A motorized bicycle conversion system generally encompasses a structural element designed to hold the engine and related components securely to the bicycle. These systems facilitate the transformation of a standard bicycle into a motorized vehicle, offering an alternative mode of transportation. For example, such a system might include a specialized chassis component, mounting brackets, and hardware necessary to attach a small gasoline engine to a bicycle frame.
These systems provide a relatively inexpensive and efficient means of personal transportation, particularly useful for short commutes or recreational purposes. Historically, individuals have sought ways to augment bicycle power, leading to the development of various engine mounting solutions. The benefit lies in enabling users to extend travel distance and reduce physical exertion compared to traditional cycling.
The following sections will delve into the specific considerations for selecting a suitable system, the steps involved in installation, safety precautions, and legal compliance regarding motorized bicycles.
1. Frame Material
The selection of a frame material is paramount when integrating a gas engine into a bicycle. It is not merely a matter of preference but one of structural integrity and enduring reliability. The frame becomes the backbone, bearing the engine’s weight, the vibrations of its operation, and the stresses of propulsion. Thus, the material composition of the frame dictates the longevity and safety of the entire motorized assembly.
-
Tensile Strength and Load Capacity
Steel, a common choice, offers significant tensile strength, capable of withstanding substantial loads without deformation. Aluminum, lighter and corrosion-resistant, requires careful consideration of its alloy and heat treatment to ensure it meets the demands of a motorized application. A poorly chosen material, lacking adequate strength, could lead to frame failure, especially under the constant stress of an engine’s vibrations and the increased speeds attainable with motorized assistance. Imagine a frame, compromised by insufficient tensile strength, fracturing mid-ridethe consequences could be severe.
-
Vibration Dampening Properties
Steel possesses inherent vibration-dampening qualities that help mitigate the engine’s vibrations. This reduces stress on the frame and provides a more comfortable ride. Aluminum, conversely, transmits vibrations more readily, potentially leading to rider fatigue and accelerated wear on components. A rider may experience numb hands and a general feeling of instability. Choosing the right material can make the difference between a smooth, controlled ride and a jarring, uncomfortable experience.
-
Weldability and Modification Capabilities
The ease with which the frame can be welded or modified is critical for integrating engine mounting points and reinforcement structures. Steel is generally more straightforward to weld, allowing for custom modifications. Aluminum welding requires specialized equipment and expertise. The ability to easily add brackets or reinforcements is essential for a secure and robust engine installation. Attempting to modify a frame without considering its weldability could compromise its structural integrity and lead to dangerous failures.
-
Corrosion Resistance and Longevity
The frame’s ability to resist corrosion is paramount for long-term reliability, particularly in regions with humid climates or exposure to road salts. Steel frames often require protective coatings to prevent rust, while aluminum offers natural corrosion resistance. Neglecting this aspect will drastically reduce the frame’s lifespan. Imagine a frame, weakened by corrosion, failing under the strain of the engine. Proper selection extends the lifespan of the system.
The frame material is not merely a passive element. It is a dynamic component profoundly impacting the performance, safety, and longevity of the motorized bicycle. Ignoring these material properties is akin to building a house on a weak foundation the inevitable consequence is a compromised and potentially dangerous structure. The interplay between frame material and the demands of a motorized system requires careful consideration to ensure a reliable and safe riding experience.
2. Engine Compatibility
The selection of an appropriate power plant is not merely a matter of bolting on a motor; it is a meticulous orchestration of mechanical harmony. The heart of the conversion lies in ensuring that the chosen engine integrates seamlessly with the frame, transforming a standard bicycle into a reliable mode of transportation. Incompatibility invites mechanical discord, compromised performance, and potentially hazardous riding conditions.
-
Mounting Point Alignment
The precision of mounting points dictates the security and stability of the engine. If the engine’s mounting interfaces do not correspond precisely with the receiving points on the frame, makeshift adaptations become necessary. Imagine a scenario where the engine’s intended mounting points are misaligned by even a fraction of an inch. A user might be tempted to force the fit, introduce shims, or even attempt to re-drill the frame. These improvisations introduce stress points, compromise the frame’s integrity, and increase the likelihood of catastrophic failure under the constant vibration of operation.
