DOCSLIB.ORG

Competitive Cycling 2O21 03 Introduction

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Competitive Cycling 2O21 03 Introduction ENDUOTM EVOLVE COMPETITIVE CYCLING 2O21 03 INTRODUCTION 05 THE ISSUE WITH CURRENT DRIVETRAIN SOLUTIONS 10 INTRODUCING THE ENDUO™ EVOLVE 16 WORK WITH US 17 METHODOLOGY & APPENDIX 18 GLOSSARY OF TERMS CONTENTS 02 01 OUTLINE IMPORTANCE OF FOCUS ON SHIFT TO NEW THE SAME MARGINAL GAINS AERODYNAMICS DRIVETRAINS MATERIALS FUNDAMENTAL TECHNOLOGIES In competitive cycling, Traditionally, cycling teams Recently, there has Despite aluminium Competitive cycling is still where a place on the (especially track cycling been a shift in focus components being flooded with bikes using podium is decided by teams) have primarily from aero to drivetrains, commonplace and effective the same fundamental milliseconds, it is never focused on aerodynamics where manufacturers are in cycling applications, roller chain and sprocket been so apparent that – increasing efficiency increasingly expanding carbon fibre is considered design that was invented marginal gains play a through minimising losses the size of chainrings superior for the stiffness, in 1880 by Hans Renold, considerable role in the caused by wind drag. and sprockets in order weight-saving and aesthetic and has remained largely creation of champions. to increase power benefits that it brings. unchanged ever since. With transparent data, transmission efficiency This is evidenced clearly wind tunnels and high-end from the rider to the bike. It is no longer rare for This limits the efficiency, by Team GB and Team testing facilities, we are cyclists to use carbon fibre lifetime, and material Sky (now Ineos) dominating now learning more than But there’s a limit to how chainrings, although the potential of current cycling under Dave Brailsford ever about aerodynamic much you can increase proposed performance drivetrains on the market. following an increased performance. the size of a component benefits these bring are focus on marginal gains. before it starts to have a controversial within the detrimental impact on the cycling community. aerodynamics and overall weight of the bike. INTRODUCTION 03 “ INNOVATION HAS BEEN SWIFT AND DRAMATIC OVER THE YEARS, BUT THE ONE THING THAT NEVER SEEMED TO CHANGE WAS THE CHAIN AND DRIVETRAIN COMPONENTS. Marc O’Brien Spellman Dublin Port INTRODUCTION 04 ENERGY LOSSES Take away: there are three primary 02 frictional loss interfaces. In a chain-drive bicycle drivetrain, there THE ISSUE WITH are multiple sources of energy loss, including damping and striking energy. But the most significant source of loss is that of friction, which occurs at five CURRENT DRIVETRAIN key contact interfaces in the drivetrain. SOLUTIONS Bush–roller HOW DRIVETRAINS WORK “ Roller–tooth Link plate–sprocket Every single watt of Every competitive track and road bicycle power is transmitted drivetrain uses a fundamentally identical through the drivetrain, so even a small method to transfer power from the pedals percentage to the wheel: a roller chain wrapped of improvement can around a sprocket and chainring. In result in significant almost every case, the tooth design reductions of loss and therefore increases in of different sprockets and chainrings performance.” are indistinguishable, and yet there are – significant drivetrain losses associated Dan Bigham Pin–bush with existing tooth designs. Wattshop / HUUB Wattbike Link plate–link plate THE ISSUE WITH CURRENT DRIVETRAIN SOLUTIONS 05 In well-aligned, single-speed drivetrains, “ LIMITATION I: RELATIVE MOVEMENT the frictional losses associated with the Aside from performance, those lost watts are To enable engagement and link plates can be neglected, meaning actually wearing disengagement from the sprocket, that the primary loss mechanisms of away your drivetrain the roller is made smaller than the interest are pin-bush, bush-roller and components, decreasing product life and gulley in which it sits, allowing the roller-tooth losses. therefore increasing the roller to rotate, push and pull on cost of your drivetrain the side of the sprocket tooth. The pie chart below shows the system.” contribution of each of these interfaces – Dan Bigham (Wattshop / Unfortunately, this difference in diameter to the total frictional losses in the HUUB Wattbike causes additional movement between drivetrain. the roller and the tooth through the sprocket rotation, the net effect of which is to incur unnecessary losses at this interface, decreasing the lifetime and Contribution of interfaces to total frictional losses performance of the drivetrain. Pin-bush Bush-roller 72% 21% Roller- sprocket 7% THE ISSUE WITH CURRENT DRIVETRAIN SOLUTIONS 06 LIMITATION II: HIGHLY LOADED The load on the bush-roller interface ” ARTICULATIONS depends on the contact force applied In a sport where one second is a lifetime and on the roller by the tooth, while that on Frictional losses originate wherever 10 watts is 1st or last, the pin-bush interface arises from the any improvements are surfaces slide against one another under combination of the chain tension applied welcomed with open a contact load. In the standard roller arms.” and