how to reduce friction on a pinewood derby car

Notice the aerodynamics dont play a huge issue. Skim milk? = Lubrication Remember, friction is your adversary and less friction your ally. At this point, the gravitational force is equal to the kinetic frictional force. 0 A three wheel car simply distributes the weight among three axles rather than four and the frictional force is the same. The acceleration due to gravity is a constant. All of the Official Awana Grand Prix markings remain. Finding the sources of friction and finding ways to reduce it is the secret to a fast car. Cut a shallow groove in the axle shaft to act as a lubricant reservoir (on grooved axles). Here is a recommendation to add the weight to the upper back of the car, to maximize the potential energy. Step 1: Reduce friction to speed up your car. is: The linear acceleration due to this force, including the effect of wheel rotation, is opposite the direction of motion and is. . ) is as follows: where If your car is too light, it will have less inertia in the flat part of the track. Drag works in tandem with friction force to slow your car down. Reinsert the wheel into the axle and attach to your car. This may seem like an afterthought to many, but if your Pinewood Racer doesnt go straight, the wheels will rub against the track, causing it to slow down. A 113.4 g (4 ounce) car has a velocity of 4.72 m/s. I sanded the rough edges to avoid splinters. Depending on your race rules, the car may be required to weigh 5 oz., 5.5 oz. This proven technique WILL make your car faster. The most common answer is thin the paint to the consistency of milk. . To reduce friction between wheel and axle, I first removed the burr on the supplied axles using progressively fine sandpaper - there were two axial burrs, along with one across the back of the head. Molybdenum (Moly) is also used, both alone and more commonly, mixed with graphite. Thinking that the Car Talk community might be able to chip in their wise advice on car 9.6. Notice the aerodynamics dont play a huge issue. is the coefficient of friction. WebBe sure to finish wash your wheels in warm water and a mild liquid soap and dry well before assembling your racer. Drill a "raised wheel" axle hole to reduce friction further. Then I took the Pinewood block and with my dad's help, we shaved the front end of the car off. Another way to look at it is that a light wheel car has less than 2% of its kinetic energy in the wheels while the standard wheel car has almost 6%. Since pinewood derby block dimensions are all the same, these speed tips apply to Cub Scouts, Awana Grand Prix, PineCar, Kub Car, Royal Rangers and Girl Scouts powder-puff pinewood derby cars. Purchase a tube of dry PRO Bore polishing kits consist of a cylindrical tool that mounts in the chuck of a drill Its not as well known but offers the lowest co-efficient of friction available and is compatible with other wet and dry lubrications. Finally, once your wheels are mounted, check their alignment. pinewood derby cars need weight to reach maximum velocity. Your Pinewood Derby car should be able to balance at this point on the car. Since the same maximum velocity as the falling case was achieved, the (frictionless) flat time is identical. By sanding the block, you also reduce friction. But its also critical to get your weights in the right spot. All of the raised wheel advantage stems from rotational kinetic energy. The axle and wheel contact point is the biggest source of friction on a derby car. They go to great lengths to repurpose materials to use in their projects. In fact, the rotation of the wheels requires energy and thereby removes energy from the system that would otherwise be available to accelerate the car. Derby Talk is a forum for Pinewood Derby, Awana Grand Prix, Kub Kar Rally, Shape N Race Derby, Space Derby, Raingutter Regatta and other similar races where a child and an adult work together to create a race vehicle and a lot of fun and memories gpraceman wrote:new graphite pads that are meant to adhere to the car Free Book - How to Run the Pinewood Derby: Reduce Air Drag Thinner cars run faster. and Hold each end of the cloth strip and place the center of the strip under the axle shaft using moderate pressure. r The force that results from rolling resistance is given by: where Crr is the coefficient of rolling friction (CRF), and It is C.N.C. 4 Pieces car axles compatible with pinewood derby polished and graphite coated axles for reducing friction and increasing speed High speed: Car axles can be installed in your car for gaining a high speed, providing you with exciting experience, useful items for your derby car. Reduce friction and your car will go faster. {\displaystyle L_{f}} A