https://www.amaglider.com/, Great Sir Respect for you. To do this, we apply a knot lubricant. There are several things that may be done. The tips were raised 1 11/16 (1 1/2 + 3/16), putting them 11/16 above the center. (Later I figured out how to do this without making all the pencil marks. The added length brought no benefit so I decreased the loop size to 10 to save weight. This is the preferred way to wet form the wing. Align the inboard end of the form with the marks 5 from the tip and align the high point mark on the form with the high point mark on the wing. The outer wing panel was soaked in water to soften the wood, then it was strapped onto a curved form with an Ace bandage to shape the curve, and allowed to dry. Getting the Most From Your Guillows 25-1 Glider | endlessLift, How to Get the Most From Your Toy Airplane at TeamDroid, THE 27TH CHARLES HAMPSON GRANT MEMORIAL INTERNATIONAL MASS LAUNCH OF CLOUD TRAMPS, 2022, Make Your Own Snowflake A Rubber Band Powered Foam Plate Airplane. I soaked an entire wing and bound it to the airfoil form with the jar holding down the center and the tips raised up 1 1/2. Align the high point mark on the wingtip with the high point line on the form. This increases the roll stability and resists the roll to the left. The heavier airplane also comes down faster when the power runs out. That will require cutting the prop shaft and making a new one. They never flew very well. The blocks at the ends insure that both tips are held flat to the support blocks that are parallel with each other and the center. I had two flights of a little over 50 seconds. Pull the second knot up tight against the first knot. Or you can file it down. You can increase the dihedralandform the camber at the same time. We wont use the same holes for the new hook. It is unlikely to dive right. 
Put one end of the wing into the water. One way to measure the wing area is to trace the wing onto a thin sheet material of known, uniform density, cut out the pattern and weigh it. You can get steel wire at your hobby or craft shop, or order online. When the wood is completely dry, unwrap the Ace bandage. Be sure the opening is facing away from the prop hook. Sometimes you can push the knot closer to the end by pulling the rubber between your fingers. http://www.digitalbuddha.co. Putting the motor in a film can is a good way to do it. It takes less rudder or sidethrust to correct the torque roll. Put a tiny bit of light machine oil on the prop shaft and bearing. Although the curved edge of the fin is supposed to go into the slot (above), I put the straight edge into the slot and use the curved edge as a trim tab (below). It has a lower margin for stability and adjustments can be very sensitive. Check that everything is in the correct place before each flight. A piece of paper can be folded on one edge to make a right angle. This can be especially bad with an unlubed motor. Then I glued strips of 1/32 balsa sheet to the top surface, to increase lift the way the squirrel wing does, because I was too impatient to soak the wings and bend them. But you will need to know what you are doing. Instead, hook an index finger and little finger around the fuselage on either end of the slot and PULL the wing through the slot. A lubed motor does not develop as much torque at the same number of turns, so it produces less of a left roll. The motor has plenty of power to fly the plane, it does not need to be thrown hard. I slide the wing as far forward as possible and make a mark above the slot at the wing leading edge. We want to make simple flying models easier, better and more accessible to the world! Later I will show you how to make modifications that will greatly improve flights. Place the trailing edge of the rudder on top of a shim to space it up off the table by the amount you want the rudder to be deflected. The center was supported on a 3/4 x 1 1/2 x 3 block of wood to keep the inside ends of the forms off the table top. 2 of the Sky Streak Motorplane in one box. I bought the 3/16th Tan Super Sport Rubber to substitute for the same size blue OEM rubber motor. We can also make a rudder with flexible wire hinges. It gets camber and dihedral at the same time and does not need all the measuring and marking. That is why it is important to have pencil markings on the wings and fuselage slot. When you are ready to move beyond the Guillows gliders, there are many good resources on the Internet. You will need two 5 long form boards, two 2 long pieces of 2 Ace bandage, some tape, two 1 1/2 tall blocks and a jar of water about 4 11/16 in diameter. Also mark 3/32 on either side of the center. I am teaching Robotics and AeroModeling was looking upon some information on how to improve the flight performance. 5) Aft motor hook using a dress pin (w/ball end) with the hook suspended so that the rubber motors rarely rubs the fuselage. Tape the end of the Ace bandage to the back of the form, extending off the trailing edge. Denny Dart II 0.185grams per square inch. Continue counting in the same way, One, two, three, four, five, six, seven, eight, nine, TWO, one, two, three, four, five, six, seven, eight, nine, THREE, one, two, three, four, five, six, seven, eight, nine, FOUR, , one, two, three, four, five, six, seven, eight, nine,FIFTEEN. That is fifteen tens, or 150 turns. 
