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60"Geronimo and 48" Crazy Horse
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We are the manufacturer and can fill all orders but we have a limited amount of balsa but have more on order. Most orders should be in the mail within a week. Don't forget Our buy 5 get a 6th for free offer which can save your club 20%.
Our 48" Crazy Horse and 60" Geronimo are high performance EPP gliders that fly well in a wide range of wind conditions. Most flyers will want to build for lighter winds for daily flight on the slopes, but the original request was to design tough EPP flying wings for dynamic soaring. These designs meet both goals. Their tapered wings penetrate the wind well but at the same time the square wing tips make them stable at slower speeds for beginner to intermediate flyers. EPP planes are very durable and forgiving. They can take a lot of abuse. Our planes are simple and strong built with knowledge we have gained from 35 years of building and crashing EPP combat planes.
Pay particular attention to the flying stability and tracking in the flight videos below. They show tight turns and dives in light to moderate wind. These designs excel in predictable control and solid flight performance. They don't have the low speed tip stall tendancy I have seen in some of the other slope wings I have flown. As their speed increases it feels like they shift gears and accellerate to a higher level of performance. Both wings shown have 10 ounces per foot wing loading but have been tested at almost 20 ounces per foot. Even with light wingloading they have flown amazingly well in 40+ mph winds.
We have a world class slope 20 minutes from where I live where I have flown since the 1980s. We also have a local mountain where they are flying DS planes less than an hour from where I live. Ted flys with me on the slope but also travels to fly at high speed DS events. He asked me if we could design 48" and 60" EPP gliders capable of DS. Ted had some ideas on what these planes should look like, so if you like the way these planes look and fly you can thank Ted. For the record, I build light and Ted likes to build heavy.
Here is what Ted writes after building and flying the Crashtesthobby designs: "After discussing this project for several years we finally got into our testing prototypes. These new production planes take a lot of time and research. We are about one year in testing different models. Builds vary greatly but I feel Lee has nailed a great selection and has been able to incorporate several airframe choices.... I have flown slope for about 20 years and feel these are better than anything out there. Hopefully the smaller kits will be around $100 and the 60” might be around $120. I am guessing but and hopefully an achievable goal. Lee and James will have to make that call once supply chains and kit assembly costs are established. I am going to fly the rails off mine. Ted"
The first time I launched one of Ted's heavy DS planes I was sure it would go to the bottom of the mountian, but it didn't. It flew surprisingly well and surprisingly fast. The Crazy Horse build shown in the videos is at 24 ounces ready to fly. Ted has a Crazy Horse ballasted up to 48 ounces and it still flys well in 20 mph winds on the slope. The magic comes with a heavy build when the wind is 30-50+ mph and you can let her loose and tear holes in the sky. If you are building heavy for record speeds, we recommend you add additional spars and tape and put ballast out along the wings to decrease the forces in the center of the wing in high "G" maneuvers. You need to build for the way you want to fly.
These wings have a unique but simple spar system. The straight leading edge wing design with a square wingtip create stability and make the straight spars possible without any wing joiners which is a potential fail point in high G maneuvers. The fiberglass spars have a top and bottom I-beam style construction making the wing stiff for its weight. We prefer low temperature hot glue for almost all construction because it is simple, clean, fast and flexible and bonds well to EPP foam. Hot glue is not brittle on spars like epoxy and Gorilla Glue and bonds in seconds.
The kits come with balsa elevons at customer request. The videos show EPP elevon construction but we are now are using balsa elevons. Put one layer of clear laminate on the balsa elevon then use the same process shown in the video for EPP elevon installation. The fuselage has a symmetrical bullet shape for penitration but still has room for battery and radio and ballast. The fuselage is big enough you can round it if you want.
The Crazy Horse and Geronimo kits come with 1 plane in the box including EPP wing, EPP fuselage, balsa elevons, 6 fiberglass spars, horns and pushrods, Coroplast rudder, laminate and hardware. You read correctly, The kit includes UV shielded clear laminate that doesn't need a spray adhesive!!!
Our laminate has a unique adhesive that is activated with a clothing or hobby iron at 180-220 F and will stick to the EPP foam. Most bidirectional reinforced tape will stick to the EPP foam without a spray adhesive. Ultra coat and 2" packing tape requre a spray adhesive to get them to stick to EPP foam and can add 6 oz or more to the flying weight of a plane.
You will need a radio and receiver of your choice, a 3--5 amp BEC, higher torque servos for higher speeds and a 1000 mah 2S-3S battery for power and weight in the nose. Some flyers are using 4 AA or 4 AAA batteries in the nose without a BEC. I like a battery I can change out at the field so I don't ever get the the slope with a dead battery and can't fly. A lipo battery allows you to fly for hours at the slope on a single charge.
You will need a low temp hot glue gun, 2" bidirectional reinforced tape, a laminating iron and a soldering iron with an adjustible tip to cut spar slots. You will also need some lead or tire weights to balance the plane. We use colored packing tape for color over the clear laminate. All of these things are shown in the build videos below.
It took me about 10 hours to build and laminate the kit and install the radio and get it ready to fly.
Please log in and join the discussion on RCGroups.