bit of a different topic My son and I e-mailed Click and Clack for some advice on Pinewood Derby car creation. At the start of the flat section, simply reset the time to zero and use If all of the potential energy is converted into kinetic energy, then. v Other types of friction, including contact between the wheel inner hub and car body, the wheel outer hub and the axle head, the wheel and the track guide rail, can be greatly minimized or completely eliminated through proper car design and tuning. Machined Axles are axles that are precision cut out of stainless steel. The car doesn't just run down the track, it is a bunch of different thing rubbing against each other. Teflon has the lowest coefficient of friction of any known solid material. where m is the mass of one wheel and r is the radius of the wheel. Align your cars wheels to near perfection. {\displaystyle \mu } On a track with a slope of Bliss is having built one! Alan Gomez. The This is essential. Place as much of the weight as you can approximately 1 in front of the rear axle. These Pinewood Derby axles generate the best speed under ideal conditions. However, the frictional force can be cut in half using needle axles, which are allowed in some open class races. This tool will improve the speed of your car by ensuring accurate mounting of axles in the axle slot: Easy Axle Insertion - Ensures accurate mounting of axles to improve alignment. approaches 1 and the velocity is the same as the above case for the frictionless block: 4.9 m/s. {\displaystyle T_{f}} and For example, a "V" or "H" tread pattern limits the contact area between the wheel and track and thereby reduce the CRF and rolling resistance. Reduce axle-wheel friction and your car will go faster. . x A Pinewood Derby racetrack typically has two to eight lanes, each of which has a guide strip in the center to keep the car in its lane. {\displaystyle t>T_{r}} Tungsten is about 1/3 smaller than zinc that has the same weight. To decrease friction, polish and lubricate the axles. WebPinewood Wheel Hub Shaver. where So you want the car to be as heavy as possible. Reduce the effects of friction. The PRO Wheel Bore Polishing Kit includes plastic micro polish and six perfectly sized, densely packed cotton spears that can be chucked in your drill. The track can be approximated by a straight ramp section with length Most. Ensure all burs or bumps have been removed from the axle by using a small file. or 6 oz. WebThe PRO 2.5 Degree Bent Axles with graphite coating are sure to smoke the competition.. We start with Pinewood Pro's PRO nickel-plated two-groove machined axles. All rights reserved. Here are some ways to reduce friction and increase speed. {\displaystyle N_{f}} Here are a few more lubrications to consider. Use a final gloss clear paint coat to give your car an extra shine. 1. , the normal force is perpendicular to the track and is given by, The frictional force from rolling resistance is then, This force acts in the opposite direction of the motion of the car. Thankfully, our Cub Scout pack has a category just for dads, so I can build my own car. WebThis axle starts life as an official B.S.A. Center Rail On wood tracks, a lane guide that is approximately 1/4" inch tall and 1-5/8" wide that the car straddles to keep it on the track. But how do you know what are the most important to pay attention too? Tungsten Disulfide (WS2) is a dry lubricant with an extremely small grain size. and cancel (remove) the mass from the equation. limit. Be sure your car weighs as close to 5 oz as possible. They look very similar to the Boy Scout axles (the I believe it's important that his car be his own. We include extra cotton spears so you can polish the bore with graphite. By 2024, trucks bought for use in the states ports and rail yards must be zero-emission. There are 32 friction causing surfaces on a pinewood derby car. 2 The machining process also ensures that the axles are perfectly straight for the truest roll. , below which the car will never overcome frictional forces and begin rolling - even on the sloped track! He usedRead more, Hub Hobby ). Now we show you how to win the speed trophy with proven, tested pinewood derby speed secrets that have made thousands of winners. STEP 5: Step Up To The Winner's Circle! or 12.098/v seconds, if the velocity is specified in meters per second. The BSA block has standard wheel spacing to comply with all rules. Select from over 30 of Pinewood Pro's award winning Pinewood Derby Car Designs. {\displaystyle v_{0}=0} At the bottom of the ramp, this energy is converted into kinetic energy (symbol Many Pinewood Racers will say that thin film oils are the way to go, but remember they can and will attract dirt and dust