There are two options for clutch optimization a a scientific method, or b a not so scientific. Ncvtnac in india, which is to help an individual to master skills to do a job. Aaen performance, carb tuning handbook, atv, snowmobile. In this article we will brush up on the workings of a basic clutch system and the process by which you tune it.
Peak rpm the rpm the machine sits and holds most of the time at wot. Cvt transmission tuning and performance get the book here. Here are some general clutching rules you should play by. This is a tuning variable not previously available to the tuner or cvt manufacturer. Check out these driving stick tips designed to help you understand how to get the most out of your manual transmission car. Cd follow installation, maintenance and calibration manuel to disassemble driver pulley. Producing quality computer tools for racers and engine builders since 1986. The mtc multistage can be run as a single stage lockup.
True cvt clutching theory indicates that the main purpose of the secondary driven clutch is to provide just enough belt tension to prevent. In fact, some people will tell you its simply a black art that takes years to understand. The shop that is putting my car together is going to put the brand new clutch in and take it. If you want to know how your clutch works, this book will save you valuable time and money. Buy aaen clutch tuning handbook updated new 2009 b16003. Our popular clutch tuning handbook has been revised for the ninth time, bringing you the latest in clutching technology. This handy book gives you the straight scoop on setting up your clutches for maximum performance. Clutch principles law a body of law and concepts which have been established by olav aaen which is the framework of modern cvt systems. Read, highlight, and take notes, across web, tablet, and phone. The clutch takes the engine power, and puts this down through the drive shaft, to the driven wheels on the road but allows you to disengage the engine whilst performing a gear change. Engine parts, swingarms, nitrous, turbo kits, chain, sprockets, air shifters, exhaust kits and much more. Clutching part 1cvt clutching theory polaris rzr forum.
This needs to be in your models peak powerband for best results. As an engineer i always look for evidence that supports a complete theory of clutching. Clutch tuning the best advise is just to call tom in the morning, he is really knowledgeable. Special chapters on clutch theory, testing and flywheel grinding. Everyday low prices and free delivery on eligible orders. Some racers tend to forget that the clutch is a vital component of a carstruck setup. Secondary clutch driven clutch rear clutch connected to drivetrain. Clutches free delivery possible on eligible purchases. As we all know, clutching is a very complicated subject. With a stock motor you should not need a lock up clutch to keep the clutch from slipping on the big end. Clutch tuning handbook has been revised for the ninth time, bringing you the.
Cvt, if that was his name, invented a marvelously simple and effective way of transmitting power to the ground without the need for manual shifting, manual. This book, continuously variable transmission systems cvt of which theres also a companion dvd by the same title, was a long time in the making. Various transmissions were purchased with the specific task of disassembling then to gather the needed resources photos, diagrams, etc to develop this cvt series. Dalton pro clutch components are marketed in north america and world wide by dealers and distributors.
Drive clutch tuning this is mainly for all the 825 guys complaining about the engine rpms when driving around at moderate to slow speeds. Diaphragm clutch assembly, constant mesh gear box, synchromesh gear box, gear linkages. Understanding the fundamentals i have made mention a number of times to a book by olav aaen entitled clutch tuning handbook currently updated 2009. A clutch is fully engaged when the motor rpm equals the clutch bell rpm. Besides, act clutch systems are designed to work with stock and quality aftermarket flywheels. The hays clutch is flat out awesome when it is tuned correctly. Until then, you could remove the belt and push your clutch in by hand to see if it travels far enough to squeeze the belt to the desired height. Schnitz racing has all the motorcycle performance parts you need to stay in front.
Dalton industries manufactures a wide range of cvt tuning components for snowmobile as well as complete clutch kits for selected atv models applications. Engineered clutches for competition we have been manufacturing special clutches for some time for oe applications and race series around the world. Power output rises with rpm to the limits that clutch tuning is significant. How to overcome the clutch pedal, for those of you who have vehicles, especially car vehicles, you must have experienced a clutch problem in your car. Then all engine rpm tuning should be done with the spring and weights in the primary.