Your email address will not be published. 4) Sanded empennage to save weight and for easier trailing edge adjustments. The Causeway, Maldon, Fold the motor and put it in a storage can. 
I found it behind the white pickup truck in the tanbark along the fence. Softer wood would have allowed more curve in the wing. You can read about those elsewhere on this site. It takes considerable force to get the sheet parts into the slots and it deforms the wood. Flight tests showed that the motor should be a bit thinner, so I replaced it with a 15 loop of 3/32 strip. After you have seen it fly a few times, you will have a better idea how fast to release it. You can also wrap rubber bands around your fingers to get a better grip on the parts. 
A right-right flight pattern can be accomplished with a bit of right thrust for right turn in the climb and a bit of right rudder to maintain right turn in the glide. If a motor gets in dirt, wash and relube it before the next flight. Now you can add more turns to get longer, higher flights.
Work out any twist now. Now bend the straight piece out from the circle around a small radius. You can increase the dihedral.
Look at the wing from the end to see how the curve is coming along. (You can see the wing rib on the Cloud Tramp drawing under the jar.). Start by putting about 150 turns into the motor. Kids love airplanes that can take off from the ground, what we modelers call ROG Rise Off Ground. Line your eye up with thecenter lineof the wing and look straight across it, then look out along the wing to the tip and make sure it is not twisted. Competition flyers also make their motors longer than the distance between the hooks to get more turns in. Apply glue to keep the hook from sliding out of the wood. We want to leave the center 2 of the wing alone for now. I will first explain how to form camber in the wings with fingers. The problem with this is that the right roll will remain after the motor torque goes down. (Some day you will want to deliberately twist wings. Look at the plane from the front and from below. I found that bubble soap makes an excellent knot lube. Too much right thrust and you will have the opposite problem, the plane will dive to the right into the ground. A form board for this wing would be 2 x 5. Leave the end sharp, it will be pressed into the wood later. (I started with a 1/8 width because that is what comes with the kit. Every few minutes check the wood for flexibility. You can get both from your pharmacy. Put the blocks and the jar exactly the same distance from each end. Do not try to push the entire wing through the slot. With lube, I have put up to 400 turns into the kit motor without straining it. You can also use scissors on this thin, soft wire. The area of the wing pattern must be (4.496/33.2) 169.775 = 22.99 square inches. BTW, that last version competition version easily thermaled for a local park recreation manager and was lost going straight up. It is convenient to count turns by tens. I considered that to be enough. This weight is the same fraction of the total weight of the sheet as the wing pattern area is to the area of the whole sheet. The weights of the components for one Sky Streak kit are: To calculate wing loading we need the wing area. Slip an O-ring over the end and slide it down out of the way. These planes provide a catalyst that just naturally brings a smile to anyone that throws a toy glider into the open sky. The cambered wing will help lift the extra weight of the larger prop. It will settle down and land on the wheels, too. This article takes me way forward in my thinking Thankyou! The propeller unit slips over the end of the fuselage.