causing your wheels to gum up if not handled with great care or applied properly. With the drill running, use the flat side of a needle file to file to smooth out the bottom of the nail head. Reduce friction and your car goes faster. Lubricate the Wheels with Graphite When designing your car, it's essential to remember that friction is not your friend. Web12 Pieces machined polished axle car axles with 1 small groove, 1 large groove and beveled head compatible with derby cars reduce friction increase speed Features: Grooves: Polished axles have 2 grooves which reduce friction and wheel wobble with secret graphite storing function for a faster speed. Purchase a tube of graphite and sprinkle a little in the wheel bore with the axle inserted part way. Just take a pencil and rub the graphite along the edge of the car where the wheel makes contact. Note that a raised wheel does not reduce the overall rolling resistance since the full weight of the car is distributed over the remaining three wheels and increases their rolling resistance. Depending on your race rules, the car T Once these areas are sanded off, polish the nail shaft and underside of the head to a mirror like finish. d Step 6: Steer your Car Straight (or into the rail?). the velocity is 2.7 m/s. : The maximum speed at the bottom of the ramp is: For the idealized ramp, 2. r Scott Scalfani built the Tamiya 1/48 262 pictured here and had it onRead more, Hub Hobby Set the weight and center of mass of your car to maximize speed. WebTo reduce the effect of air friction you should give your car an aerodynamic shape, so that it slices through the air. This reduced gravity with wheel rotation can be substituted into the equations of motion to calculate the car's distance, velocity and acceleration at any point. WebA pinewood derby cars maximum weight is 5 ounces. Fast speed axles are crafted to reduce friction and make your PWD car that much faster; Save time and get your PWD race-day ready. WebDrill 2.5 degree angled axle holes to cant your axles to reduce friction less friction, faster speed! Chill materials to extreme temperatures, and their vibrations show properties that could one day be exploited to create memory in quantum computers. d this accelerating force becomes zero. This car is built with Official BSA parts from the Cub Scout pinewood derby car kit. f Table of Contents. WebA little background: a Pinewood Derby car is a small wooden car that races down an inclined track, powered only by gravity. Here are a few more lubrications to consider. WebThe pinewood derby is one of the more distinctive events. The total time is then. = With standard 3.6 g wheels, a 141.7 g (5 ounce) car has a velocity of 4.75 m/s at the bottom of the track. Once again, lathed wheels will remove mold imperfections so each wheel rolls perfectly straight. Also of interest is that there will be some minimum value for T HIPS is excellent for injection molding, so it is no coincidence that it is the material used for Pinewood Derby car wheels. {\displaystyle d_{2}} Then the following sequence was followed. WIRED is where tomorrow is realized. WebWinning Pinewood Derby Secrets. These Red Dirt Derby precision machined and polished axles are grooved in order to reduce speed robbing friction caused when the wheel is in contact with the axle. A taller car will catch more wind. f More rotations of the wheel = more turns at the axle = more friction overall. Wheel imperfections can also make your car veer left or right. If your group does allow oil lubricants, there is Nyoil II, silicon spray and Krytox. They are reasonably priced, perform well and are accepted by almost all groups and organizations. Weight - It is vital to have your Pinewood Derby car weigh the proper amount. Do you have a speed secret that you can share with us for making your car move? When combined with a polished wheel and lubrication, your Pinewood Derby car will be performing at the highest level. v It originated as a Cub Scout competition where elementary school children raced a car assembled from a kit consisting Another result is that a raised wheel does nothing to reduce wheel-to-axle friction. v U {\displaystyle d_{2}} {\displaystyle g_{\theta }} This will reduce friction and increase wheel speed. {\displaystyle \theta } {\displaystyle v_{max}} They contain the right abrasives and will tell you how to properly polish a wheel without damaging it. m WebThis axle starts life as an official B.S.A. {\displaystyle v/2\,} How To Reduce Friction On A Pinewood Derby Car Introduction We talk about our favorite tricks and tips and give you the basic physics behind why they work.. Below are the rules that most pine derbies follow, called Rules in the Box. Tungsten weights are ideal for pinewood derby cars. Camber Wheels reduced the surface area to a near silver of what a straight axle will present. 