the roller-tooth contact force. The chain setup, these losses occur primarily – shape of the tooth is very important in the tense side of the chain where Marc O’Brien in governing the force at the sliding Spellman Dublin Port the chain is wrapping or unwrapping interfaces, and therefore the frictional around the sprocket or chainring, losses in the system. known as chain articulation. The chain articulation causes significant sliding between the pins, bushes and rollers as the bodies are forced to rotate relative to one another through the articulation. The input power from the rider simultaneously applies a very high tension to the chain, which causes the sliding to occur under very high contact loads. Articulation link THE ISSUE WITH CURRENT DRIVETRAIN SOLUTIONS 07 ROLLER CHAIN Energy loss ARTICULATION TYPE Inner link Comparing these two types of When considering the source of articulation, it can be found that more the articulation losses, in particular energy is lost in a bush articulation the pin-bush and bush-roller losses than in a pin articulation because of previously shown, a distinction must the larger number of interfaces that be made between the different types slide during the bush articulation. of articulation: pin articulations and bush articulations. These different These articulation types alternate with articulation types are a result of the every articulation of the chain because two types of link – the inner (narrower) of the alternating inner and outer links link and outer (wider) link. in the chain’s construction. This means that it is almost impossible to completely Pin articulation eliminate either articulation type. The outer links articulate via what are known as pin articulations. In this case, Outer link the inner link remains stationary relative to the sprocket, while the outer link rotates about. This rotation of the outer link, and corresponding pin, causes sliding between the pin and the static bush, inducing a loss at this interface. LOST WATTS Well-documented physical Bush articulation testing research shows that roller The inner links articulate via bush chain drive efficiency reaches articulations, where it is the outer link values of up to 98%, dependent that does not move relative to the on the conditions applied to the sprocket, while the inner link rotates. drivetrain. This equates to 20 The effect of this is that there is sliding watts loss at an input power on the inner surface of the bush between of 1000W. the bush and static pin, as well as on the outer surface of the bush between the bush and static roller. THE ISSUE WITH CURRENT DRIVETRAIN SOLUTIONS 08 WHY SPROCKETS MATTER For this reason, the best approach to THE ONLY CURRENT SOLUTION: reduce drivetrain losses is undoubtedly LUBRICATION AND SURFACE Within track cycling, a common trend to focus on reducing losses at the TREATMENT is to focus on reducing the losses rear sprocket in combination with associated with the chainring, with Outside of a design change, the only the chainring to offer the greatest less of a focus on the sprocket. thing cyclists can currently do to combat possible increase in efficiency the implications of relative movement, over the entire drivetrain. However, only 20% of drivetrain losses high loads and unnecessary friction, is to actually occur at the chainring, compared mitigate the sliding friction by applying to the 80% lost at the sprocket. This lubrication and other treatments to is because the articulation angles of component surfaces. the chain when wrapping around the sprocket are so much larger than those Despite there being a wide range of at the chainring. lubricants on the market, the differences in relative performance are unclear and they have a very limited capacity to improve a drivetrain’s efficiency before other factors play a more significant role. Comparison of sprocket and chainring energy losses Sprocket Pin-bush Bush-roller Chainring Roller-tooth 0 10 20 30 40 50 60 70 80 Articulation loss (%) THE ISSUE WITH CURRENT DRIVETRAIN SOLUTIONS 09 INTRODUCING THE The Enduo™ Evolve is a revolutionary conventional drivetrains, increasing Up to new sprocket design developed overall efficiency and lifetime of the Watch the exclusively by New Motion Labs. chain, chainrings and sprockets. explainer video 30% increase in drive lifetime By enabling the roller chain to securely The Evolve benefits competitive cyclists engage on both sides of the sprocket across all events. By minimising the tooth – otherwise known as Dual amount of energy lost through the Up to Engagement – the Enduo™ Evolve offers drivetrain, athletes are able to transfer many advantages over conventional more power and race even faster. 1% technologies, including increased higher efficiency drivetrain efficiency, longer lifetime and less friction. LESS This design drastically reduces the frictional losses witnessed on WEIGHT ENDUO EVOLVE 10 BENEFIT I However, unlike conventional roller chain BENEFIT II PREVENTING RELATIVE MOVEMENT chainrings/sprockets, the roller on the REDUCING ARTICULATION LOSSES other side of the tooth is a supporting In the roller pairs which engage each Standard roller-chain sprockets are roller.
