bell crank lever calculations

Keywords: bell crank lever, bending Stresses in lever, FEA, Photo-elasticity. The bell crank on Wilwood's 60 Degree Mount Pedaland Remote Tru-Bar Pedalworks the opposite way,increasingthe pedal ratio of the pedal connected to it. The hardest part is usually getting the tape up under the dashboard where the upper pivot of the brake pedal and pushrod mount. Akard of San Francisco, who patented a. I'm pretty sure I'm going to have to use a bell crank to gear down the force but I have no idea what an acceptable or target force should be. lever It is . Privacy Policy. 1 They can be used to change the angle of motion through any angle but 90 is common. There wereseveral reasons for this. Clipping is a handy way to collect important slides you want to go back to later. I find a formula F1L1 =F2L2 for a right angle bellcrank. ; For numerical analysis bell crank lever is prepared using ANSYS and this model of bell crank lever in ANSYS where 2 (Learn more), Copyright 2023 Wilwood Engineering, Inc. - All Rights Reserved. Only one person must take all the readings, because eye-judgement for matching the pointer with the mark on the lever will vary from individual to individual. FE Stress (MPa) VIEW | DOWNLOAD ( Hand-Written Practical) Video Tutorial. It is known to us that any bending stress is always of either tensile or compressive nature. It also works the opposite way round. Lever used in safety valve is an example of lever of this class. Hand Lever. +P2 {Assume B=3t or any other relation given in problem}. The shaft is subjected to torsion and lever You can read the details below. THEORY The bell crank lever is an apparatus used to verify the law of moments. Second Class In this type output between fulcrum and input.This type of lever is used in spring loaded safety valve mounted on the boilers. Length of lever in mm ( FA) = 70 mm ; The part of a lever where load is applied is called the load arm AL. (a) Make all significant dimensions, including tolerances and allowances. Picture Information. Terms of Service. I'll see if I can make a graph. We've encountered a problem, please try again. If youre struggling with your assignments like me, check out www.HelpWriting.net . Lower values are used for high relative velocity, frequent motion and intermittent lubrication conditions. By varying the angle of the crank piece, it can be used to change the angle or movement from 1 degree to 180 degrees. _______________________________________________________________________________________________ Design of lever involves determination of various dimensions of the lever for a specified load or output force required. Pin is designed based on bearing and bending considerations as discussed below. Prof.S.D.Khamankar***3 (I know it changes through the movement) (Due to time restraints). _______________________________________________________________________________________ a) 1000mm b) 100mm c) 10mm d) 10000mm View Answer. ahmedabad: bangkok: 30: 0.0317: pcs: 1056.0: 2016-02-08: 84529099 "gabbar" brand spare parts for model no:st 1002 la ;bell crank lever balljoint (top) ahmedabad: bangkok: 20: 0.0088: pcs: 439.0: 2016-02-08: 84529099 "gabbar" brand spare parts for model no:st . If dp and lp are diameter and length of the pin respectively, bearing pressure is given by. Fulcrum of the lever is a pin joint and is designed based on bending and bearing considerations. 1800# x (1.5/11.5) x (1/3) x (2.5/5.5) = 36#. Porsche 356/911/912 Bell Crank Reverse Lever/ No Shaft #8 Bag#20 C#106. Most commonly used sections for lever arms are: rectangular, elliptical and I-section. Chandrapur, India Free shipping. The effort arm, in this case, is smaller than the load arm; therefore the mechanical advantage is less than one. - order new bell crank arm, crank holder (make sure you've ordered correct side for these two - L is driver's, R is passenger), pin, and c-clip for pin (apprx. 1) Design a bell crank lever i to raise a load of 5 KN at the short arm end by applying proper effort. So, when increasing the motion ratio, take care to get as low a friction as possible in all components so as to not lose grip. VIEW | DOWNLOAD ( Hand-Written Practical) Example: Calculate the mechanical advantage and the load force of a first-class lever if its effort arm is 50 cm, load arm is 20 cm and effort force is 10 N. Input Lever class 1 2, AE > AL 3, AE < AL Effort Arm (Input Distance) AE Load Arm (Output Distance) <>>> 8. Journal of University of Shanghai for Science and Technology If that is the result of the equation then it appears there is a problem with the equation; and, a complicating factor is that the amount of F1 force that the operator can apply will not be constant due to the fact that his weight contribution vector is always vertically downward. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> nk^Vh,wc&+G1L1XK[EP-5=jAuCd-f:/b2FV ibNzeG.0=RNB% Then just do the math for each series of pivots. You barely find information on the actual stitch length in vintage Singer 29K manuals whereas the bell crank levers are marked with numbers between 5 and 16 (most of the time). The bearing pressure on the pin is to be limited to 12 N/mm 2 . But certain brake setups (Like the booster at top from a 1966 Ford Mustang) require more measuring and extra math because of a second lever and pivot, commonly called a bell crank. = 60 N/mm2 METHODOLOGY calculation methods given herein are for two general-use gear and shaft arrangements: parallel shaft gears, and cross shaft gears. W 210 = P 70 Table1. Subject - DOMVideo Name - Problem on Bell - Crank LeverChapter - Design of Cotter-Joint, Knuckle - Joint, Levers and Offset LinksFaculty - Prof. Zafar Shaikh. ie. 1 0 obj Looks like you do nice work. ). In the third-class lever, the full length of the lever equals to the load arm: The effort arm (effort position) is calculated from the law of the lever formula above: This article was written by Anatoly Zolotkov. Now you have a target to achieve with your pedal and linkages. F2 = F1L1 / L2 or using above figures F2 = F1 x 60/3 = 20F1. The bearing 25 and 26 are mounted on side plates 17 and . $10.98. Rotational motion Answer (a) A system of forces acting on a bell crank is as shown. INTRODUCTION TO PROBLEM, SCOPE AND The cross-section of the lever is obtained by considering the lever in bending. Bell crank lever apparatus, slotted weight, spring balance etc. Free shipping. Associate Professor Department of As a suggestion for the "spring" I mentioned in my last post; obviously, you are going to want something that is as simple and compact as possible and one way to achieve this may be by placing a sheet or sheets of high hardness elastomer cut to the dimensions of the bottom of your mold cavity on top of the bottom plate and then placing a similar size metal plate on top of that which will serve as the actual bottom of the mold cavity. JavaScript is disabled. Fullscreen. Calculate the reaction or force acting on the . Video Tutorial. (b) The bearing stress in the bell crank may not exceed 100 MPa. The bellcranks pivot points; the shock side is 16", the axle side is 28", and the 3rd side is aprox. Name: Ankush Sharma. The load is applied between the effort and the fulcrum. Copyright 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Lever for a Lever Safety Valve. Diameter of Shaft obtained on basis of shear stress, Find diameter of shaft d using this equation, Diameter of Shaft at centre of bearing on the basis of shear strength, Find diameter of shaft d1 using this equation, Using this equation find B and t of lever. Aluminium alloys are generally used for levers. Calculation of Ground Reaction The lever is one of the six classical simple machines defined by Renaissance scientists. We've updated our privacy policy. 3 0 obj Activate your 30 day free trialto unlock unlimited reading. Find the distance between the fulcrum and other end of the lever. For one, it streamlined production on the assembly line, as it made installing a brake booster as easy as installing the unboosted master cylinder; there was no need to have another worker inside the car tightening nuts. ** to maintain the working stresses within predetermined specific Back when power brakes were merely optional on most cars, and unboosted four-wheel-drum brakes were the rule, some vacuum boosters were mounted on an offset bracket, inches away from the firewall. The bell crank thickness is 8 mm; therefore, the projected area of the pin is A_{b} = (8 mm)d. Calculate the required pin diameter d: d \geq \frac{130.614 mm ^{2}}{8 mm }=16.33 mm Design of Machine Elements by VB Bhandari, Analysis and Design of Machine Elements by V.K. Click here to review the details. Inspection jigs. If you want to measure and confirm yourself, my suggestion would be to start with a simplified version of the picture from the Buick manual and add measurements. Answer: b Explanation: F xl =F xl. E) that allows control of linear motion in various . In this project work stress analyses of bell crank Taking moments about the fulcrum (F) Piston Slider acceleration: Where: L = length of connecting rod (in, mm), R = Radius of crank (in, mm), X = distance from center of crankshaft A to wrist pin C (in, mm), X = slider velocity (linear velocity of point C) (in/sec, mm/sec), X = Slider acceleration (in/sec 2, mm/sec 2 ), = crank angle measured from dead center when slider . 