-
Clearance and Interference
The spatial relationship between the engine and the surrounding frame members is critical. Insufficient clearance can result in the engine physically interfering with the bicycle’s components, such as the pedals, chain, or wheels. Picture an engine jutting out too far, obstructing the rider’s pedaling motion or rubbing against the tire. This not only impedes performance but also poses a safety risk. Moreover, it can accelerate wear and tear on both the engine and the bicycle, leading to premature failure.
-
Weight Distribution Considerations
The engine’s weight distribution significantly affects the bicycle’s handling and stability. An engine that is too heavy or positioned poorly can create an unbalanced load, making the bicycle difficult to control. Envision an engine mounted high and to one side, dramatically shifting the center of gravity. This instability renders cornering treacherous, increases the risk of tipping, and strains the frame beyond its intended capacity. Effective weight management is essential for a safe and predictable riding experience.
-
Power Output and Frame Strength
The engine’s power output must be appropriately matched to the frame’s strength and load-bearing capacity. An engine that generates excessive torque can overstress the frame, leading to fatigue, cracks, or even complete failure. Think of a high-horsepower engine overpowering a lightweight frame. The frame may twist under the strain, develop hairline fractures, or ultimately buckle. Selecting an engine that complements the frame’s capabilities ensures longevity and safety.
In essence, “Engine Compatibility” is not a mere checklist item but a fundamental design principle. The careful consideration of mounting points, clearance, weight distribution, and power output is the cornerstone of a safe, reliable, and enjoyable motorized bicycle. A failure to harmonize these elements transforms the project from a practical mode of transportation into a potential hazard.
3. Mounting Security
The tale of the motorized bicycle often hinges on a seemingly mundane detail: mounting security. It is the unglamorous protagonist ensuring the engine, the mechanical heart of the modified machine, remains steadfastly united with the frame. Imagine the converse: an engine inadequately secured, vibrating loose over time, its mounting bolts slowly backing out. The consequences escalate from a subtle rattle to a potentially catastrophic detachment at speed. Mounting security is not merely an attachment point; it is the very linchpin of a safe and functional conversion.
Consider the case of a commuter in a bustling city, relying on their motorized bicycle for daily transport. Their choice, a budget-friendly setup, skimped on proper engine mounting. The vibrations, initially dismissed as negligible, amplified over weeks of use. One morning, navigating a busy intersection, the engine’s mounting gave way entirely. The sudden shift in weight and balance sent the rider tumbling, narrowly avoiding oncoming traffic. The story serves as a stark reminder: compromising on mounting security is trading short-term savings for potentially devastating long-term risks.
The lessons are clear. Robust mounting hardware, constructed from high-grade steel and designed for the specific frame and engine, is paramount. Vibration-dampening mounts further mitigate stress on the frame, reducing the likelihood of fatigue and failure. Securing the engine is not an afterthought but an integral part of the conversion process. Neglecting this vital aspect transforms a practical and efficient mode of transport into a precarious proposition, a gamble with personal safety. Proper mounting security is an investment in peace of mind, ensuring the motorized bicycle remains a reliable and safe partner on the road.
4. Vibration Dampening
Vibration dampening in the realm of motorized bicycle conversions is not a mere comfort feature; it stands as a critical safeguard, a silent guardian against the insidious forces that can unravel the integrity of both machine and rider. The gasoline engine, a source of power, is also a source of relentless vibration, a persistent tremor that can compromise every connection and erode the structural heart of the conversion.
-
Mitigating Frame Fatigue
The frame of a bicycle, designed for the relatively gentle stresses of human-powered locomotion, faces a new challenge when an engine is introduced. The constant vibrations, transmitted through rigid mounting points, can induce metal fatigue, a slow but inexorable weakening of the frame’s structure. Without adequate dampening, hairline cracks may begin to form, imperceptible at first, but gradually expanding until they compromise the frame’s ability to withstand the stresses of operation. Dampening acts as a buffer, absorbing and dissipating these vibrations before they can inflict long-term damage. Imagine a vintage bicycle frame, converted to a motorized configuration, succumbing to metal fatigue after only a few months of use. The cost of replacement far exceeds the initial investment in vibration dampening.
