     

  Servo2.writeMicroseconds((int)PumpSpeed);

  

  

  

  long Cyc_mS = (micros() - mS);

  

  //ALLOW SERVOS TO UPDATE BEFORE INTERRUPTS OFF

  delayMicroseconds(18000 - Cyc_mS); 

  

  Cyc_mS = (micros() - mS);

  

  sprintf(buf, "ch1v_Tmax:%d,ch2v_Imax:%d,Throttle:%d,AnIn[0]:%d,AnIn[1]:%d,CoolingError:%d,Cooling:%d,Imax:%d,MotorAmps:%d,Cyc_mS:%d", (int)ch1v, (int)ch2v, (int)Throttle, AnIn[0], AnIn[1], cerr, (int)Cooling, (int)Tmax, (int)Amps, (int)Cyc_mS );

    

  Serial.println(buf);

  

  

  /*

  char incomingByte = 0;

  

   // send data only when you receive data:

  while (Serial3.available() > 0) {

    // read the incoming byte:

    incomingByte = Serial3.read();

    

    Serial.print((char)incomingByte);

    

    delayMicroseconds(1000);

    

    if(incomingByte == 13) break;

  }

  

  Serial.println( );

  */

    

}

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