1 of 8 Stress analysis of bell crank lever Aug. 04, 2017 2 likes 2,097 views Download Now Download to read offline Design paper for design purpose paramjeet singh Follow Teacher at GNDEC-COLLEGE Advertisement Recommended Bending stress and shear stress for Asymmetric I-Section. This increases your mechanical advantage by about 1.5:1 (and actually increasing through the length of the pedal stroke) over the master cylinder pistons, at the same time increasing pedal travel. Here the force from the handlebar lever is turned through 90 to squeeze the brake block against the wheel rim. Optima Ultimate Street Car Series - Willow Springs May 29-30th, 2020, Wilwood Disc Brakes Announces Continued Commitment, Larger Footprint for 2020 SEMA Show. This volume introduces an automation clever mechanism (Fig. The pin at B bears on two 6- mm-thick support brackets. Typically in a bell crank system, a lever pivots at the bottom of the mount, with the pedal attaching 2/3rds up and the pushrod on topfor a1:1.5 ratio, reducing the overall ratio by 33%. The effort arm is larger than the load arm; therefore the mechanical advantage is more than one. International Journal on Recent and Innovation Trends in Computing and Communication ISSN: 2321-8169 Design of fulcrum The long handle is removed from the 'knuckle' before moving the linkages from the lid and raising the brick/block. The basic principle behind the design of hand and foot lever is that it shoulf withstand the force and should not fail in bending. Therefore using suitable values of I and y for selected section, its dimensions can be finalised so that the bending stress remains within the allowable limits. The CAD files and renderings posted to this website are created, uploaded and managed by third-party community members. suggest best method for analysis and best cross section for the analysis of bell crank lever using software packages. So that we can By accepting, you agree to the updated privacy policy. Length of lever in mm. Longer arm is of length 500mm. Class 1 Levers: The fulcrum is between the effort and the load, which are applied at the opposite ends of the lever. 5. Fortunately when looking for images of the linkage, I also found the reprint of the factory service manuals at HometownBuick.com. Hyxg;^.~H0Y}SW(;&3 4SR*bTK@ ) ~jD FHv While measuring the bending, the force must be perpendicular to the moment arm. When the speed of the governor/ engine increases, the ball tends to fly outward from the axis of . Figure III-2 shows details of the exact positioning of the components. Sharma & D.K. Mechanical Engineering Next, put the difference between the first measurement and the compressed measurement in the table above. You can still buy exact duplicates of most of these or universal versions, making it easy to add a power brake booster without drilling extra holes or changing pedals. Input force (also called the effort) - the force applied to the lever. Sorry, I don't see how I can make the already posted images clearer. The bell-cranks are pivoted to the drive arm linkage at a deep groove ball race. From a practical application standpoint, it might be better to start at the point that the handle is at a 45 angle to the ground with the handle F1 force vector vertically down and calculate the F2 toggle force based upon the operator's weight in a range from 45 to 0 for the handle angle. limits, in order to avoid the failure of a member. So we all assume its the stitch length. Figure 29.1 shows the construction of a simple lever. 3.1 Pedal Lever Calculations and FEM Analysis Fig. ANALYSIS OF CNC LATHE SPINDLE FOR MAXIMUM CUTTING FORCE CONDITION AND BEARING IRJET- Theoretical Analysis of Rocker Arm, FEM_Modeling_Project_Evaluation of a Steel Pulley and Shaft Design, Numerical simulaton of axial flow fan using gambit and, Lifting mechanism for attachments of agricultural equipments. are observed that results obtained are in close agreement with each other. 