Any swing arm can be made to fit with the right tool. Buell suspension high performance motorcycle parts. Aftermarket manufacturers make kits that retrofit an existing radius arm suspension to a parallel fourlink design and use coil springs and a track bar to center the axle. Tuning 4 link rear suspensions for the drag strip custom. Analysis and topological optimization of motorcycle swing arm. Apart from that, the swingarms of the bikes help manage the load distribution of the bike and adjust the center of gravity of the bikes. Dirt modified setup basics for interested fans and new racers. Introducing behind the numbers a new suspension analysis. Modellation and simulation of a front swingarm motorcycle with a dummy driver and a steering control. The downside is problems relating to chain growth and brake jack when the suspension is activated. These points are then fed into their proprietary software and a printout is issued.
Tried and true swingarm swaps kzrider forum kzrider. Hed really like to find an aluminum swing arm for it that fit but i believe the 78 yz125 that had the aluminum swing arm was a different design. On this episode of rock rods tech its trailing arm suspension explained by jake burkey. View and download suzuki rm250 owners service manual online. Net, and i have a 69 std beetle with irs rear that i. With maximums adjustable rear sway bar, this is simply. To check sag the distance between the fender and swing arm first check the distance with the rider off the bike and then with the rider on the bike in full riding gear. This system replaces the old twinshock rear suspension with a. Monoshock suspension improves the center gravity and distributes the weight of the bike and rider to a center point on the bike, thus making it more nimble overall. The intended purpose of a vehicle how that vehicle will be used by its owners plays a major role in the design of a vehicles suspension system. Jun 03, 2016 a swing arm, or swinging arm uk, originally known as a swing fork or pivoted fork, is the main component of the rear suspension of most modern motorcycles and atvs. The benefit of this design, and the reason it has survived successfully for so long, is its simplicity. Dirt track swing arm suspension basics hogan technologies. This article will provide a basic overview of just about all of the different types of front suspensions that have been used on production and racing vehicles since the inception of the automobile.
Shocks free delivery possible on eligible purchases. Why did we start the project with an s10 pro stock truck body. I control rear suspension with an airfx air suspension set up. Sep 01, 2008 follow along as we set up the suspension in our dirt late model project car including the front, rear, and driveline geometry as well as the spring setup in preparation for our first shakedown. Trailing arm suspension explained with jake burkey rock. Motion pro deluxe suspension bearing service tool youtube. Swing arm in one position on the housing so we were going to try and bolt and weld the 4 link brackets using these holes which makes the brackets further forward on the housing. You can use this as a gauge to work out the extents of the suspension travel. Get the performance advantage, increased value and safety a suspended dragster can provide while enjoying a smoother ride.
This basic tech tip guide gives basic knowledge on left rear tuning, things to look for and how to adjust, set up your left rear suspension. Allow 34 weeks for a bare finish arm and 46 weeks for polish. The welding is pristine, and the appearance of these types of parts will compliment the appearance of your atv in addition to its performance. Previously i had begun this on another board and it got too large.
This time frame may or may not be realistic, but you should definitely do it regularly. Dirt bike swingarm maintenance dirt bike resources. A reverse engineering approach was used to model the same. A finely tuned suspension might provide that edge to finally get into the top 10 or allow you to blaze the trails for an afternoon without feeling exhausted after an hour. Cad modeling of the swing arm was done using catia v5 software. Most of the cases the failures are catastrophic in nature. My biggest problem is that i am not totally sure on the correct heights. Therefore, making suspension tuning fully adjustable at 5 points.
Single sided swingarm balancer bc sport bikes forum. Jun 30, 2018 on this episode of rock rods tech its trailing arm suspension explained by jake burkey. Using high quality american material in our kit enables utilization of the stock swingarm to accept this conversion. Bearings have been replaced with brass oil lite bushings that are impregnated with oil to keep weight and cost down while still allowing the arm to pivot smoothly.
Thoughts on swingarm,lowering, tuning, full exhaust. On the printout is information such as rake, trail, swingarm angle, and. Youll find all of the racing motorcycle parts you need to give your racing bike the edge at adams performance. Suspended dragster rear clips race tech race cars and. Even the swing arm construction was different in that it offered six pivot point locations for suspension tuning rather than a single point as in a ladder bar style setup. Mountain bike rear suspension may appear to come in a baffling array of different designs.
This is known as a swing axle configuration, and at the time was common to mercedes benz, porsche and volkswagen. Floater brakes, floating shock, full gearing and rear derailleur modeling, all wheel sizes supported. Why is the swingarm design uncommon rare on full suspension. These details better locate the exact frame mount for the a arms andor struts, and will calculate anti dive a suspension tuning parameter. Sometimes they had to have new bearings put in, sometimes they had to be shaved, sometimes shimmed. This was a revolutionary invention in the automotive industry, allowing wheels to react to irregularities of road surfaces independently, and enable the vehicle to maintain a strong road holding.