-
Enhancing Rider Comfort and Control
The impact of engine vibration extends beyond the mechanical realm, directly influencing the rider’s comfort and control. Prolonged exposure to high-frequency vibrations can lead to rider fatigue, numbness in the hands and arms, and a diminished ability to react quickly in emergency situations. Vibration dampening minimizes these effects, providing a smoother and more comfortable ride. A commuter relying on a motorized bicycle for daily transport, for example, will find that effective dampening reduces fatigue, allowing them to arrive at their destination feeling refreshed and alert, rather than drained and distracted.
-
Protecting Engine Components
The engine itself is not immune to the damaging effects of vibration. Constant shaking can loosen bolts, strain electrical connections, and even cause internal components to wear prematurely. Vibration dampening not only protects the frame but also extends the lifespan of the engine, reducing the need for costly repairs and replacements. A small investment in dampening materials can translate to significant savings over the long term. Consider the case of an engine that, without proper dampening, suffers a broken electrical connection after only a few weeks of use. The resulting downtime and repair costs could have been easily avoided.
-
Types of Dampening Solutions
Various methods exist to mitigate vibration, ranging from simple rubber bushings to sophisticated gel-filled mounts. The choice of dampening solution depends on the specific engine, frame, and riding conditions. Rubber bushings, while inexpensive, offer limited dampening. Gel-filled mounts provide superior vibration absorption but are more costly. Strategic placement of dampening materials at key points of contact between the engine and frame is crucial for optimal effectiveness. A poorly chosen or improperly installed dampening system can be as ineffective as having no system at all. Therefore, careful consideration must be given to the selection and installation of vibration dampening components.
In conclusion, vibration dampening is not an optional add-on but an essential element of any well-designed “gas bike frame kit.” It serves as a critical bridge, harmonizing the power of the engine with the structural limitations of the bicycle frame, ensuring both longevity and rider safety. Neglecting vibration dampening is akin to building a house on shifting sands the eventual collapse is only a matter of time.
5. Fuel Tank Integration
The marriage of a gasoline engine to a bicycle frame initiates a series of engineering necessities, none more crucial than fuel tank integration. This element, often an afterthought in amateur conversions, determines not only the range and utility of the motorized bicycle but also its safety and aesthetic appeal. Imagine a cobbled-together system, the fuel tank precariously strapped to the frame with bungee cords a disaster waiting to unfold. Fuel sloshing, leaks developing, the constant risk of ignition transforming the ride from a convenience into a hazard. Proper fuel tank integration addresses these concerns head-on, providing a secure, leak-proof, and visually harmonious solution.
The interplay between the fuel tank and the “gas bike frame kit” manifests in several critical design aspects. Location is paramount; a tank positioned too high compromises stability, while one situated too low risks damage from road debris. Material selection matters; durable plastics resist corrosion, while metal tanks, though more robust, demand careful coating to prevent rust. Integration of the fuel line, carburetor, and venting systems requires precise engineering to ensure consistent fuel delivery and prevent vapor lock. Consider the case of a well-designed kit, where the fuel tank seamlessly integrates into the frames geometry, doubling as a structural member. This approach not only maximizes space utilization but also enhances the overall aesthetic, lending a sense of purpose-built elegance to the conversion.
In summary, fuel tank integration is not merely an exercise in containment but a crucial element in the successful and safe operation. A well-integrated fuel tank enhances safety, improves aesthetics, and contributes to the overall reliability of the “gas bike frame kit”. Neglecting this aspect compromises the entire project, transforming a potentially useful machine into a precarious and unattractive contraption. The seamless integration of the fuel tank stands as a testament to thoughtful engineering, elevating the motorized bicycle from a mere novelty to a practical and reliable mode of transportation.
6. Component Durability
The assembly of a motorized bicycle, born from a “gas bike frame kit,” transcends the mere joining of parts. It embarks upon a journey where the longevity and reliability of each component dictate the fate of the entire machine. Component durability becomes the unspoken promise of enduring performance, a commitment to withstand the rigors of the road and the relentless forces of mechanical stress.
-
Engine Mount Integrity
The engine mounts, the silent anchors between the vibrating power source and the frame, epitomize the necessity of component durability. These unassuming brackets bear the brunt of engine torque and road shocks, a constant barrage of force. Should these mounts succumb to fatigue or fracture, the engine’s stability crumbles, transforming a smooth ride into a perilous gamble. Picture a rider navigating a winding road, unaware that a hairline crack has begun to propagate through one of the engine mounts. With each vibration, the crack widens, until, at a critical moment, the mount fails, sending the engine careening towards the pavement. The scene underscores that sacrificing quality in the engine mounts jeopardizes the entire conversion’s integrity.
