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International Journal for Scientific Research & Development IJSRD - International Journal for Scientific Research & Development| Vol. 5, Issue 05, 2017 | ISSN (online): 2321-0613 Design & Modeling of Chainless Bicycle with Gear Mechanism Aakash Patel1 Hitesh Prajapati2 Vivek Patel3 Amit Patel4 1,2,3,4Department of Mechanical Engineering 1,2,3,4Dr.Jivraj Mehta Institute of Technology Abstract— This Project is developed for the users to rotate stallion was enhanced by respectable Karl daris in the back wheel of a bicycle using shaft. Usually in bicycle, Mannheim , Germany and secured in France in February chain and sprocket method is used to drive the back wheel. 1818. A shaft driven bicycle is a bicycle that uses a shaft drive instead of chain drive which contain two set of bevel gear at III. TYPES OF BICYCLE both ends to make a new kind of transmission system and Bicycles can be categorized in many different ways:- transmit motion through 900 angle. By function Key words: Chainless Bicycle, Gear Mechanism By number of riders, By general construction I. INTRODUCTION By gearing or by means of propulsion. An shaft-driven cycle is An cycle that employment An The more basic sorts incorporate utility bicycle, travel length In place of a string on broadcast power from mountain bicycle, hustling bicycle, visiting bicycle, cross these pedals of the wheel. A post pushed cycle is really a breed bicycle, cruiser bicycle, and BMX bicycles. cycle that employs a push length rather than String to broadcast inward device invention, only a little quantity of A. Performance: current day shaft-driven cycle have already been presented. The bicycle is amazingly equipped in both normal and Shaft-driven cycle have an amazing inclination equipment in mechanical terms. The bicycle is the most fit human- which a schedule bicycle might have their string ring. That controlled procedure for transportation to the degree lattices with yet another inclination equipment installed on imperativeness a man must eat up to travel a given portion the travel shaft. The using inclination riggings allows the from a mechanical point of view, up to 99% of the rocker of the travel torque from the pedals to be made significance went ahead by the rider into the pedals is through 900 degrees. The travel length then has yet another transmitted to the wheels, paying little mind to the way that viewpoint equipment near the straight back wheel middle the usage of get prepared instruments may position which systems with a inclination equipment on the lessen this by 10–15%. Additionally, the carbon centre. Wherever the trunk sprocket will be on a standard dioxide set aside a few minutes and transportation of the cycle, and counteracting the key travel torque modify of hub sustenance required by the bicyclist, per mile voyaged, is energy from the pedals to the wheel span of action. Canal under 1/10 that passed on by imperativeness skilled pushes were shown around a century previous, however motorcars. were for the absolute most portion replaced by chain-driven B. Overall View of the Chainless Bicycle:- cycle due to the rigging stages imaginable with sprockets and derailleur. II. HISTORY OF BICYCLE A Bicycle, routinely called a bicycle, is a human controlled, pedal driven, besides single-track vehicle, in design two wheels joined to a bundling, one behind the other. Fig. 1.2: over all the chinless Bicycle Fig. 1.1: Dandy Horse In history the dandy steed is human power vehicle. It's a first means transport to make utilization of the bike control, is seen as the agent of the bicycle .The dandy All rights reserved by www.ijsrd.com 366 Design & Modeling of Chainless Bicycle with Gear Mechanism (IJSRD/Vol. 5/Issue 05/2017/085) IV. DESIGN AND CALCULATIONS OF CHAINLESS BICYCLE V. DESIGN OF PINION A. Design of Front Gear Fig. 2.2: Design of Pinion Diametric pitch as well as number of teeth is selected based on standard catalog and with help of guide. 