3. Ans :A lever acts like a cantilever from the pivot. Sharma & K. Purohit, Machine Design by P.C. Principle of levers:- The lever principle can be stated as: Load x Length of load arm= Force x Length of force arm Bell Crank Lever: A lever that is bent at a right angle, is called a bell crank lever. Design procedure is discussed below. that's a bit better something is missing though. As the names suggest Hand lever is operated by hand and the foot lever by foot, the basic design procedure of both the levers remains the same with only difference that more froce is applied on the foot lever, so its crosssectional dimensions are naturally bigger than that of a hand lever. Fillet Radius(mm) Max. From the output of these analyses it is observed that results obtained are in close agreement with each Volume: 2 Issue: 8 2423 2430 bell crank lever. The lever is subjected to bending moment, Mechanical Engg Simple Notes ,Solved problems and Videos, 1)Diameter of shaft d {subjected to torque only}, 2) Diameter of shaft at centre of bearing d1 {Subjected to torque and Bending moment}, Step 3 : Design Of cross-section of lever ( B,t ), Machine Design I - Introduction to Design : Theory Q&A, Machine Design -I -Design of joints : Theory Q&A, Knuckle Joint : Design Procedure,Problems and Questions, Design of turnbuckle : Design steps, Problems and Question, Design of Levers : Hand Lever, Foot Lever, Bell crank lever, Design of Shafts: Theory and Numerical Problems, Couplings : Design Procedure and Numerical problems, Design Of SPRINGS : Questions and Numerical problems, Belt drives:Theory Q&A and Selection of Flat and V belts. Rocker Arm for Exhaust Valve. Equilibrium: Using the FBD shown, calculate the reaction forces that act on the bell crank. TranslatorsCafe.com Unit Converter YouTube channel, Terms and Conditions method. 1600 Ton CNC Screw Press | 1000 Ton CNC Screw Press | 630 Ton CNC Screw Press Advika ForgeTech is a reliable name in forging industry. Bell crank lever is used to reduce a load by Report DMCA Overview The fixed pivot anchor the linkages to one place. Suitable heat treatment processes are also often employed to improve wear and shock resistance of lever. dangemilind@rediffmail.com Experiment #7 Report: Strain Measurements 2, Finite Element Analysis of Skirt to Dished junction in a Pressure Vessel. By angling the booster and pushrod they provided two different pedal ratios with the same brake pedal by drilling a second, lower hole. 8 -1. st. The examples are a wheelbarrow, a nutcracker, and a bottle opener. when B, A, C are in a straight line with each other, the angle is 180. Output force (also called the load) - the force applied by the lever to move the load. First Class - In this type the fulcrum between Input and output.This type of lever is used in applications like bell crank levers in railway signal mechanism,the rocker arm for the overhead valves of internal combustion engine, and levers of hand pump . How to Build a Crank and Slider Mechanism: 11 Steps. 2. The amount of output force can be changed by moving the fixed pivot. Stress Analysis of Bell Crank Lever by Optimising the Volume, in this project Bell Crank Lever is important components from safety point of view since they are subjected to large number of stresses (1). Bell crank lever is used to reduce a load by Property Symbol Value applying of a small effort. A smaller bore master cylinder connected to the front caliperspaired with a larger bore for the rear provides much greater control of the front to rear brake bias. As discussed in the design of pin for knuckle joint, when the pin is loose in the eye, which is a desired condition here for relative motion, pin is subjected to bending moment. Eventually, General Motors engineers came up with aneasier solution, though not straightforward,and stopped using the bell crank. Design a bell crank, similar to the one shown, to carry a mild shock load. Due care is taken to see that the section modlus of the cross sectionis larger. To calculate the mechanical advantage, only effort and load arms are necessary. The lever principle states that Power*power arm = Weight*weight arm. ie. But, no, on many of these cars there is a second lever arm built into the bracket which lowers the brake pedal ratio. Also for bell crank lever stress http://wiki.dtonline.org/index.php?title=Bell_Crank&oldid=10427, Creative Commons Attribution Non-Commercial Share Alike, More varied models can be constructed using the materials listed at. A lever includes a rigid structure that oscillates around a fixed point called the fulcrum. ok. Lever having load point located between the fulcrum and effort point is called Class II lever. It is one of a type of lever. Lever having effort point located between the fulcrum and load point is called Class III lever. That is a very high pressure . Property Symbol Value School: ABES Engineering College. "gabbar" brand spare parts for model no:st 1002 la ;bell crank lever ball joint assy. 2) Boss : Which holds the shaft and is coupled to shaft with a Key, it actsa as a hollow shaft and subjected to torque. OK. 4.1, 4.2, and 4.3. $77.00. ;'")hD@tOcG_}ubw2z}>v}]m\r[meW//4QYT"\^Ee,be=nw0etKJEh} Q4/|"7|Ld$JQrWIo7{RA7vpcu F*9B"Y-'YO-L *I#JE>~A#xi4)%KRXs>CdiY!