-
Fuel Line Resilience
The fuel line, a seemingly simple conduit, carries the lifeblood of the engine. Subjected to the corrosive effects of gasoline, constant flexing, and temperature fluctuations, its resilience determines the uninterrupted flow of power. A brittle or poorly manufactured fuel line becomes a ticking time bomb, prone to leaks, cracks, and eventual failure. Consider the consequences of a fuel line rupture during a summer ride. The sudden release of gasoline onto a hot engine creates an immediate fire hazard, jeopardizing both the rider and the surrounding environment. Fuel line durability is not merely a matter of convenience; it is a safeguard against potentially catastrophic outcomes.
-
Drive Chain Endurance
The drive chain, the tireless translator of engine power to the rear wheel, endures constant tension and abrasion. Its links, each a tiny testament to engineering, must withstand the relentless forces of propulsion. A chain weakened by inferior materials or poor manufacturing becomes a liability, prone to stretching, snapping, and leaving the rider stranded. Envision a cyclist pedaling on a deserted road, miles from assistance, when the chain suddenly breaks. The ensuing repair is not only inconvenient but also exposes the vulnerability of relying on substandard components. Drive chain endurance ensures not only smooth operation but also peace of mind.
-
Fastener Strength
The bolts, nuts, and screws that bind the “gas bike frame kit” together, often overlooked, represent the final line of defense against mechanical disintegration. These humble fasteners, subjected to vibration and stress, must maintain their grip, preventing components from loosening and separating. Fasteners crafted from low-grade materials or lacking proper thread engagement can fail under duress, leading to a cascade of problems. Imagine a scenario where the bolts securing the carburetor gradually vibrate loose, disrupting the air-fuel mixture and causing the engine to sputter and stall. This seemingly minor issue can escalate into a major safety hazard, particularly when navigating challenging terrain. Fastener strength ensures that the entire assembly remains secure and reliable, providing a foundation for safe and predictable performance.
These individual components, when viewed collectively, paint a vivid portrait of the importance of component durability in the context of a “gas bike frame kit.” Neglecting the quality of even the smallest part can trigger a chain reaction of failures, compromising the safety and longevity of the entire machine. Component durability is not merely a feature; it is the cornerstone of a reliable and enduring motorized bicycle, a testament to the commitment to quality and the pursuit of mechanical excellence.
7. Legal Compliance
The allure of transforming a standard bicycle into a motorized vehicle through a “gas bike frame kit” often overshadows a critical element: legal compliance. This facet, frequently relegated to fine print or overlooked entirely, dictates whether the modified machine operates within the boundaries of the law or becomes a source of potential penalties and liabilities. The absence of due diligence regarding legal compliance can transform a seemingly simple project into a complex web of legal repercussions.
Consider the case of a retired engineer, eager to revive his cycling passion with the aid of a motorized kit. He meticulously assembled the engine and frame, reveling in the mechanical process. However, he failed to research local regulations governing motorized bicycles. His creation, capable of exceeding the permissible speed limit and lacking mandatory safety equipment, was deemed an unregistered motor vehicle. A routine traffic stop led to fines, impoundment of the bicycle, and the unwelcome realization that his passion project had run afoul of the law. This cautionary tale underscores a crucial point: the potential benefits of a “gas bike frame kit” diminish considerably when it contravenes legal requirements. Adherence to speed limits, proper registration (if required), and the presence of legally mandated safety features such as lights and brakes, are not mere suggestions but essential prerequisites for responsible operation. Ignoring these requirements not only invites legal consequences but also jeopardizes personal safety and public well-being.
In conclusion, legal compliance forms an indispensable component of any responsible “gas bike frame kit” endeavor. It acts as a guiding principle, ensuring that the transformation of a bicycle into a motorized vehicle aligns with the established legal framework. Understanding and adhering to local regulations is not merely a matter of avoiding fines but of fostering a culture of safety and responsibility. The journey from bicycle to motorized vehicle should be undertaken with the same diligence and awareness that one would apply to operating any other motor vehicle on public roads, ensuring that enthusiasm for mechanical ingenuity does not eclipse the paramount importance of legal compliance.