Load more

Recommended publications
  • Owner's Manual
    IBD-Mountain EN 07-01-19 m0520 © Batch Bicycles Ltd 2019 PLEASE VISIT YOUR AUTHORIZED BATCH RETAILER FOR SERVICE AND QUESTIONS. Batch Bicycles 8889 Gander Creek Dr. Dayton, OH 45342 833.789.8899 batchbicycles.com OWNER’S MANUAL for Mountain Bikes BATCH Limited Warranty We’ve Got You Covered damage, failure, or loss that is caused by improper Owner’s Manual Index Batch Bicycles comes with our industry’s best war- assembly, maintenance, adjustment, storage, or ranty program – Batch Bicycles Service Program. use of the product. This limited warranty does not Safety and Warnings ...........................................................................................2-5 Once your Batch Bicycle is registered, Batch extend to future performance. Bicycles provides each original retail purchaser of a Batch Bicycle a warranty against defects in materi- This Limited Warranty will be void if the prod- Assembly and Parts ..............................................................................................6-18 als and workmanship, as stated below: uct is ever: • Used in any competitive sport Brake System .............................................................................................................. 19-22 General: • Used for stunt riding, jumping, aerobatics or Warranty Part or model specifi cations are subject to change similar activity without notice. • Modifi ed in any way Shift System .................................................................................................................. 23-29 This Limited Warranty
    [Show full text]
  • Adjustments and Settings Electronic Groupsets
    ADJUSTMENTS 1 - ZERO SETTING of the rear derailleur IMPORTANT! Resetting the rear derailleur to zero is a particularly delicate operation and must be carried out when the bicycle is stationary and placed on a stand. This is why it should be conducted only and exclusively by a Campagnolo Service Center, a Campagnolo Pro-shop or a mechanic specialised in mounting EPS groupsets. 1.1 - HOW TO RESET THE REAR DERAILLEUR TO ZERO During the first installation and in some cases when the rear wheel is replaced, if the set of sprockets of the new wheel is very different from the set of sprockets previously installed, it is necessary to conduct a more accurate adjustment by resetting the rear derailleur to zero. • During the resetting, the rear derailleur is shifted con- Left control lever Right control lever tinuously and this depends on how long the levers 2 (B - Fig.1) and 3 (C - Fig.1) , located on the rear derailleur control, are pressed. The position can be changed by even just a hundredth. • All the operations described below must be conducted with the chain placed on the biggest chainring. C Press both MODE buttons on your EPS controls (for appro- mode mode ximately six seconds) until the blue LED turns on (Fig. 1). B Press lever 2 (B - Fig.1) or lever 3 (C - Fig.1) located on the A rear derailleur (Fig. 1). 1 Change the position of the rear derailleur by pressing lever 2 (B - Fig.1) to move up and/or lever 3 (C - Fig.1) to move down, until you centre the chain on the 2nd sprocket (Fig.
