A sandrail, or sand rail, or rail, is a lightweight off-road motor vehicle specifically built for traveling in sandy terrain. Similar in some respects but often mistakenly referred to as a dune buggy or sand car, a sandrail is a different type of specialty vehicle. Sandrails are popularly operated on actual sand dunes. Some of the most popular sand dunes in the United States include; Dumont Dunes CA, Coral Pink UT, Oregon Dunes OR, St. Anthony Dunes ID and the grand daddy of dune riding Algodones Dunes CA (Imperial Sand Dunes). Sandrails can be driven on other types of terrain but are truly designed specifically for the sand.
At the end of World War II thousands of soldiers returning from the war had spent years driving Jeeps, tanks and half-tracks with little or no roads. Having an increased disposable income, these GI's formed the original core of off-road enthusiast. Initially, they used surplus jeeps and cut-up cars to build their off-road vehicles. Soon these "off-roaders" discovered that with little more than a skid plate, they could get a stock air-cooled Volkswagen Beetle to go almost anywhere. Throughout the 1950s the sport continued to develop.
In 1958 Pete Beiring of Oceano, CA took the body frame or "pan" from a damaged Volkswagen and shortened it into a new machine that eventually became the precursor to the dune buggy. This eventually lead to the first production dune buggy called the "Sportster" which was developed around 1960 by the EMPI Imp Company. It was an angular sheet metal vehicle built on a stripped-down Volkswagen chassis. Many others followed including the ever popular Meyers Manx. design. Dune Buggies had a style all their own with fiberglass siding and other wonderful but "body" heavy features.
As the late 1960s and early 70s approached, enthusiasts saw the need for lighter and more powerful sand vehicles easily capable of ascending steeper and higher dunes. Many started experimenting at home by building super light weight vehicle frames from metal tubing often without a roll cage. Many were nothing more than a frame, engine, transmission, wheels and one or two seats. Because of their versatility, light weight and simplicity the air-cooled Volkswagen engine and transmission were the power plant of choice for many owners. It also offered the perfect body arrangement. By placing the motor & transmission in the rear of the frame it allowed the front of the sandrail to remain extremely light and thus able to "float" over the sand dunes. An added value of placing the engine in the rear of the vehicle was that heat created by the motor did not blow into the face of the driver and passengers. From the 1970s forward, sandrail builders continued to develop the delicate balance between weight and power.
When it comes to serious sand dunes, most off-road vehicles including those with four wheel drive are relatively top heavy and can only safely climb or descend steep hills with a mostly perpendicular approach to inclines or downhills. In the case of driving up a steep sand dune, many would simply "dig-in" and get stuck.
Sandrails are ultra lightweight vehicles often weighing in at 800 and 1500 pounds (≈363 and ≈680 kg). They typically use high flotation smooth or farm implement front tires and special rear paddle tires which allow it to skim over the surface of the sand without getting stuck. A sandrail has a low center of gravity which permits it to make tight turns even on the face of a sand dune.
Sandrail frames are built from a tubular space frame chassis that incorporates an integrated roll cage. The distinction between a sandrail and dune buggy or sand car is that the sandrail will rarely have windows, doors, fenders, or full body panels. The sandrail will also be a lighter weight vehicle compared to the sandcar. On most sandrails, the engine is typically at the rear. Some sandrails also use a mid-engine configuration. This design offers favorable weight distribution and traction which is very desirable for dune "hill-climbing."
Engines & Fuel
Originally becoming popular in the 1960s, sandrails used lightweight air-cooled engines like the Volkswagen engine from the VW Beetle and Porsche (~200 pounds) or the Chevrolet Corvair (~350 pounds). Because of the availability of affordable parts, the Volkswagen engine continues to be the mainstay of many sandrails today. More recently, some enthusiast have turned to lighter weight water-cooled engines such as the Subaru boxer or Ford Ecotec engines.
The need for more power comes from necessity and desire when driving in steep sand dunes. This has driven sandrail engine builders to add performance features to engines such as the stock (24 to 50 horse power) Volkswagen engine. This includes: larger pistons, Turbo chargers, dual racing carburetors, fuel injection, and high performance cylinder heads to name a few. Some performance engines can run on premium unleaded gasoline. However, many high performance engines must use racing fuel or fuel additives. A high performance sandrail Volkswagen engine could produce well into the 170-200+ horse power range and as high as 700 horse power with Methanol fuel.