With the modern cvt, theres no worrying about a clutch, stalling the engine. Each of these components have a key role, modifying or tunin. Nitro motors under throttle will always rise in rpm as quickly and as much as they are able, given the current load. Cvt clutch tuning basics part 2 understanding the fundamentals. How to overcome the clutch car clutch weight and hard. Choose your spring by part number or rate in the drop down when adding your cart. Special chapters on clutch theory, testing and flyweight machining. Take your old primary off and replace it with the cv tech clutch for improved performance, a longer belt life. Cpc clutch tuning handbook cutlers performance center. Your engine rpm range signifies that you are trying to tune your cvt for baja sae competition. The drive clutch, the one attached to the engine is centrifually actuated.
Although it seems intimidating at first, theres nothing behind the combination of clutch, shifter and gas pedal that you cant master with just a little practice. Premoving gear box and clutch i and multiple plate clutches as square, and energy and power. Replaces or repairs defective parts of gear box, rear axle, steering mechanism etc. Often overlooked is a very important and useful tuning option on a car, the clutch.
Brand new clutch getting dyno tune just picked up a brand new act sprung 6 puck. The more power you have the harder it is for the clutch to operate. High performance tuning tips for your cvt clutch dirt. Of the two clutches in the gators drive system its the only one that is controlled by rpm. Record book daily diary answer sheet of assessment. Primary clutch drive clutch front clutch off the motor.
A clutch offers a variety of tuning options for different circumstances, but like the rest of the car it requires good maintenance to perform at its best. Varactor variable capacitance diode or tuning diode. After a bit of a base for tuning our clutch now were making the power we want. The heelx roller secondary system is available for arctic cat and yamaha openroller secondary clutches, including the acrtic cat bearcat. Professional drag racing clutch services cale aronson. We have the lowest prices on snorkel kits, atvutv axles, atv lift kits, wheels, tires, exhaust systems and. When fine tuning 18 buggies and trucks, most drivers begin with shock oils, camber, toe, tires, and so on. Heel x tech article a kit for roller secondary clutches.
Their testimony is more than likely to be true based on hisher experience, knowledge, training and appearance of honesty and. The trade theory book provides related theoretical knowledge required to enable the trainee to do a job. Theyre simple, driverinvolved, maintenance friendly, and fun. If you want to know how your clutch works, this book will save you valuable ti. I am currently working with the local kart track in creating a usable clutch rule in regards to the lo206 classes. Act clutch kits, flywheels, performance transmission. If your confused about how your clutch works, this book will save you valuable time and money. Automotive continuously variable transmissions cvt. We offer the following inhouse clutch services resurfacing flywheels, pressure rings, floaters and any mating surfaces. The vocabulary base for the content has been built on corpora samples of real world in tune with. In my opinion, the ideal way to approach clutching is to start with a straight angle helix, with the angle selected for backshifting characteristics, and the secondary spring tension as loose as possible while still preventing belt slippage. This popular clutch tuning handbook has now been rewritten and updated for the third time.
This is the first thing we change on all of our shop bikes. Modeling of a continuously variable transmission and clutching of. Cvt clutch tuning basics part 3 making the adjustments. This handbook provides clutch theory and practical application for the racer and trail rider. Nitro motors produce very little if any usable power at idle and low rpm levels. Installation, maintenance and calibration manual powerbloc cvtechaab 3037, frontenac blvd e. Contact like this requires a lot of grip and a fast response. Our small multiplate clutches have been engineered to exceed the performance levels required in their class without compromise. Clutch dyno we can dyno your clutch assembly and provide you with a pressure applied rating per rpm, as well as suggest additional changes that could help with tuning. This is a direct bolton system with no machining or external modifications to the secondary clutch. Act clutch kits are unparalleled in terms of consistent, precise pedal feel, high torque capacity, durability, and long wear life. Buy olav aaens clutch tuning handbook updated 99 by aaen, olav isbn. For the hays clutch you have to send him the clutch basket and the hub. Get more snap nitro engine clutch tuning for buggy.
Their testimony is more than likely to be true based on hisher experience, knowledge, training and appearance of. Join our mailing list for special offers email address. Aaen performance clutch tuning handbook bvs16003 royal. C program files stc ilqa 0666 root images headerlogo.
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