    [Show full text]
  • ASME/ANSI RS Roller Chain Technical Information
    U.S. TSUBAKI RS ROLLER CHAIN U.S. TSUBAKI ROLLER CHAIN — A SOLID DIFFERENCE ASME/ANSI RS Roller Chain A - DRIVE CHAINS RS ROLLER CHAIN RS11 ˜ RS240 Longer Wear Life Higher Horsepower Ratings Greater Fatigue Strength U.S. Tsubaki Roller Chain lasts up to U.S. Tsubaki ASME/ANSI Chains handle U.S. Tsubaki ASME/ANSI Chains are twice as long as our previous chain in up to 33 percent more horsepower so you designed to have higher fatigue strength. many applications. Advanced technology can increase drive performance without The wider waist of the link plates puts allows us to combine the strength, increasing chain size. In fact, depending more metal where you need it — running durability, and reliability of a solid bushing on your application, you may be able to your application. There is less downtime with our patented lube groove on the transmit the same horsepower with a because chains operate longer. Operating inner surface of sizes RS80 through smaller, less costly chain. The costs are reduced because chains RS140. The solid bushings are precise improvement comes from a U.S. Tsubaki perform more efficiently. These benefits round cylinders, which means better exclusive ring coining process for the slip go right to your bottom line. contact between the pin and bushing. The fit connecting link and special processing lube grooves hold oil where chain needs on the two-pitch offset link. S-N Curve it most. The result is longer lasting chain. Horsepower Ratings Wear Elongation Curve A & a: Fatigue strength B & b: Tensile strength Improved Tsubaki B Chain b Competitor A Competitor B Previous Improved Previous Tsubaki Tsubaki Tsubaki Improved Tsubaki Chain Chain Chain Chain 1.5 33% Increase in Horespower Rating 1.0 RS80-RS140 Other roller chain A .05 "S" Chain load a HP HP 2 3 4 5 6 7 Elongation (%) * Ratings are for RS80-RS240 Roller Chains 1 10 10 0 50 100 150 200 Revs Per Minute (RPM) 10 10 10 10 10 Time (Hours) "N" Number of times load is applied Save Time & Money Wear in the pin-bushing joint can lead to elongation and replacement.
    [Show full text]
  • Chapter 1 Introduction
    國立交通大學 機械工程研究所 碩士論文 變速自行車鏈條設計 Design of Chains on Multi-speed Bicycles 研究生：張崇銘 指導教授：曾錦煥 教授 中華民國九十三年六月 變速自行車鏈條設計 Design of Chains on Multi-speed Bicycles 研究生：張崇銘 Student: Chung-Ming Chang 指導教授：曾錦煥 Advisor: Ching-Huan Tseng 國立交通大學 機械工程研究所 碩士論文 A Thesis Submitted to Institute of Mechanical Engineering College of Engineering National Chiao Tung University in Partial Fulfillment of the Requirements for the Degree of Master of Science in Mechanical Engineering June 2004 Hsinchu, Taiwan, Republic of china 中華民國九十三年六月 變速自行車鏈條設計 研究生：張崇銘 指導教授：曾錦煥 國立交通大學機械工程研究所 摘要 本論文主要研究對象為自行車上傳動系統中的鏈條元件，由於自行車飛 輪受到車架、騎乘姿勢所形成的空間限制，必須在有限空間內增加飛輪片 數增加齒數比，達到變速換檔的舒適性。因此，為了配合這樣緊密的飛輪， 鏈條寬度的縮減是必須的。經過專利的整理後，確定空間尺寸和強度為初 步設計的主要需求；提出不同的概念設計，並利用新的鏈條連結機構來達 到鏈條寬度的縮減。 本文提出概念設計較目前市面上自行車最窄的鏈條寬度更窄，強度部份 利用有限元素分析法做定性分析，比較各個設計的相對強度；此外也經由 原型的製作，檢視其機構的問題。 i Design of Chain on Multi-speed Bicycle Student: Chung-Ming Chang Advisor: Ching-Huan Tseng Institute of Mechanical Engineering National Chiao Tung University ABSTRACT This study focuses on the chain for the multi-speed bicycle. Design space for the freewheel on bicycle is limited by frame, riding posture, etc. However, the number of gear ratios in this design space increased with added more sprockets are the trend on the bicycles. Therefore, reduction of chain width is necessary for working with this compact freewheel. Space and strength are main requirements in the beginning of design according to literatures and patents review. Several new concepts are proposed, and these concepts use the linkage mechanism to achieve the reduction of chain width. Chain width of these concepts proposed in this study can be reduced under the assumption for fixed design space and thickness of sprockets. The finite element method is used to compare the trend of strength among these concepts.