Early sandrails often consisted of little more than a steering wheel, brakes and accelerator. However, today an entire industry is built around all kinds of accessories such as HID & LED headlamps, radios, passenger communications headsets and GPS navigation devices.
Some states in the USA, such as Arizona and Utah, allow the registration of sandrails and other primarily off-road vehicles for "on-road" use. In these states, sandrails registered for on-road use usually must meet the minimum insurance coverage required by normal vehicles. Additionally, they may require modifications to be road worthy this typically includes a wind shield, turning signals and license plate. These requirements may vary by state.
Sandrails have been employed by US state authorities, the United States Border Patrol and even the military. They are still in use today by the Navy SEALs. The military design of these vehicles is based on the Chenowth Advanced Light Strike Vehicle model and have been modified for a third seat above the engine to control a .50 caliber machine gun and other armaments. State authorities, such as rangers at sand dune parks sometimes employ sandrails removing the passenger seat to convert the sandrail into a makeshift ambulance with a stretcher.
Although sandrails are primarily designed for the sand, they have been successfully used on "soft pack" dirt, mud and even snow. Some of these types of applications usually require the use of off-road type tires vs. "sand" tires. They are typically not well suited for rocky terrain due to their mostly limited suspension and lighter duty frames.
Accidents most often occur in a collision with another off-road vehicle. The first rule of safety in a sandrail is to be seen! In many dune areas, all sand vehicles (motorcycles, quads, sandrails,UTVs and sandcars) are required to use an 8 foot antenna whip and flag. This is critical to being seen by other vehicles as a driver traverses from one dune to the next. Most sandrails employ a variety of safety features for the driver and passengers. The most common is the use of a three-point or 4-, 5-, and 6-point safety belt system. Many sand rails may also utilize roll bar padding and fire extinguishers. More advanced safety features sometimes include: arm/wrist restraints, netting for large frame openings, automatic fuel cut-off switches and horns. Additionally, the use of eye protection (goggles/ballistic-grade glasses) is a necessity. Finally, the use of helmets while "duning" is increasing due to the advances in performance. Sand associations along with state and federal land management agencies work to provide dune safety information through pamphlets, online and in classes.
Most dune enthusiast are very environmentally conscious. Organizations such as the American Sand Association(ASA) and state or federal land management agencies work hard to make dune users aware of environmental best practices. This includes pamphlets, seminars and dune clean-ups.
Future, Industry & Associations
Due to its economical cost to build and maintain, access to new parts and good balance between weight and power, the sandrail continues to be used by many enthusiasts today. However, the heavier and typically more powerful sandcar or sand car now represents another style for duners. This style often employs mammoth cars weighing several thousand pounds and using highly advanced suspension systems and transmissions coupled with large performance V8 engines such as the latest GM LS engine series.
The sandrail industry has grown dramatically due to the increased popularity of the sport. New turn-key (ready to go) vehicles can cost between $10,000 – 100,000+, depending on the design. The aftermarket industry has also made parts highly available for the home builder.
Associations such as American Sand Association(ASA)hold event throughout the year in some parts of the country for sand racing and hill climbing. Additionally, these associations provide representation for enthusiasts with legislators and land management officials.
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- Links and information on sand dunes in the United States and worldwide
- Important sand dune enthusiast links
- American Sand Association
- Online forum for the dune buggy and sand rail enthusiast
- Brandt, Marlin (Feb 18 2012). "Informal survey of 100 people at Dumont Dunes 2012".
- "America's TOP 10 Sand Dunes".
- Hibbard, Jeff (1983). Baja Bugs & Buggies. HP books. pp. 2–3. ISBN 978-0-895586-186-3 Check
- Dune Buggy History. "Dune Buggy History". Dune Buggy Archives. Retrieved 2010.
- Sand Sports Magazine. July/Aug.
- All About Performance VW Engines #3 (Summer): 12–13. 2011.
- Hibbard, Jeff (1983). Baja Bugs & Buggies. HP Books. ISBN 978-0-89586-186-3.
- "Arizona Department of Transportation".
- "CA Dune Safety Regulations".
- Hot VW Magazine. March 2011.
- "Sand Cars Unlimited".