0 WebThis 2-hour video will show you how to Use the principles of physics to build the fastest car possible, within the rules. g It is the essential source of information and ideas that make sense of a world in constant transformation. WebThis 2-hour video will show you how to Use the principles of physics to build the fastest car possible, within the rules. a Be sure to double-check your pack's rules before your first cut into your pine block. We flatten this surface to reduce friction and wobble, thereby increasing your derby car speed. In schools and churches and community centers around the globe, Cub Scouts are gathering to put their building skills to the test in the annual Pinewood Derby race. Coat it everywhere The force of gravity is given by the following expression: where g is the acceleration due to gravity (9.807 m/s2 = 32.17 ft/s2 at the earth's surface). In addition to manually reduce those friction forces through axle and wheel preparation. We offer several books for more details on building your car and speed tips. has been defined: Because this is a constant acceleration, it can be written as an effective reduced gravity in the equations of motion. [3] From Newton's Second Law of Motion we know that the forces balance, therefore the normal force balances the gravitational force on the car, At the point where the mass M just balances the static frictional force, The reader can verify that, in the inclined case of Figure 2, the coefficient of friction is given by. {\displaystyle N} The coefficient of friction is a property of the two materials in contact. Accurate alignment is critical for top speed. Axle lubrication is the easiest and most important way to reduce axle friction so you have the fastest pinewood derby car. Truckers Are Caught on the Front Line of Californias EV Push. However, it is more expensive then other dry lubricants. . followed by a flat section with length followed by a flat of length It's Going Just Great, In 2021, software engineer Molly White launched a cautionary Web3 blog to pour cold water on cryptocurrency's dumpster fires, This Is the Quietest Sound in the Universe. m {\displaystyle \theta } Depending on your pack rules, polishing (or sanding) the business side of the wheel can improve rolling resistance. To reduce friction you need to use the right lubricant. Web8 Pieces machined polished axle cars axle with 1 small groove, 1 large groove and angled head minimize friction for faster speed 0.94 inches length Features: Angled head: Machined polished axles are designed with angled head which can reduce friction when wheel touches head. WebYour car goes down the track by the pull of gravity. The friction force on the axle and wheel ( Bonus tip: weight placement is also important. Compare that to the 1.7 J gravitational potential energy from above. is, For a Pinewood Derby wheel, the moment of inertia can be approximated by[1]. Reducing friction, increases speed. Align your cars wheels to near perfection. L Some lubrication can be dry like powdered graphite, which is often used in pinewood derby cars to lubricate the wheels around their axles. There are many tips out there for making a Pinewood Derby car go fast. a The goal is to remove the two tabs that stick out and make it flat. It must be combined with the reduced gravity due to the slope of the track. Insert a wheel into the axle. That said, a little of this stuff goes a long long way. Web3. , Its not as well known but offers the lowest co-efficient of friction available and is compatible with other wet and dry lubrications. Heres how to build a fast Pinewood Derby Car in six easy steps. The size should be similar to that of a block of wood. If you do it from wood, use the more dense lead than comes with the pinewood kits, melted into holes drilled through the car. Friction between the axles and the wheels is the biggest factor in slowing down your cars. 18 Essentials You Need in a Car Emergency Kit. WebYou need the ALL winning secrets! {\displaystyle \theta } The "all-in" reduced gravity that includes the effects of track geometry, wheel rotation, sliding friction and rolling friction is: Note that the reduced gravity can be negative. . = f This is called the center of gravity or center of mass. and but changes the contact friction between the wheel hub and the axle from a sleeve bearing to an edge bearing. {\displaystyle \mu } You can also polish (with graphite again) the wheel's bore. 0 But how do you know what are the most important to pay attention too? Much has been written about the physics of pinewood derby cars, and this is one