    [Show full text]
  • Technical Engineering Guide
    TTEECHCHNINICALCAL EN ENGGINEEINEERRININGG 89 www.diamondchain.com TECHNICAL ENGINEERING General Drive Considerations One of the main advantages of the roller chain drive is its ability to perform well under widely varying conditions. Despite this ability, there are a number of rules of good design practice which, if considered early in the design pro- cess, will enable the user to obtain desirable results. Basic dimensions and minimum ultimate tensile requirements for single-pitch, double-pitch and attachment roller chains are specified by various standards organizations worldwide. ASME/ANSI, The American Society of Mechanical Engineers and The American National Standards Institute, defines dimensions such as: pitch, roller width, roller diameter, link plate height, link plate thickness and pin diameter. The primary purpose of the standard is to ensure that manufacturers will produce chains and sub-assemblies that are similar dimensionally and therefore interchangeable. In addition, the standard does offer the user some assurance of quality by defining a minimum ultimate tensile strength for each model of chain. However, tensile strength is not always a valid method to differentiate one manufacturer’s product from another. It is very important to remember that dimensional standardization does not define quality or performance characteristics. Minimum Ultimate Tensile Strength: Minimum Ultimate Tensile Strength, MUTS, is the static load required to break the chain. Tensile strength values shown in this catalog are not allowable working loads. Load or tension applied 1 to the chain in service should never exceed ⁄6 th of the UTS. If exceeding this value is necessary for a specific applica- tion, contact Diamond Chain.
    [Show full text]
  • Gear Up! Reviews: Ortlieb Vario & Carradice Backpack Panniers
    WS E VI E R Bikes • Accessories • Kit Submit a review If you want to submit a review, write or email the editor – details on page 88 – Gear up! for advice on how to go about it. Each one printed wins a boxed set of three A cross-section of cycling products selected Cassini historical maps of the area of your choice. To see the whole range, and reviewed by CTC staff, specialist visit www.cassinimaps.com. To order by journalists and CTC members phone, call 0845 458 9910. BACKPACK PANNIERS £50 & £110 Reviewed by Technical Editor Chris Juden The Ortlieb Vario (near right) and Carradice Carradry Rucksack Pannier (far right) are the latest answers to a need that’s as old as the bicycle pannier. We all know that wheels make things easier to move, but normal panniers are awkward things to carry off the bike, which is one reason so many people pedal under the burden of a rucksack these days. That may be bearable for small amounts of luggage or distance, but not if you have lots to carry and it's more than a couple of miles to work or the shops. As for holidays: of course you’ll not want anything to detract from the pleasure of cycling – but if you also want to do a bit of serious hiking, on your back the load must go! Local errands and the bike-hike mix have similar but not two external sleeves (e.g. for bike bottles) and an internal identical demands, which play to the different strengths document pocket.
    [Show full text]
  • WT Series Actuator Operations Manual WATCH TECHNOLOGIES W T S E R I E S Actuator Operations Manual
    Water Control Devices WT Series Actuator Operations Manual WATCH TECHNOLOGIES W T S E R I E S Actuator Operations Manual Watch Technologies 2185 NE Spalding Ave, #10 Grants Pass, OR 97526 Phone 541.472.8095 06/2016 Contents Introduction ………………………………………………............ 1 Theory of Operation ………………………………………. 1 Installation and Start-up ………………………………………… 3 Safety Information ………………………………………… 3 Installation – Rising Stem ………………………………… 4 Installation – Horizontal Gearlift …………………………. 12 Seasonal Start-Up ………………………………………………. 16 Operation ………………………………………………………… 18 Manual Operation ………………………………………… 19 Automated Operation Using Internal RTU ……………… 20 Handwheel Operation …………………………………….. 20 Maintenance and Troubleshooting ……………………………. 21 Troubleshooting Guide …………………………………… 22 Shut-Down and Storage ………………………………………... 23 System Integration and Options ………………………………. 24 Electrical System …………………………………………. 24 Gate Blade Position Sensor ………………………………25 Solar Panel and Charge Controller ……………………... 27 RUG3 Remote Terminal Unit ……………………………. 28 WT Actuator and Gearmotor Specifications ……………29 – 39 Warranty Information …………………………………………… 41 WATER CONTROL DEVICE S Introduction The WT Series of gate control actuators from Watch Technologies have been developed for the ultimate control of a wide variety of applications. he WT Series consists of five distinct models to address the needs of both vertical rising stem gate users as well as systems utilizing T horizontal shaft gear lifts. A wide variety of drive motors enable the WT Series to align with specific torque requirements. The WT Series can also be configured with an embedded Remote Terminal Unit (RTU) which enables the actuator to function as a stand-alone, smart device that can remotely control gates based upon user-defined control points and water status parameters (flow, level). Theory of Operation The philosophy behind each Watch Technologies product is providing long- lived, reliable devices that can be easily installed, maintained, adjusted and upgraded by our customers using simple tools and basic skills.