Other liquid soaps may be used, such as Johnsons Baby Shampoo. Make a right angle bend (backwards or forwards) 1/8 above the stick. Designed by Elegant Themes | Powered by WordPress. This adds a little weight up front. When dry, the tips sprung back to 1.3, increasing the dihedral from 6 degrees to 12 degrees. This requires a little more care and attention, but can produce equally good results. See them at the Guillows site here: If you buy them from Guillows online, consider getting a bag of extra motors and 6 props as well. Gary: Thanks for publishing all this. I have two profile scale airplanes, an F4U and Japanese Jill using the bto fly that use the basic Skystreak with added material to assume the scale outlines. Soak the whole wing in a cookie pan of water. We must counteract the left bank and left turn. Place the wing against the board, with the leading edge of the wing along the leading edge of the form, closest to the greatest curvature, and the tip of the wing at the tip of the form. Thank You sir I use the same buffer to polish the prop blades after shaving. It has a 12 wingspan and is 11 long. The wrong amount of right rudder can have the same effect as the wrong amount of right thrust; the plane will arc to the right into the ground, or it may zoom straight up into a stall. and massage the motor until it is completely coated. Lube is even more important if you want to put in many turns. Mixing in a little glycerin would help. Or set a little more right rudder to give the size of right circle you want in the glide and adjust the thrustline setting to give the same right circle in the climb. Itoccurredto me that most kids would not have easy access to preformed balsa airfoil forms or the ability to make their own forms. Once you have figured out the right place for the wing, you want to be able to get it back there again. Place a weight on the block to keep it flat. Place the tip ends of the form boards on the 1 1/2 blocks and place the jar of water on the center of the wing. This can cause breakage of the parts. Mark the position of the high points at each tip. The classic motor lube is a mix of equal parts glycerin and green soap. You dont know where the second circle is going to come out. There will be even more and bigger knots on the longer motor. The wing must be moved all the way forward. But before we do that, we should make a new motor hook. A bright light shining on the underside of the wing will help you judge the match. It surprised me by going off to the right in a large circle, getting lost in the trees. It is best to not do this together with the 6 prop. Near the trailing edge, it is almost straight. A dry motor will not take as many turns as a lubed motor and it will abrade itself. A larger propelleracceleratesa larger volume of air by a lesser amount and is more efficient. We need to put pencil marks on the wing to align the wing with the form. The wing may not be exactly 12 long, so measure carefully and mark the exact center. I decided to put it back in, and a little extra. The airfoil curve will not be uniform, but this is the best we can do with this type of wing construction. You will need to scavenge a D6 propeller assembly or remove your D5 propeller from its hanger and replace it with a D6. You can moisten the wood and finger form camber into the fin to pull to the left, turning the nose to the right. First put marks along one edge of the wing 5 in from each tip. Mark the position of the high point of the camber near each end. These sets are widely available in toy, hobby and variety stores. Put the rudder and fin back together, mark 1/4 and 3/4 along the rudder separation line. Straighten it and remove it entirely from the wood. I did that after the wing had completely dried out. We will be modifying the wings to a quasi-polyhedral (tip dihedral) and upgrading to Tan II Sport for outdoor flying. Dont get water on the central 2 of the wing. Soak the whole wing in water until it becomes soft and flexible. I have got 400 turns on a lubricated motor, but some do not seem to be able to take more than about 300. After the wing has completely dried, lift the jar of water off the wing. The rudder can be offset by about half the thickness of the wood sheet. Refer to any model plan showing a wing rib. The water soak did not fill in the holes in the wood. Check the camber. You will find that different combinations of side thrust and rudder can accomplish similar or different flight patterns. 1) Shaved and balanced prop with pitch increase of 2 degrees (less mass, longer prop rotation/ duration using 1/8 rubber) Put atablespoonfulor a capful of lube in aZiplocbag. We want the high point 40% back from the leading edge on a 2 wing, so that is 0.8 or approximately 13/16.
Mark where the fin comes out of the fuselage. Hold one tip of the prop straight below the nose with one hand and hold the stick right behind the wing with the other. I decided to try bubble soap because it is likely available in many of the places where you would find Guillows toy planes.
Put one end of the wing into the water. One way to measure the wing area is to trace the wing onto a thin sheet material of known, uniform density, cut out the pattern and weigh it. You can get steel wire at your hobby or craft shop, or order online. When the wood is completely dry, unwrap the Ace bandage. Be sure the opening is facing away from the prop hook. Sometimes you can push the knot closer to the end by pulling the rubber between your fingers. http://www.digitalbuddha.co. Putting the motor in a film can is a good way to do it. It takes less rudder or sidethrust to correct the torque roll. Put a tiny bit of light machine oil on the prop shaft and bearing. Although the curved edge of the fin is supposed to go into the slot (above), I put the straight edge into the slot and use the curved edge as a trim tab (below). It has a lower margin for stability and adjustments can be very sensitive. Check that everything is in the correct place before each flight. A piece of paper can be folded on one edge to make a right angle. This can be especially