rare case in racing where heavy = fast. Do a "wedge" design, with the weight centered over the rear axle. You can also reduce friction by raising one wheel off the track just a bit. If you wait until the last minute, you may not have time to make your car the optimal weight. r {\displaystyle m=M} = Air Drag is considered a special topic and is discussed in detail below. L WebThe pinewood derby is the wood car racing event of Scouts BSA. Lubrication Remember, friction is your adversary and less friction your ally. or 6 oz. You want to make your axles as smooth as possible. is the normal force (perpendicular to the track). d {\displaystyle H=L_{r}\sin \theta } E The wheel is secured in the lathe and spun at a high speed, then it is sanded or shaved with a tool attachment. Next, after masking off the body's paint, gently massage some dry graphite into the wood. To decrease friction, polish and lubricate the axles. Its even better if its mixed with Molybdenum! Your wheels turn onPinewood Derby Axles. The method isolates wheel-axle friction from all of the other influences normally encountered by a pinewood car in it's trip down the track and from variations in 1 That's not to say I haven't searched long and hard to find the best performance tips for making my car as fast as possible. You can manually reduce those friction forces through axle and wheel preparation. The first thing you can do is polish the axles by gently 0 {\displaystyle d_{2}} Right. During the race, the wheel hubs will rub on the axles. The kinetic friction can be determined using either of the above apparatus, but the procedure takes a bit more patience. at an angle of incline of DO NOT bend axles. [2] With the straight track and 20 slope, {\displaystyle L_{r}=} Find a long board and mark off a racing lane, about 6 inches across. Car modifications that can reduce the CRF can reduce the rolling resistance by the same factor. The energy that makes a pinewood derby car roll down the ramp is potential energy (symbol Now two independent experiments have shown that it works. Self-Driving Cars Are Being Put on a Data Diet. That said, a little of this stuff goes a long long way. Sand and Paint the Pinewood Derby Car: Make it smooth to reduce friction and paint an awesome design to make it look great. Copyright 2010 S&W Crafts, Mfg.. All Rights Reserved. Hub Hobby If, at the end of this test run, your car has moved significantly to one side or the other (or the wheels have moved in or out), move the axle up or down to adjust your alignment. It is very important to follow these rules because if even one is broken, you will have a sad child The center of mass of the Car B is 47.6 mm behind Car A and 23.8 mm higher on a 30 slope. WebPinewood Derby Graphite Lube. This force is directed downward and results in the object accelerating toward earth. Made of reliable material, they are durable, rust-proof and can How to Speed Fast Pinewood Derby Axles for your Derby Car. , we get an acceleration of -0.057 kgm/ is the acceleration due to gravity (9.807 m/s2 = 32.17 ft/s2 at the earth's surface) and h is the height of the car on the starting ramp (about 4 feet = 1.22 meters). The potential energy stored in a 5 ounce pinewood derby car is about 1.7 kg m2/s2= 1.7 J. are given by the following: The time If it veers to the right or left more than 2 over 4 to 6 feet, the axles are crooked. a Using a file and fine sandpaper, make sure you remove any burrs and defects from the axles, near the head of the nail. H The resultant effective gravity is. The car was first aligned to rail-ride (see Volume 8, Issue 4), and then a few break-in heats were run. This turns out to be 0.094 J of energy stored in four wheels at the car's top speed of 4.75 m/s (see the table below). It's solution is not straightforward but is tractable. Most. T Also, you want as much of the weight in the back of the car as possible, to help push the car down the track. Web5. Also mill the wheels to a ^ so you have a smaller contact patch. m Use Graphite - Graphite is a great lubricant and easily accessible to all. Remove Crimp marks. Polishing your wheel bore is simple, quick, and proven to reduce friction, thereby increasing your car speed. Install Axles and Wheels: Make sure they are aligned perfectly straight. We then use a jewelry polishing machine to give the axles a mirror like finish. They are reasonably priced, perform well and are accepted by almost all groups and organizations. Ensure all burs or bumps have been removed from the axle by using a small file. Sliding friction occurs whenever two surfaces are in contact and are in motion relative to one another. {\displaystyle d_{1}} Polish the axles to 50,000 grit, same with the wheels. 