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  • 6 days ago
THE WORLD’S only wooden supercar, known as the "Splinter”, is a high-performance sports car that is estimated to be 90% wood. Fuelled by a lifelong desire to design and build his own car and inspired by a WWII airplane called the de Havilland Mosquito, designer and builder, Joe Harmon, from Mooresville, North Carolina, spent roughly nine years working on the Splinter with the help of his team. The Splinter began as a graduate school project at North Carolina State University and has continued since. Joe told R.Rides: “I’ve wanted to design and build my own car for my whole life. And we thought building it out of material like wood would present an interesting challenge that might make us do some out of the box things and it would make it a little bit more of a scholastic endeavour.” Joe said that the goal was to use wood in the construction of the car in every possible application - wood is our only naturally renewable building material, it is biodegradable and takes a small amount of energy to produce. Also, according to Joe, wood has a better strength-to-weight ratio than steel and aluminium. Every wooden part of the Splinter is made from composite construction. Each wheel consists of over 275 individual pieces. The wheel centres are made from rotary-cut oak veneer, covered by a walnut sunburst on the outside face and a cherry sunburst on the inside face. The Splinter's engine is a 7.0L small-block V8. The chassis is built almost entirely of wood composites, the body is made from woven strips of cherry veneer with a balsa core. Even though the car is not comfortable and may be impractical, Joe said that the goal in creating this car was to explore new ideas and perceptions of wood. He said: “The car was built as a design and build exercise to kind of show people what's possible and try to figure out for ourselves what we thought was possible.”

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Motor
Transcript
00:00I've wanted to design and build my own car for my whole life and we thought
00:06building it out of a material like wood would present an interesting challenge.
00:10The world's only wooden supercar.
00:23Just a ton of work, a lot of blood, sweat and tears went into it. Obviously a lot of
00:28sandpaper as well.
00:31I'm Joe Harmon. I am the designer and builder of the world's only wooden supercar.
00:40I've wanted to design and build my own car for my whole life and we thought building it
00:45out of a material like wood would present an interesting challenge.
00:54Wood is our only naturally renewable, totally biodegradable building material. It has a
00:59better strength to weight ratio than steel and aluminum. And it's just a beautiful material.
01:03It's a lot of fun to work with.
01:05I think there are roughly 20 different species of wood in the car. We try to stick to North
01:13American hardwoods. From an engineering standpoint we all consider to be interchangeable based
01:17on their density and strength.
01:20Walnut, cherry, maple, birch, hickory, ash. Most of the chassis is birch and maple. Wheels
01:30are walnut. The rest isn't mixed back. So interior wise, all wood steering wheel. There's no metal
01:39in that steering wheel anywhere whatsoever. It's nothing but wooden glue.
01:43A shaft that you see coming through the middle is the gear shift. The transmission is behind
01:49the engine in this car and the shift linkage goes over the top of the engine. Wheels were
01:54a ton of work. They're the most complicated part. Wood's very strong but it's also soft so
01:59when you come to these hard points of metal, you need to be able to spread that load out
02:03over a larger area.
02:09The splinter was built over a nine year period of time. When I was in graduate school I was
02:15lucky enough to where my dad would pay for me to eat and go to school and live so I didn't
02:19have any other responsibilities other than to work on this car. It's a ton of work. Pain, suffering,
02:25and sanding. As far as I can remember the tires are the only completely off the shelf piece
02:32of this car. I knew it would be a ton of work. I get asked the how many hours did this take
02:37question a lot. I tell people 20,000 hours. It was very slow, very time intensive process.
02:43Thinking how did I get myself into all this. It ends up pulling everybody that's close to
02:49you into a project like this. I lived through the ten years of building it. That was quite
02:54an experience. It's still completely relevant today and looks totally different from anything
03:00else I've ever seen. It was a lot of blood, sweat, and tears for sure. Mostly tears on my
03:07part.
03:12It has a seven liter small block V8. We think it makes about 650 horsepower. It has a six speed
03:17manual transmission. Airbag suspension at all four corners so we can adjust the height.
03:21It's a very, very low vehicle and we have to get it on and off of trailers a lot so being
03:25able to pick it up and down helps. It's hot, noisy, uncomfortable.
03:35You can't see out of the back of it. You can barely see out of the front of it. You're
03:38in a really, really low driving position. That's kind of part of what makes it raw and makes
03:44nice and exciting.
03:45It's not exactly the most practical vehicle in the world. It's not very good as a grocery
03:51getter.
04:01The fastest I've been in the vehicle is probably 30 miles an hour. I'm sure it has a top speed.
04:06I have no idea what it is. With the weight and the aerodynamics and the power that it
04:11makes, you know, maybe the engine could push this thing to 200 miles an hour. I don't know.
04:16I feel fairly certain that it will never happen, but it's probably theoretically possible.
04:22The car was really built as a building and engineering exercise to show people that you
04:26could do it. Heat is a concern. What'll happen is if this car gets too hot, it'll start letting
04:32go and the panels will get droopy and they'll fall apart. Every vehicle can catch on fire
04:37fairly easily. It just so happens with this one, there will be less left over at the end
04:42if it does catch on fire.
04:53When I look back on it, I think about all the good times I had. The coolest thing about the splinter
04:56for me was getting to go through this process and realize that I've got the absolute best friends
05:00and family that anybody could ever ask for.
05:05How many splinters did I actually get during the build? I lost track.
05:09I got my fair share for a lifetime's worth.

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