    [Show full text]
  • Rear Derailleur
    (English) DM-RD0004-08 Dealer's Manual ROAD MTB Trekking City Touring/ URBAN SPORT E-BIKE Comfort Bike Rear Derailleur XTR RD-M9000 DEORE XT RD-M8000 CONTENTS IMPORTANT NOTICE .............................................................................................3 TO ENSURE SAFETY ...............................................................................................4 LIST OF TOOLS TO BE USED ..................................................................................6 INSTALLATION .......................................................................................................8 Installation of the rear derailleur ................................................................................................................8 ADJUSTMENT ......................................................................................................11 Stroke adjustment ......................................................................................................................................11 Installation of the chain .............................................................................................................................12 Securing the cable ......................................................................................................................................13 Using the end adjust bolt ..........................................................................................................................17 SIS adjustment ............................................................................................................................................18
    [Show full text]
  • Review on Design Optimization of Sprocket Wheel Using Different Techniques
    International Journal of Advanced Mechanical Engineering. ISSN 2250-3234 Volume 8, Number 1 (2018), pp. 55-62 © Research India Publications http://www.ripublication.com Review on Design Optimization of Sprocket Wheel Using Different Techniques Abhishek Barua 1 and Sasmita Kar 2 1,2 Department of Mechanical Engineering, Centre for Advanced Post Graduate Studies, BPUT, Rourkela, Odisha, 769004, India. E-mail: [email protected], [email protected] Abstract Sprockets are most widely used in automobile sector and in machinery. These are used in two wheelers and four wheelers such as bikes, cycles, cars and other mechanism either to transmit revolving motion between two shafts wherever gears are incompatible or to communicate undeviating motion to a pathway etc. They exist in various dimensions, teeth number and are made of different materials. Sometimes faulty chains quickly wear the sprocket. Possible causes of this problems are significant overload, breakage, high impact pressure, excessive chain wear far beyond replacement level, combination of worn chain with new sprockets etc. To ensure efficient power transmission chain sprocket should be properly designed and manufactured. There is a possibility of weight reduction in chain drive sprocket. In this paper, a study of design optimization of sprocket using different processes and techniques is studied. This paper reviews the designing of chain sprocket, analysis using FEA and using the results from FEA how the optimization of sprocket for weight reduction has been done. Mostly researchers have used different grades of steel as their base material and re-designed the sprocket by using different CAD software, few have used composite materials like Carbon Fiber or Nylon66GF30 also as an alternative to steel and compared to earlier research.
    [Show full text]
  • Roller Drive Chain Selection and Engineering Information
    sec_29.3_29.4_TI 11/19/08 12:45 PM Page 231 Roller Drive Chain Selection 29 Roller Drive Chain Selection and Engineering Information Required information for drive selection: Table 1: Service Factors 1. Type of input power (electric motor, internal combustion Type of Input Power engine, etc.). Internal Internal 2. Type of equipment to be driven. Class of Driven Combustion Combustion Electric Motor 3. Horsepower (HP) to be transmitted. Load Engine with Engine with or Turbine Information Technical Mechanical 4. Full load speed of the fastest running shaft (RPM). Hydraulic Drive Drive 5. Desired speed of the slow-running shaft. NOTE: If the speeds are variable, determine the horsepower to be Uniform 1 1 1.2 transmitted at each speed. Moderate 1.2 1.3 1.4 6. Diameters of the driver and driven shafts. Heavy 1.4 1.5 1.7 7. Center distance of the shafts. NOTE: If this distance is adjustable, determine the Step 3: Calculate the Design Horsepower. amount of adjustment. Design Horsepower = HP x Service Factor 8. Position of drive and space limitations (if any). 9. Conditions of the drive. Drives with more than two The design horsepower equals the horsepower to be sprockets, idlers, or unusual conditions such as severely transmitted times the service factor found in Table 1. abrasive or corrosive environments, severely high or low temperatures, widely fluctuating loads, frequent starts Step 4: Select the Chain Pitch. and stops, etc., require special attention. It is advisable From the Quick Selector Chart on page 234, make a to consult with Renold Jeffrey engineering personnel in tentative chain selection as follows: these situations.