1) Calculate pitch diameter (D): D = N/P = 20/2.2497 Fig. 2.1: Design of Front gear = 8.89 Note : All dimension are in centimeter. 2) Calculate pitch angle: B. Calculation of gear tan ᵞg = Zg/Zp = 40/20 Diametric pitch as well as number of teeth is selected based -1 on ᵞg = tan (2) standard catalog and with help of guide. = 63.43° 1) Calculate pitch diameter (D): 3) Calculate Addendum (a): a = 1/p D = N/P = 40/2.624 = 1/2.2497 D = 15.24 = 0.4445 2) Calculate pitch angle (ᵞg): 4) Calculate whole depth (hg): tan ᵞg = Zg/Zp hg = (2.1888/p) + 0.002 = 40/20 = (2.1888/2.2497) +0.002 ᵞg = tan-1(2) = 0.9749 = 63.43° 5) Calculate Dedendum(b): 3) Calculate Addendum (a): b = hg – a a = 1/p = 0.9749 – 0.4445 = 1/2.624 = 0.5304 = 0.3810 6) Base circle Diameter(Da): 4) Calculate whole depth (hg): Da = D*Cos(20) hg = (2.1888/p) + 0.002 = 8.89*Cos(20) = (2.1888/2.624) +0.002 = 3.6278 = 0.836 7) Out side Diameter (Do): Calculate Dedendum (b): DO = D + 2a b = hg – a = 8.89+ 2*0.4445 = 0.836 - 0.381 = 9.779 = 0.455 8) Root diameter (Dr): 5) Base circle Diameter (Da): Dr = D – 2b Da = D*Cos(20) = 8.89 – 2*0.5304 = 15.24*Cos(20) = 7.8292 = 6.2191 6) Out side Diameter (Do): VI. DESIGN OF ASSEMBLY DO = D + 2a = 15.24 + 2*0.381 = 16.002 7) Root diameter (Dr): Dr = D - 2b = 15.24 - 2*0.455 = 14.33 Fig. 2.3: Design of assembly All rights reserved by www.ijsrd.com 367 Design & Modeling of Chainless Bicycle with Gear Mechanism (IJSRD/Vol. 5/Issue 05/2017/085) A. Analysis of the Front Gear [3] Gicky Jose Malppan ,Tom Sunny. “A Review on Design Developments in Bicycle ’’ International Research Journal of Engineering and Technology (IRJET) Volume: 02 Issue: 03 June-2015 [4] Mayur Linagariya,Dignesh Savsani."Dynamic Chainless Bicycle", International Journal of Advance Research in Engineering, Science & Technology (IJAREST),Volume 2,Issue 5, May- 2015. [5] Sanjay B. Zope, Amol R. Patil, and Swapnil Wakale, “Design and analysis of chainless transmission,” International Journal of Scientific and Technical Advancements, Volume 2, Issue 2, pp. 79-82, 2016. [6] Fred Herbert Colvin; Frank Arthur Stanley (1914). American Machinists' Handbook and Dictionary of Shop Terms: A Reference Book of Machine Shop and Drawing Room Data, Methods and Definitions. Fig. 2.4: Analysis of Front Gear McGraw-Hill book Company, Incorporated. p. 121. B. Analysis of the Rear Gear Retrieved 14 August 2014. [7] ISO/DIS 21771:2007 : "Gears – Cylindrical Involutes Gears and Gear Pairs – Concepts and Geometry", International Organization for Standardization, (2007). Fig. 2.4: Analysis of Rear Gear VII. CONCLUSION The present Work deals with design Optimization. i.e., converting rotary motion into linear motion with aim of two bevel gears. The present work aimed to reduce the wastage of human power on bicycle riding or any machine, which employs drive shaft and it is achieved by using light weight drive shaft with bevel gear on both sides designed on replacing chain transmission. VIII. FUTURE SCOPE At high speed vibration occur in the bicycle by using such mechanism we can reduce the vibration at high speed. Gear backless problem is occurs sometimes which resulting noise and overheating can be overcome by following standard design characteristics. REFERENCES [1] Jyoti A. Durgude, Gawade S.R."Design of Dual Mode Bicycle by Using Gear Box",International Journal of Engineering and Innovative Technology (IJEIT), Volume 4, Issue 12, June 2015. [2] M.Rama Narasimha Reddy,"Design & Fabrication of Shaft Drive for Bicycle",International Journal of Emerging Engineering Research and Technology,Volume 2, Issue 2, May 2014. All rights reserved by www.ijsrd.com 368 .
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