bad with an unlubed motor. Then I glued strips of 1/32 balsa sheet to the top surface, to increase lift the way the squirrel wing does, because I was too impatient to soak the wings and bend them. But you will need to know what you are doing. Instead, hook an index finger and little finger around the fuselage on either end of the slot and PULL the wing through the slot. A lubed motor does not develop as much torque at the same number of turns, so it produces less of a left roll. The motor has plenty of power to fly the plane, it does not need to be thrown hard. I slide the wing as far forward as possible and make a mark above the slot at the wing leading edge. We want to make simple flying models easier, better and more accessible to the world! Later I will show you how to make modifications that will greatly improve flights. Place the trailing edge of the rudder on top of a shim to space it up off the table by the amount you want the rudder to be deflected. The center was supported on a 3/4 x 1 1/2 x 3 block of wood to keep the inside ends of the forms off the table top. 2 of the Sky Streak Motorplane in one box. I bought the 3/16th Tan Super Sport Rubber to substitute for the same size blue OEM rubber motor. We can also make a rudder with flexible wire hinges. It gets camber and dihedral at the same time and does not need all the measuring and marking. That is why it is important to have pencil markings on the wings and fuselage slot. When you are ready to move beyond the Guillows gliders, there are many good resources on the Internet. You will need two 5 long form boards, two 2 long pieces of 2 Ace bandage, some tape, two 1 1/2 tall blocks and a jar of water about 4 11/16 in diameter. Also mark 3/32 on either side of the center. I am teaching Robotics and AeroModeling was looking upon some information on how to improve the flight performance. 5) Aft motor hook using a dress pin (w/ball end) with the hook suspended so that the rubber motors rarely rubs the fuselage. Tape the end of the Ace bandage to the back of the form, extending off the trailing edge. Denny Dart II 0.185grams per square inch. Continue counting in the same way, One, two, three, four, five, six, seven, eight, nine, TWO, one, two, three, four, five, six, seven, eight, nine, THREE, one, two, three, four, five, six, seven, eight, nine, FOUR, , one, two, three, four, five, six, seven, eight, nine,FIFTEEN. That is fifteen tens, or 150 turns. Your email address will not be published. 4) Sanded empennage to save weight and for easier trailing edge adjustments. The Causeway, Maldon, Fold the motor and put it in a storage can. I found it behind the white pickup truck in the tanbark along the fence. Softer wood would have allowed more curve in the wing. You can read about those elsewhere on this site. It takes considerable force to get the sheet parts into the slots and it deforms the wood. Flight tests showed that the motor should be a bit thinner, so I replaced it with a 15 loop of 3/32 strip. After you have seen it fly a few times, you will have a better idea how fast to release it. You can also wrap rubber bands around your fingers to get a better grip on the parts. A right-right flight pattern can be accomplished with a bit of right thrust for right turn in the climb and a bit of right rudder to maintain right turn in the glide. If a motor gets in dirt, wash and relube it before the next flight. Now you can add more turns to get longer, higher flights. Work out any twist now. Now bend the straight piece out from the circle around a small radius. You can increase the dihedral.
Look at the wing from the end to see how the curve is coming along. (You can see the wing rib on the Cloud Tramp drawing under the jar.). Start by putting about 150 turns into the motor. Kids love airplanes that can take off from the ground, what we modelers call ROG Rise Off Ground. Line your eye up with thecenter lineof the wing and look straight across it, then look out along the wing to the tip and make sure it is not twisted. Competition flyers also make their motors longer than the distance between the hooks to get more turns in. Apply glue to keep the hook from sliding out of the wood. We want to leave the center 2 of the wing alone for now. I will first explain how to form camber in the wings with fingers. The problem with this is that the right roll will remain after the motor torque goes down. (Some day you will want to deliberately twist wings. Look at the plane from the front and from below. I found that bubble soap makes an excellent knot lube. Too much right thrust and you will have the opposite problem, the plane will dive to the right into the ground. A form board for this wing would be 2 x 5. Leave the end sharp, it will be pressed into the wood later. (I started with a 1/8 width because that is what comes with the kit. Every few minutes check the wood for flexibility. You can get both from your pharmacy. Put the blocks and the jar exactly the same distance from each end. Do not try to push the entire wing through the slot. With lube, I have put up to 400 turns into the kit motor without straining it. You can also use scissors on this thin, soft wire. The area of the wing pattern must be (4.496/33.2) 169.775 = 22.99 square inches. BTW, that last version competition version easily thermaled for a local park recreation manager and was lost going straight up. It is convenient to count turns by tens. I considered that to be enough. This weight is the same fraction of the total weight of the sheet as the wing pattern area is to the area of the whole sheet. The weights of the components for one Sky Streak kit are: To calculate wing loading we need the wing area. Slip an O-ring over the end and slide it down out of the way. These planes provide a catalyst that just naturally brings a smile to anyone that throws a toy glider into the open sky. The cambered wing will help lift the extra weight of the larger prop. It will settle down and land on the wheels, too. This article takes me way forward in my thinking Thankyou! The propeller unit slips over the end of the fuselage.