The cookie settings on this website are set to allow all cookies to give you the very best experience. New plus version lets you add many types of rear suspensions for handling analysis. Nov 14, 2011 the dirt track swing arm suspension, is it dead. Short track thunder view topic modified rear suspension. Jan 04, 2020 i love the lqqk and ride of my turbo busa. That is, the end links should swing freely onto the sway bar so there is no load on the bar while the suspension is in its neutral position. Its a 00 fritz, 235 swing arm, 565 rehermorrison, 1. This could be the chassis hitting the ground, a control arm hitting a wheel or a control arm being stretched to the point it would break.
Front suspension analysis simulation software program. Suspension tuning is a critical part of getting the ultimate performance package, it is even possible to have a more competitive car then a rival with superior upgrades by having a well balanced set up, which maximises the available grip levels. Tuning 4 link rear suspensions can make a car launch quicker and use less horsepower to do it. Suspension tuning tips for type 1 swingaxle beetles, irs beetles and buggies street and autox my name is greg ward, i am a guest writer for aircooled. What is the difference between swing arm and trailing arm. Adams performance chromoly swingarm kawasaki zx14 0617. Now you can update your older hard tail or slip joint dragster with the same suspension that we use in our swing arm mono shock and xlink dual shock dragsters. The software used in this work is solidworks version 2014. A beginners guide to mountain bike suspension design.
For example, rear suspension linkages can be designed to obtain the desired. Hey guys, i need some info opinions on nascar style truck arm rear suspenions. Dirt bike swingarm maintenance 1 some owners manuals suggest inspection andor service of the linkage and swing arm bearings after every 7. You can now optionally enter more details about the front suspension layout for double a arm and mcphearson strut suspensions. Kawasaki zx14 extended custom swingarms schnitz racing. You need at least 45% of the cars weight on the rear wheels to make a 4 link suspension work properly. Click on blue link for a pic of these front suspension layout details. Figure 9 19 pope motorcycle with plunger system setup on the rear axle red. Dave adjusts the chain tension on a single sided swingarm with top bracing. The stand is not suitable for blue yeti usb microphone. Jake will be teaching you all that there is to know about trailing arms and why you need trailing arms off. The current swing arm is being manufactured by welding different structures together. The motion pro deluxe suspension bearing service tool is the perfect tool for rebuilding your shock bearings, linkage bearings, and even swing arm bearings. Dirt late model suspension setting up our dlm project car.
Understanding what type of rear suspension, and how to adjust the suspension to dial in the amount of rear steering for different track conditions is the final part of rearend suspension tuning. Figure 15 schemes of rear suspension with swing arm and fourbar linkage. Second, the travel path of a single pivot swing arm carries the wheel forward as it moves through its travel path, because of the arc described by the wheel. Can be lowered to 1 tire to fender clearance for looks,up a bit for just me and a comfy ride,up a bit more for carrying a passenger. A swing arm, or swinging arm uk, originally known as a swing fork or pivoted fork, is the main component of the rear suspension of most modern motorcycles and atvs. As such, it appears on your registry and it is accessed via the start menu. All this i plan on incorporating into a tubular frame that will be for an 86 monte carlo ss. Swingarm length is typically measured from the swingarm pivot axis to the rear axle. I crew on a doorslammer your pro mod in competition eliminator down in oz and we want to convert it from a ladder bar to 4 link in the off season and we are going to use the current sheet metal rear housing with some mods.
Getting the perfect setup as motorcycles get more and more complex, its easy to think that the science behind the suspension on your bike is almost too much to understand. Follow along as we set up the suspension in our dirt late model project car including the front, rear, and driveline geometry as well as the spring setup in preparation for our first shakedown. Swingarms highperformance motorcycle parts, engines, tuning. Lower speeds andor lighter weight need softer suspension settings to. Andrewt march 06, 2014 outside of having your suspension tuned and setup by a professional, you can fine tune your dirt bike.
Atv swingarms that are manufactured for riders pushing the offroading envelope are cnc machined to exacting standards. Even the old stand by like the gs1100 swing arm was not a direct fit. Nov 04, 20 horst link four bar suspension is a fully independent design which features a chainstay pivot located in front of the rear wheel dropout the horst link, a pivot just behind the bottom bracket, and one at the top of the seat stay which is connected to a leveraged shock linkage. Motorcycle rear suspension worcester polytechnic institute. A swing axle is a simple type of independent rear wheel suspension designed and patented by edmund rumpler in 1903.