    [Show full text]
  • Design and Modification of Bicycle by Using Additional Sprockets
    Vol-3 Issue-4 2017 IJARIIE-ISSN(O)-2395-4396 DESIGN AND MODIFICATION OF BICYCLE BY USING ADDITIONAL SPROCKETS Sanjeey Reddy K Hudgikar1 S.M.Saleemuddin2 1 Professor, Mechanical Department, Lingaraj Appa Engineering College,Bidar,Karnataka,India 2 Assistant Professor, Mechanical Department, Annamachara Institute of Technology & Sciences,Rajampet,Kadapa,AP. ABSTRACT Biking is increasingly being recognized as a highly sustainable form of transportation. The present work focus on design and development of bi-cycle which can be implemented as an alternative to the two wheelers consuming large amount of fuel and polluting the environment. To overcome these problems, an effort is being made to search some other for the vehicles. Again, it is also not affordable to purchase vehicles (mopeds, scooters or motorcycles) for all the class of society. Keeping this in mind, a search for some way to cater these economically poor people as well as to provide a solution for the environmental pollution was in progress. This work deals with these problems efficiently as energy is generated utilizing the mechanical energy of the rider. Keyword: - Sprockets, Welding, Gear Mechanism 1. INTRODUCTION A bicycle, often called a bike or cycle, is a human-powered, pedal-driven and single-track vehicle having two wheels attached to a frame, one behind the other. A bicycle rider is called a cyclist or bicyclist. Bicycles were introduced in the 19th century in Europe and as of 2003, more than 1 billion have been produced worldwide twice as many as the number of automobiles that have been produced. They are the principal means of transportation in many regions.
    [Show full text]
  • Rack Compatibility Chart
    RACK COMPATIBILITY CHART HEAVY-DUTY ALLOY FRONT RACKS VALE MIK REAR RACK 27.5" / 700C MIK 26" MIK 24" MIK LOFT ALLOY REAR RACK BLACK 551120 BLACK 592549 BLACK 599129 BLACK 592546 BLACK 1041068 BLACK 529986 MODEL FRAME WHEEL SIZE SILVER 551118 SILVER 592548 SILVER 599128 SILVER 592545 SILVER 1041067 SILVER 529985 WHITE 1041066 STEP-THRU 26" ׳ × TOWNIE GO! 5i EQ1 STEP-OVER 26" ׳ × STEP-THRU 26" ׳ × TOWNIE GO! 8D EQ STEP-OVER 26" ׳ × STEP-THRU 26" × TOWNIE GO! 7D STEP-OVER 27.5" × STEP-THRU 27.5" ׳ × TOWNIE PATH GO! 10D EQ 1 STEP-OVER 27.5" ׳ × VALE GO! 9D EQ 1 / 9D EQ S1 STEP-THRU 27.5" ׳ × 26" × × STEP-THRU 24" × TOWNIE ORIGINAL 7D 26" × × STEP-OVER 26" TALL × × 26" ׳ × STEP-THRU 24" × TOWNIE ORIGINAL 7D EQ 26" ׳ × STEP-OVER 26" TALL ׳ × STEP-THRU 27.5" × × TOWNIE PATH 9D STEP-OVER 27.5" × × STEP-THRU 27.5" ׳ × TOWNIE PATH 9D EQ1 STEP-OVER 27.5" ׳ × 700c Regular × ×4 × STEP-THRU 700c Small × ×4 × LOFT 7D 700c Regular × ×4 × STEP-OVER 700c Large × ×4 × 700c Regular × ×4 × STEP-THRU 700c Small × ×4 × LOFT 7i1 700c Regular × ×4 × STEP-OVER 700c Large × ×4 × 26" × × STEP-THRU CRUISER LUX 1, 3I & 7D 24" × STEP-OVER 26" × × 26" × STEP-THRU 24" × CRUISER 1 26" × × STEP-OVER 26" TALL × × 24" × 26" × × STEP-THRU 24" × CRUISER 7D 26" × × STEP-OVER 26" TALL × × HONEYCOMB 3i STEP-THRU 26" ×5 ×4 ZELDA 3i STEP-THRU 26" × ×4 ANDI 3i STEP-THRU 26" × ×4 KOA 3i2 STEP-THRU 26" ײ ×4 1 OE bike comes with rear rack 3 Front light needs to be removed / rerouted onto front rack for proper installation 5 OE bike comes with front basket 2 OE bike comes
    [Show full text]