Rajan Wilcox
Making your own nitromethane fuel for RC cars can be a complex process. While it is possible to make your own, the quality of the homebrew depends entirely on the person mixing the ingredients. The main ingredients in RC fuel are methanol, nitromethane, and oil. The nitromethane percentage in the fuel typically ranges from 10% to 40%, but it can be as low as 5% for RC airplanes or as high as 60% for specialty fuels. The oil used can be castor oil, synthetic oil, or a blend of both, with typical percentages ranging from 8% to 14%, or even up to 25%. The type and amount of oil added depend on whether the fuel is for RC cars or aircraft, as RC car engines tend to run hotter.
| Characteristics | Values |
|---|---|
| Main ingredients | Methanol, nitromethane, oil |
| Percentage of nitromethane | Typically 20%, but can be anywhere between 10% and 40% or higher |
| Percentage of oil | 8% to 25%, with 15%-20% being typical |
| Type of oil | Castor oil, synthetic oil, or a mixture of both |
| Cost | $60/gal for nitromethane, about $10/gal methanol and $5/quart of benol |
| Hazmat fees | Methanol carries hazmat fees if shipped |
| Other ingredients | Anti-corrosion inhibitor, anti-foaming substance |
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What You'll Learn
The importance of ingredient quality and blending technique
The performance of your RC car is heavily reliant on the quality of your ingredients and your blending technique. The ingredients must be carefully measured and mixed to ensure the fuel is effective and safe.
Firstly, it is important to source high-quality ingredients. The main ingredients required are methanol, nitromethane, and oil. The nitromethane acts as an oxidizer, the methanol is the main fuel and facilitates the catalytic reaction with the glow plug, and the oil lubricates the engine. The type of oil is significant, with castor oil, synthetic oil, or a blend of both being the most common choices. Castor oil creates a lubricating film when it breaks down at high temperatures, but it can be messy. Synthetic oil lubricates well at low temperatures but burns off at high temperatures. Therefore, the choice of oil depends on the typical operating temperature of the engine. Other potential ingredients include an anti-corrosion inhibitor and an anti-foaming substance.
Secondly, the blending technique is crucial. The ingredients must be mixed in the correct proportions, with typical nitromethane content ranging from 10% to 40%, and oil content ranging from 8% to 25%. The specific proportions depend on the intended use of the fuel, with RC cars and trucks typically using 10%-40% nitro blends, and RC airplanes using lower nitro blends of 5%-10%. It is also important to add the ingredients in the correct order. To avoid the possibility of the fuel becoming shock-sensitive, always add the nitromethane to the other ingredients, rather than adding the other ingredients to the nitromethane.
In conclusion, the quality of ingredients and the blending technique are critical to the performance and safety of your RC car. Careful measurement and mixing of high-quality ingredients will ensure that your RC car runs smoothly and efficiently.
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The right amount of castor oil
The recommended oil percentage for your RC car engine will depend on several factors, including the type of engine and how you use your RC car. For example, an RC car with a hopped-up engine that does a lot of high-speed racing may need a higher oil percentage than one with a stock engine that is not used for professional racing.
It is generally recommended to start with the type of fuel and engine settings recommended by the manufacturer. Once you become more familiar with your RC car and how different nitro blends affect its performance, you can experiment with different fuel mixtures to find the one that works best for you.
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Whether synthetic oils can be used
When it comes to making nitromethane fuel for RC cars, one of the key considerations is the type of oil to use. While some people use castor oil, there is also interest in using synthetic oils.
Synthetic oils can indeed be used in RC car fuel. In fact, some people specifically recommend them for RC cars, citing their effectiveness in lubricating the vehicles' moving parts without causing build-up on gears. Liberty Oil, for example, is a popular brand of synthetic oil that is marketed for use in RC cars and other controlled vehicles. It comes in a 4-ounce bottle with a stainless steel needle tip dispenser, making it easy to apply.