Other liquid soaps may be used, such as Johnsons Baby Shampoo. Make a right angle bend (backwards or forwards) 1/8 above the stick. Designed by Elegant Themes | Powered by WordPress. This adds a little weight up front. When dry, the tips sprung back to 1.3, increasing the dihedral from 6 degrees to 12 degrees. This requires a little more care and attention, but can produce equally good results. See them at the Guillows site here: If you buy them from Guillows online, consider getting a bag of extra motors and 6 props as well. Gary: Thanks for publishing all this. I have two profile scale airplanes, an F4U and Japanese Jill using the bto fly that use the basic Skystreak with added material to assume the scale outlines. Soak the whole wing in a cookie pan of water. We must counteract the left bank and left turn. Place the wing against the board, with the leading edge of the wing along the leading edge of the form, closest to the greatest curvature, and the tip of the wing at the tip of the form. Thank You sir I use the same buffer to polish the prop blades after shaving. It has a 12 wingspan and is 11 long. The wrong amount of right rudder can have the same effect as the wrong amount of right thrust; the plane will arc to the right into the ground, or it may zoom straight up into a stall. and massage the motor until it is completely coated. Lube is even more important if you want to put in many turns. Mixing in a little glycerin would help. Or set a little more right rudder to give the size of right circle you want in the glide and adjust the thrustline setting to give the same right circle in the climb. Itoccurredto me that most kids would not have easy access to preformed balsa airfoil forms or the ability to make their own forms. Once you have figured out the right place for the wing, you want to be able to get it back there again. Place a weight on the block to keep it flat. Place the tip ends of the form boards on the 1 1/2 blocks and place the jar of water on the center of the wing. This can cause breakage of the parts. Mark the position of the high points at each tip. The classic motor lube is a mix of equal parts glycerin and green soap. You dont know where the second circle is going to come out. There will be even more and bigger knots on the longer motor. The wing must be moved all the way forward. But before we do that, we should make a new motor hook. A bright light shining on the underside of the wing will help you judge the match. It surprised me by going off to the right in a large circle, getting lost in the trees. It is best to not do this together with the 6 prop. Near the trailing edge, it is almost straight. A dry motor will not take as many turns as a lubed motor and it will abrade itself. A larger propelleracceleratesa larger volume of air by a lesser amount and is more efficient. We need to put pencil marks on the wing to align the wing with the form. The wing may not be exactly 12 long, so measure carefully and mark the exact center. I decided to put it back in, and a little extra. The airfoil curve will not be uniform, but this is the best we can do with this type of wing construction. You will need to scavenge a D6 propeller assembly or remove your D5 propeller from its hanger and replace it with a D6. You can moisten the wood and finger form camber into the fin to pull to the left, turning the nose to the right. First put marks along one edge of the wing 5 in from each tip. Mark the position of the high point of the camber near each end. These sets are widely available in toy, hobby and variety stores. Put the rudder and fin back together, mark 1/4 and 3/4 along the rudder separation line. Straighten it and remove it entirely from the wood. I did that after the wing had completely dried out. We will be modifying the wings to a quasi-polyhedral (tip dihedral) and upgrading to Tan II Sport for outdoor flying. Dont get water on the central 2 of the wing. Soak the whole wing in water until it becomes soft and flexible. I have got 400 turns on a lubricated motor, but some do not seem to be able to take more than about 300. After the wing has completely dried, lift the jar of water off the wing. The rudder can be offset by about half the thickness of the wood sheet. Refer to any model plan showing a wing rib. The water soak did not fill in the holes in the wood. Check the camber. You will find that different combinations of side thrust and rudder can accomplish similar or different flight patterns. 1) Shaved and balanced prop with pitch increase of 2 degrees (less mass, longer prop rotation/ duration using 1/8 rubber) Put atablespoonfulor a capful of lube in aZiplocbag. We want the high point 40% back from the leading edge on a 2 wing, so that is 0.8 or approximately 13/16.
Mark where the fin comes out of the fuselage. Hold one tip of the prop straight below the nose with one hand and hold the stick right behind the wing with the other. I decided to try bubble soap because it is likely available in many of the places where you would find Guillows toy planes.