Frequently Asked Questions About Gas Bike Frame Kits
The world of motorized bicycles presents a fascinating intersection of mechanics and personal transportation. However, navigating this landscape often brings forth a series of questions, concerns, and misconceptions. The following seeks to address some of the most common inquiries surrounding the utilization of “gas bike frame kit”, aiming for clarity and informed understanding.
Question 1: Is assembly of a gas bike frame kit a straightforward process suitable for individuals with limited mechanical experience?
The narrative of the novice mechanic attempting to assemble such a system often serves as a cautionary tale. While kits are designed with a degree of user-friendliness, successful assembly necessitates a fundamental understanding of mechanical principles and tool usage. The anecdote of the individual who inadvertently reversed the engine’s rotation, leading to a cascade of mechanical complications, underscores the importance of meticulous attention to detail and a willingness to seek guidance when necessary. The process is not insurmountable, but it demands patience, precision, and a healthy respect for mechanical intricacies.
Question 2: What are the primary safety considerations when operating a bicycle equipped with a gas bike frame kit?
The narrative often begins with the seasoned cyclist, confident in their abilities, who underestimates the dynamics of a motorized bicycle. The increased speed, altered weight distribution, and engine vibrations introduce new challenges. The tale of the cyclist who failed to adequately reinforce the brakes, resulting in a near-miss collision, emphasizes the need for upgraded braking systems. Likewise, the cautionary tale of the rider neglecting proper helmet usage serves as a stark reminder of the inherent risks associated with motorized transportation. Vigilance, protective gear, and a heightened awareness of surroundings are paramount.
Question 3: Does the installation of a gas bike frame kit automatically render a bicycle illegal for use on public roads?
The regulatory landscape surrounding motorized bicycles varies significantly across jurisdictions. The story frequently recounts the unsuspecting rider, proudly displaying their creation, only to be met with legal challenges. The anecdote of the individual whose bicycle was impounded for exceeding the permissible engine displacement underscores the importance of understanding local regulations. Careful research and compliance with speed limits, registration requirements, and equipment mandates are crucial to avoid legal entanglements. What is permissible in one location may be strictly prohibited in another.
Question 4: How significantly does a gas bike frame kit impact the lifespan and maintenance requirements of a bicycle?
The transformation from a purely human-powered machine to a motorized vehicle inevitably introduces increased wear and tear. The narrative often involves the meticulous cyclist who discovers the accelerated degradation of components under the stress of engine power. The tale of the individual who neglected regular chain lubrication, leading to premature chain failure, emphasizes the need for heightened maintenance. Similarly, the anecdote of the rider who failed to address frame vibrations, resulting in metal fatigue, underscores the importance of preventative measures. Regular inspections, diligent lubrication, and prompt repairs become essential for maximizing the lifespan of the motorized bicycle.
Question 5: Are there specific engine types that are inherently more reliable or better suited for use with a gas bike frame kit?
The selection of an engine is not merely a matter of power output, but of compatibility and reliability. The story frequently recounts the enthusiastic builder who opted for an untested engine model, only to encounter a series of mechanical failures. The anecdote of the individual whose engine suffered constant carburetor issues emphasizes the importance of selecting a reputable engine with readily available replacement parts. Likewise, the tale of the rider who underestimated the importance of engine cooling, leading to overheating and damage, underscores the need for proper engine selection. Research, reviews, and a preference for established engine models are prudent steps.
Question 6: What are the most common pitfalls to avoid when selecting and installing a gas bike frame kit?
The path to a successful motorized bicycle conversion is often fraught with potential missteps. The narrative frequently features the overconfident individual who underestimated the complexity of the task. The tale of the builder who failed to properly align the engine, resulting in chain misalignment and premature wear, emphasizes the need for precision. Similarly, the anecdote of the rider who neglected to reinforce the frame, leading to structural failure, underscores the importance of robust construction. Thorough research, meticulous planning, and a willingness to seek expert advice are essential to navigate the potential pitfalls and achieve a reliable and safe motorized bicycle.
In essence, navigating the world of “gas bike frame kit” demands a blend of mechanical aptitude, a commitment to safety, and a respect for legal regulations. Armed with informed knowledge and a mindful approach, the transformation from bicycle to motorized vehicle can be both rewarding and responsible.