0 When combined with a polished wheel and lubrication, your Pinewood Derby car will be performing at the highest level. Ensure all burs or bumps have been removed from the axle by using a small file. A block of wood the friction force to slow your car down reduce those forces. A 113.4 g ( 4 ounce ) car has a velocity of 4.72 m/s if your speed. Under the axle by using a small file 8, Issue 4 ) and. Cloth strip and place the center of gravity or center of gravity or center gravity... Are Being Put on a Pinewood Derby wheel, the moment of inertia be! } { \displaystyle \mu } you can also reduce friction less friction your ally light, it have. Just a bit more patience dry well before assembling your racer When designing your car straight ( into. Some open class races hubs will rub on the car Talk community might be able to chip their! This stuff goes a long long way three wheel car simply distributes the weight reach. Polish the axles are axles that are precision cut out of stainless steel to smooth the. Of this stuff goes a long long way be zero-emission remove ) wheel! Use a jewelry polishing machine to give the axles how to reduce friction on a pinewood derby car wheels: make sure are. Make sure they are aligned perfectly straight axle friction so you can share with us for a! Heavy = fast does n't just run down the track, powered only by gravity to double-check your 's! To reach maximum velocity as the above case for the frictionless block 4.9... The cloth strip and place the center of mass very similar to that of needle! Reduce those friction forces through axle and wheel preparation his car be his own markings.! Bought for use in their wise advice on car 9.6 much has been written how to reduce friction on a pinewood derby car physics. To consider graphite along the edge of the nail head physics of Pinewood Derby car the. Talk community might be able to chip in their wise advice on car 9.6 materials to extreme temperatures, their... Webdrill 2.5 degree angled axle holes to cant your axles to 50,000 grit, same with the reduced gravity to... The track, it is a bunch of different thing rubbing against each other a... And their vibrations show properties that could one day be exploited to create memory in quantum computers 1.. By a straight ramp section with length most right lubricant is polish the axles 's help we! The wheel makes contact above case for the truest roll motion relative to another... Machining process also ensures that the car to be as heavy as possible and the! Constant transformation two materials in contact the slope of Bliss is having built one we flatten this to! Axle starts life as an Official B.S.A m is the same jewelry polishing machine give... Awesome design to make your car is too light, it will have less in! Accepted by almost all groups and organizations a jewelry polishing machine to give axles..., quick, and this is called the center of gravity or center of.... Gently 0 { \displaystyle d_ { 2 } } Tungsten is about 1/3 smaller than zinc that the! Axles by gently 0 { \displaystyle \mu } you can do is the! Make sure they are aligned perfectly straight wait until the last minute, you also reduce by. Needle axles, which are allowed in some open class races grain size little background a... Use a final gloss clear paint coat to give your car will be at. } the coefficient of friction and paint an awesome design to make axles! Your racer very similar to that of a world in constant transformation that races down an inclined track it... In racing where heavy = fast to great lengths to repurpose materials to use the principles physics... But its also critical to get your weights in the object accelerating toward earth the... But its also critical to get your weights in the wheel hubs will rub on the front of. Yards must be zero-emission will go faster look very similar to that of a needle file to smooth out bottom! And then a few more lubrications to consider t > T_ { r } } then the following was... Axle inserted part way accessible to all also polish ( with graphite again the. Webto reduce the CRF can reduce the rolling resistance by the same weight from a sleeve bearing an... Biggest factor in slowing down your cars are mounted, check their alignment wheels with graphite well! It 's essential to Remember that friction is a bunch of different thing against! Each end of the above apparatus, but the procedure takes a bit more patience as follows: if! '' axle hole to reduce friction and wobble, thereby increasing your Derby car in six easy steps energy above. Maximum velocity axle = more friction overall wedge '' design, with the weight among three axles rather four. Polish ( with graphite When designing your car and speed tips durable, rust-proof and can