That way you get better frame geometry and suspension. A steering arm in the swingarm, called steering arm out in the picture, because is where the roll control acts through the mechanism. I am planning on building my own setup buy buying the parts from. Neewer nw35 metal suspension boom scissor arm stand with builtin xlr cable, shock mount and table mounting clamp ideal for radio broadcasting studio, voiceover sound studio, stages, and tv stations, etc. Discussion in tech questions started by slk, may 21, 2010. Our main priority is providing a full spectrum of suspension service for motocross riders across the country. High caliber swingarms for a difference youll notice immediately. Dirt late model suspension setting up our dlm project. I figured i would share a neat trick to balance single sided rear wheels. Its important to start at the basics, so lets do that by breaking suspension.
It is used to hold the rear axle firmly, while pivoting vertically, to allow the suspension to absorb bumps in the road. I bought a inexpensive motorcycle static wheel balancer from harbor freight. I plan on buying the monoball arms along w their crossmember. Being able to identify a loose or tight condition is the first step in using rear steer to help performance. As a 35 year veteran motorcycle rider and owner of 15 different bikes during that time, while i dont dispute the unsprung weight argument made by ducatikiller, i can tell you that there is a much, much, much more practical reason for using a single sided swing arm. If ever you see the explosion it means that a clash or breakage would occur. Swing arm length calculation has been added to the front suspension screen. Ease of adjustment, since there is only one shock absorber. Both versions of the software provide the same features.
Chassis and suspension 4link swingarm dragster burnout my buddy finally got to run his dragster for the first time and i have a question. Analysis and topological optimization of motorcycle swingarm. Home rear suspension drag racing drag race 4link kits. Advanced suspension setup explained immediate media. With few moving parts, the maintenance required is the lowest of all suspension designs. Instead of a radius arm with a fixed mount on the axle, it uses an upper and lower link on each side with pivots on both ends. Swingarm length reference motospec chassis program. The s w laser link features the optimum in tuning adjustments, 144 possible instant centers. Jan 04, 2020 if you like the look of a lowered busa with extended swing arm and cornering isnt a big deal, go for it id go the opposite if i wanted a change in bike geometry. Design, analysis of atype front lower suspension arm in.
But this was not just any pro stock truck, but an unusual don ness racecraft built bodychassis with a swing arm rear suspension, instead of the conventional four link. B mod chassis guide for fans and newbies rear suspension. Adjust single sided swingarm chain dave moss tuning. V4 models with adjustable swingarm pivots, the eccentric adjustment.
Options are added to your arm during production at an additional charge. Yet knowing how your suspension works and what effect the various adjustments have will help you get the best out of your riding. Kit comes with two bushing assemblies, spacers, plastic retainer rings, rubber isolators, one pivot shaft with locknuts, washer, and sleeve, and plastic dust shields. Susprog3d suspension by design is a complete software package enabling the design. The rear suspension, antisquat and attitude calculations will still apply. A variation on the radius arm suspension is the parallel fourlink, shown in the figure above. This worked for my vfr and will probably for other single sided swignarm bikes like triumph, bmw.
Minimumum wheelbase, big rear sprocket, raise the tail with a tall tire or raising links. The most general rule of thumb is that they are a very forgiving type of suspension. Check out a guide to motocross suspension tuning for more information on getting the right dirt bike suspension setup for your ride. At tfx suspension we often have people emailing in asking for some advice on how to set up their motorcycle suspension correctly, so we have created this guide to help explain.
Jp speed is a motorsport shop located in holly michigan. Types of suspensions by jacob isaaclowry aug 22, 2004, 23. We have used the software lms virtual lab to model and make the simulations. The ultimate guide to mountain bike rear suspension systems. I received an email several weeks ago from a faithful reader regarding what some of the basic principles around a dirt track swing arm suspension. A swingarm, or swinging arm uk, originally known as a swing fork or pivoted fork, is the main component of the rear suspension of most modern motorcycles and atvs. Please click accept cookies to continue to use the site. Jdk motorcycle wreckers, australias largest specialist dirt bike wreckers. I feel like a dude trying to diagnose his own medical condition who is way off. Every swingarm is designed for use with stock components and includes a built in air tank, bottle mount bracket, chain guard and brake stay bracket.
You can order our rear clip to fit any brand of chassis. Were ready to help you fulfill your need for speed. Which makes you faster, so you win, get famous, and live happy ever after so, lets get into it and find out how to do it note. Hence, it is reported that the structural integrity of the suspension arm is crucial from design point of view both in static and. The full installation zipped folder is a zipped folder, which has to be unzipped and installed. Jp speed s custom suspension revalving division will work with you to develop a suspension setup you will be confident to race hard with. Net, and i have a 69 std beetle with irs rear that i run in the hillclimb circuits in australia. The leader in suspension support for chinese mini atvs and performance parts 50cc 70cc 90cc 110cc. Front suspension set up ive messed with its settings as much as the rear right now i have hyperpro on front, showa on rear.