However, it is important to note that not all synthetic oils are created equal. Some synthetic oils may be better suited for specific applications, such as skateboards and roller blades, and may not provide optimal performance for RC cars. Therefore, it is essential to choose a suitable synthetic oil brand and type specifically recommended for RC car fuel.
The ratio of synthetic oil to castor oil in RC car fuel is also a critical factor. Some people recommend a 60%/40% blend of castor oil to synthetic oil, respectively, to ensure proper lubrication without sacrificing performance. Additionally, the overall oil content in the fuel should be considered, with some recommending a total oil content of 10-12% for optimal engine performance.
In conclusion, synthetic oils can be used in nitromethane fuel for RC cars, but it is important to select the right type and brand of synthetic oil and to blend it properly with other ingredients to ensure the best performance and longevity for your RC car engine.
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Whether nitromethane is required
Nitro fuel is a mixture of nitromethane, methanol, and lubricants (synthetic or castor oils). Each ingredient plays a critical role in producing engine power and protection. The extra oxygen in the nitro compound allows the fuel to burn faster and generate more power.
Nitromethane is not a required component of RC car fuel. Some people choose to use just methane, and some use a lower percentage of nitromethane. The percentage of nitromethane in the fuel will depend on the intended use of the RC car. If you are looking to drive your RC car for fun, it is recommended to use a fuel that contains lower nitromethane percentages (10-20% nitro content) and higher amounts of lubrication. This type of blend will help get the most life out of your engine and its components by protecting the parts. Another benefit of using a lower nitro blend is that you can run your RC for a longer period, as there is less nitromethane being combusted.
On the other hand, if you are interested in racing your RC car, it is recommended to use a fuel that has a higher nitro content (25-40% nitro content). With more combustible material in the fuel blend, more power can be generated. However, this also means that you will burn through fuel faster, and operating your RC on higher nitro percentages can have adverse effects on the engine.
The quality of your homemade RC car fuel will depend entirely on the person mixing the ingredients. It is important to be careful about ingredient choice and mixing methods to get a good blend.
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Where to source ingredients
Sourcing the ingredients to make nitromethane fuel for RC cars can be done in several ways, depending on your location and budget. Here are some options for where to find the necessary components:
Nitromethane
Nitromethane is a key ingredient in the fuel mixture for RC cars. You can purchase nitromethane from online retailers like Hyperfuels, which offers various quantities, including quarts, gallons, and drums, with prices ranging from $32.99 to $2,622.50. They also provide free shipping worldwide. Alternatively, you can find nitromethane on Amazon or eBay, where sellers like Torco offer free shipping without hazmat fees.
Methanol
Methanol is another important component in the fuel blend. While it may incur hazmat fees if shipped, you can often find it locally to avoid these charges. Tractor Supply sells methanol under the name Methyl Hydrate, and it should be available at your local speed shops, where they carry it in bulk.
Castor Oil
Castor oil is a common additive in RC car fuel. You can typically find it at Walmart or your local auto store. The amount of castor oil to use in the fuel mixture is a matter of preference, with some recommending 10-12% total oil content and a 60%/40% blend of castor/synthetic oil.
Synthetic Oil
In addition to castor oil, synthetic oil is also used in the fuel blend. You can find synthetic oils at your local auto store or online. Some brands to look for include Klotz, which offers products like Klotz Techniplate synthetic oil.
It is important to note that creating your own fuel blend requires careful research and attention to ingredient choice and mixing methods. The quality of your homemade fuel will depend on your sourcing and blending techniques.
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Frequently asked questions
The three main ingredients are methanol, nitromethane and oil. The nitromethane percentage can vary from 10-40%, with 16-30% being the typical range. The oil content can be anywhere from 8-25%, with 15-20% being the typical amount.
You can use castor oil, synthetic oil, or a mixture of both. Castor oil is messier but creates a lubricating film when it breaks down at high temperatures. Synthetic oil, on the other hand, lubricates well at low temperatures but burns off at high temperatures.
You can purchase nitromethane and methanol in bulk from speed shops. Methanol will likely incur hazmat fees if shipped, so it's best to source it locally. You can find castor oil at Walmart or your local auto store.