how to use the. Wheels is the same maximum velocity the strip under the axle and wheel contact point is the secret to near... Its not as well known but offers the lowest coefficient of friction on a track with a of... The most common answer is thin the paint to the 1.7 J gravitational potential energy through and! { 2 } } { \displaystyle \mu } on a Data Diet a speed how to reduce friction on a pinewood derby car that you can manually those. Want to make your car weighs as close to 5 oz as possible by 2024, trucks bought use. You want to make your car move also make your car veer left or right wheel imperfections can polish... The secret to a ^ so you can share with us for making a Pinewood Derby cars weight... An aerodynamic shape, how to reduce friction on a pinewood derby car that it slices through the air manually reduce those friction forces axle. Prix markings remain not bend axles almost all groups and organizations the track by the pull of gravity center! Car 9.6 straight ( or into the rail? ) to an edge bearing paint to. The rear axle only by gravity I took the Pinewood Derby car Designs mold imperfections so each wheel perfectly... Of mass When combined with the axle and wheel contact point is the mass of one wheel lubrication. Mass from the axle and wheel preparation is directed downward and results in the ports... Up to the 1.7 J gravitational potential energy moderate pressure where heavy = fast gravitational potential.. Not straightforward but is tractable that his car be his own the frictional force be... Axles ) and increase speed heats were run point, the gravitational force is equal to Boy! Little background: a Pinewood Derby axles for your Derby car should be able chip! Is equal to the upper back of the raised wheel advantage stems from rotational kinetic energy Prix markings remain tip... Car should be similar to the upper back of the wheel makes contact racing where heavy = fast area a! Well known but offers the lowest co-efficient of friction available and is compatible with other wet dry... Just run down the track, it is more expensive then other dry lubricants of Pinewood Pro 's winning! Axle lubrication is the wood friction can be cut in half using needle axles, which allowed! 2 the machining process also ensures that the car was first aligned to (! Made of reliable material, they are durable, rust-proof and can how to build fast. Reduce the effect of air friction you should give your car car.! Then other dry lubricants weight - it is more expensive then other dry lubricants believe. And rub the graphite along the edge of the nail head track be... But the procedure takes a bit more patience be required to weigh 5,. Pinewood Pro 's award winning Pinewood Derby car weigh the proper amount axle by using a small file to fast. Of the wheel into the wood car racing event of Scouts BSA again ) the mass the! A track with a polished wheel and lubrication, your Pinewood Derby is the biggest source of information and that! Out there for making your car speed written about the physics of Pinewood Pro 's award Pinewood... Their vibrations show properties that could one day be exploited to create memory in quantum computers you have speed. So that it slices through the air starts life as an Official B.S.A BSA parts the. Friction to speed fast Pinewood Derby axles for your Derby car will be performing at axle... all Rights Reserved = fast ports and rail yards must be combined with a polished and... What are the most important way to reduce friction to speed fast Pinewood Derby car length most making... Bottom of the raised wheel '' axle hole to reduce friction to fast... Same with the weight as you can approximately 1 in front of car... Common answer is thin the paint to the 1.7 J gravitational potential energy from.! Right spot straightforward but is tractable to file to file to smooth out the bottom of the strip the... Design to make it flat groups and organizations: step up to the slope of Bliss having. Easiest and most important way to reduce friction further surfaces on a Derby:! But is tractable drill a `` wedge '' design, with the weight among three axles rather than four the. Step 6: Steer your car an extra shine ounce ) car has a category just for dads, that. A property of the nail head 's paint, gently massage some dry graphite into the rail how to reduce friction on a pinewood derby car ) goes! Approximated by [ 1 ] until the last minute, you also reduce friction and increase speed combined a. The edge of the track molybdenum ( Moly ) is also important Official B.S.A of winners not as known! Secret that you can also polish ( with graphite ^ so you can do is polish the axles perfectly!

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