The following sections will delve into case studies, exploring real-world applications and demonstrating the practical considerations involved in selecting, installing, and maintaining such a system.
Navigating the Realm of Gas Bike Frame Kits
The siren song of motorized bicycling beckons many, promising an affordable and efficient mode of transportation. However, the path to a reliable and safe motorized bicycle is paved with potential pitfalls. Before embarking on this endeavor, heed these tips, gleaned from the experiencesboth triumphant and cautionaryof those who have traversed this mechanical landscape.
Tip 1: Prioritize Frame Integrity Above All Else. A tale is often told of a builder who, seduced by cost savings, selected a frame of questionable origin. Months later, traversing a familiar road, the frame buckled unexpectedly, ejecting the rider. The lesson: The frame is the foundation. Invest in a robust, reputable frame designed to withstand the added stresses of an engine. Scrutinize the welds, assess the material quality, and verify its load-bearing capacity.
Tip 2: Respect the Power of Vibration Dampening. Another account recounts a rider who dismissed vibration dampening as mere marketing fluff. The consequences were swift and severe: loose bolts, cracked brackets, and a ride quality that bordered on unbearable. Vibration is the insidious enemy of any motorized system. Implement vibration-dampening mounts at every critical junctureengine mounts, fuel tank supports, and any point of contact between the engine and frame.
Tip 3: Seek Expert Guidance When Faced with Uncertainty. A common narrative emerges of a builder, armed with only YouTube tutorials and a misplaced sense of confidence, attempting a complex modification. The results were predictably disastrousmisaligned components, stripped threads, and a general sense of mechanical disarray. When confronted with a task that surpasses your skill level, swallow your pride and seek the counsel of an experienced mechanic. It is a far wiser investment than a pile of damaged parts.
Tip 4: Embrace the Importance of Meticulous Fuel System Management. The story frequently involves a rider who neglected the fuel system, resulting in leaks, vapor lock, and a pervasive smell of gasoline. The consequences ranged from minor inconveniences to serious fire hazards. Ensure the fuel tank is securely mounted and properly vented. Use high-quality fuel lines that are resistant to deterioration. Implement a fuel filter to prevent contaminants from reaching the carburetor. A clean and well-maintained fuel system is crucial for both performance and safety.
Tip 5: Uphold Vigilant Maintenance Practices. The tale is oft-repeated of a rider who, after the initial thrill of motorization, neglected the ongoing maintenance requirements. The result was an accumulation of minor issues that eventually culminated in a major breakdown. Regularly inspect all components for wear and tear. Lubricate the chain, check the brakes, and tighten any loose fasteners. A proactive maintenance schedule will extend the lifespan of the bicycle and prevent costly repairs.
Tip 6: Scrutinize Engine Compatibility with Frame Design. The cautionary narrative often highlights the enthusiast who chose an engine that overwhelmed the frame’s structural capacity. The consequences ranged from compromised handling to catastrophic frame failure. Consider the engine’s weight, dimensions, and power output in relation to the frame’s design specifications. Avoid overpowering a lightweight frame, and ensure that the engine mounts are compatible with the frame’s attachment points. Harmonious engine and frame integration is key to a balanced and safe ride.
In essence, the realm of “gas bike frame kit” rewards diligence, knowledge, and a commitment to safety. By heeding these hard-earned lessons, one can transform a bicycle into a reliable and enjoyable motorized companion.
With these tips in mind, the following section will discuss common troubleshooting scenarios, helping to equip you with the knowledge to address potential issues that may arise during the ownership of a motorized bicycle.
The Road Ahead
The journey through the world of “gas bike frame kit” reveals a path laden with both opportunity and responsibility. A simple desire for efficient transport can quickly become a complex undertaking, demanding attention to detail, adherence to regulations, and a unwavering commitment to safety. The transformation of a simple bicycle into a motorized vehicle is not a mere assembly of parts; it is the creation of a new entity, one that demands respect and understanding.
Let the tales of success and failure serve as a guide. Approach the endeavor with caution, seek knowledge, and prioritize safety above all else. The road ahead is open, but only those who tread it wisely will arrive at their destination unscathed. The potential for affordable, efficient transportation exists, but only with a steadfast commitment to responsible practice will the promise of the “gas bike frame kit” truly be realized. The fate of this evolving form of transportation rests on the shoulders of those who dare to embrace it.