Included in the kit:
Our 48" Crazy Horse and 60" Geronimo are high performance EPP gliders that fly well in a wide range of wind conditions. Most flyers will want to build for lighter winds for daily flight on the slopes, but the original request was to design tough EPP flying wings for dynamic soaring. These designs meet both goals. Their tapered wings penetrate the wind well but at the same time the square wing tips make them stable at slower speeds for beginner to intermediate flyers. EPP planes are very durable and forgiving. They can take a lot of abuse. Our planes are simple and strong built with knowledge we have gained from 35 years of building and crashing EPP combat planes.
Pay particular attention to the flying stability and tracking in the flight videos below. They show tight turns and dives in light to moderate wind. These designs excel in predictable control and solid flight performance. They don't have the low speed tip stall tendancy I have seen in some of the other slope wings I have flown. As their speed increases it feels like they shift gears and accellerate to a higher level of performance. Both wings shown have 10 ounces per foot wing loading but have been tested at almost 20 ounces per foot. Even with light wingloading they have flown amazingly well in 40+ mph winds.
We have a world class slope 20 minutes from where I live where I have flown since the 1980s. We also have a local mountain where they are flying DS planes less than an hour from where I live. Ted flys with me on the slope but also travels to fly at high speed DS events. He asked me if we could design 48" and 60" EPP gliders capable of DS. Ted had some ideas on what these planes should look like, so if you like the way these planes look and fly you can thank Ted. For the record, I build light and Ted likes to build heavy.
Here is what Ted writes after building and flying the Crashtesthobby designs: "After discussing this project for several years we finally got into our testing prototypes. These new production planes take a lot of time and research. We are about one year in testing different models. Builds vary greatly but I feel Lee has nailed a great selection and has been able to incorporate several airframe choices.... I have flown slope for about 20 years and feel these are better than anything out there. Hopefully the smaller kits will be around $100 and the 60” might be around $120. I am guessing but and hopefully an achievable goal. Lee and James will have to make that call once supply chains and kit assembly costs are established. I am going to fly the rails off mine. Ted"
The first time I launched one of Ted's heavy DS planes I was sure it would go to the bottom of the mountian, but it didn't. It flew surprisingly well and surprisingly fast. The Crazy Horse build shown in the videos is at 24 ounces ready to fly. Ted has a Crazy Horse ballasted up to 48 ounces and it still flys well in 20 mph winds on the slope. The magic comes with a heavy build when the wind is 30-50+ mph and you can let her loose and tear holes in the sky. If you are building heavy for record speeds, we recommend you add additional spars and tape and put ballast out along the wings to decrease the forces in the center of the wing in high "G" maneuvers. You need to build for the way you want to fly.
These wings have a unique but simple spar system. The straight leading edge wing design with a square wingtip create stability and make the straight spars possible without any wing joiners which is a potential fail point in high G maneuvers. The fiberglass spars have a top and bottom I-beam style construction making the wing stiff for its weight. We prefer low temperature hot glue for almost all construction because it is simple, clean, fast and flexible and bonds well to EPP foam. Hot glue is not brittle on spars like epoxy and Gorilla Glue and bonds in seconds.
The kits come with balsa elevons at customer request. The videos show EPP elevon construction but we are now are using balsa elevons. Put one layer of clear laminate on the balsa elevon then use the same process shown in the video for EPP elevon installation. The fuselage has a symmetrical bullet shape for penitration but still has room for battery and radio and ballast. The fuselage is big enough you can round it if you want.
The Crazy Horse and Geronimo kits come with 1 plane in the box including EPP wing, EPP fuselage, balsa elevons, 6 fiberglass spars, horns and pushrods, Coroplast rudder, laminate and hardware. You read correctly, The kit includes UV shielded clear laminate that doesn't need a spray adhesive!!!
Our laminate has a unique adhesive that is activated with a clothing or hobby iron at 180-220 F and will stick to the EPP foam. Most bidirectional reinforced tape will stick to the EPP foam without a spray adhesive. Ultra coat and 2" packing tape requre a spray adhesive to get them to stick to EPP foam and can add 6 oz or more to the flying weight of a plane.
You will need a radio and receiver of your choice, a 3--5 amp BEC, higher torque servos for higher speeds and a 1000 mah 2S-3S battery for power and weight in the nose. Some flyers are using 4 AA or 4 AAA batteries in the nose without a BEC. I like a battery I can change out at the field so I don't ever get the the slope with a dead battery and can't fly. A lipo battery allows you to fly for hours at the slope on a single charge.
You will need a low temp hot glue gun, 2" bidirectional reinforced tape, a laminating iron and a soldering iron with an adjustible tip to cut spar slots. You will also need some lead or tire weights to balance the plane. We use colored packing tape for color over the clear laminate. All of these things are shown in the build videos below.
It took me about 10 hours to build and laminate the kit and install the radio and get it ready to fly.
Please log in and join the discussion on RCGroups.
Included in the kit:
- 1 EPP foam cores
- 2 x balsa elevons
- 1 white coroplast fin
- 6 x fiberglass spars
- 2 x elevon horns
- 2 x EZ connectors
- 2 x push rods
- 3 mil laminate is included!!!!
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Geronimo Build with the same techniques used on the Crazy Horse
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Discussing the same build techniques as above but with more focus on elevons, radio and fuselage
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More flight videos of specific models.
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