&%DU@ Ug:TZ|3 M-Ny DESIGN PROJECT 2: BELL CRANK. by Dr. Mohammed Imran, Torsional and bending stresses in machine parts. It is difficult to forge curved levers with complicated cross-sections and have to be cast. Picture 1 of 2. If you are author or own the copyright of this book, please report to us by using this DMCA report form. [ Bell Crank Design ] 3 The bellcrank that you design will need to fit the exact ball bearing, ball joint linkages, and spring shown in the supporting information. This increases your mechanical advantage by about 1.5:1 (and actually increasingthrough the length of the pedal stroke) over the master cylinder pistons,at the same time increasing pedal travel. Table 29.1 Common Sections used for Lever Arms, Figure 29.4 Section of Lever Arm at Fulcrum, 29.3.3 Design of Fulcrum. Hover to zoom. Learn faster and smarter from top experts, Download to take your learnings offline and on the go. Table No.5- 1st Principal Stress of Bell Crank Lever with Varying Fillet Radius. Bell crank lever calculations. Pin is subjected to double shear and maximum shear stress is given by. P is the applied effort required to overcome load, W. Ratio of load to effort is called Mechanical Advantage and ratio of effort arm length to load arm length is called leverage. Can't tell for sure but I think that the lever mechanism uses the toggle clamp principle to get a very high final force level on the piston puller . The calculator determines the load force and mechanical advantage of a lever of any order. Click to enlarge. Ans :A lever is defined as a mechanical device in the form of a rigid link which is pivoted about a fulcrum to transfer or multiplythe force.A lever is used for transmitting a force at one location to a different location alongwith change in direction or even change in magnitude of the force. (edit add : OK Tom has corrected formula. Direct Mount Aerolite AERO6-DM Brake Upgrade Kits for On and Off-Road Trucks, Wilwood Users Dominate at King of the Hammers, America's Most Beautiful Roadster 2023 Features Wilwood Brakes, Wilwood Disc Brakes Designated the Official Brakes of the Triple Crown of Rodding, Pro Build - Pullman Fabrications Ford Pinto Cruising Wagon. This online unit converter allows quick and accurate conversion between many units of measure, from one system to another. IJRITCC | August 2014, Available @ http://www.ijritcc.org 3) Key : The function of key is to couple the shaft and the boss. stress analysis is done by FEM. The values of loads are taken from the calculations. (a) The average shear stress in the pin may not exceed 40 MPa. Bending moment is zero at the point of application of forces and is maximum at the fulcrum. #Advikaforgetech #Forging #Consultant #Overhauling #Services #Shorts We are a global company providing turnkey services for setting up forging plants along w. The angle becomes smaller. Mr. M. M. Dange*1 crank lever is prepared by picking data from design data book. _________________________________________________*****_________________________________________________ The usual range of allowable bearing pressure for brass/bronze bush and steel pin is 10-25 N/mm2. IRJET- Experimental Investigation of Flow through Perforated Plate in Conical Analytical solutions for square shape pressure, Instrumentation Lab. I'll use distance from A to F1 as X, AB as Y, angle BAC as a (alpha), angle ABC as b (beta). Design Procedure of Bell Crank Lever - Design of Cotter Joint Knuckle Joint Levers and Offset Links Ekeeda 966K subscribers Subscribe 690 Share 80K views 6 years ago Design of Machine (DOM). III. Determine Stresses on bell Crank lever In the second-class lever, the full length of the lever equals to the effort arm: The load arm (load position) is calculated from the law of the lever formula above: Class 3 Levers: The fulcrum and the load are located on the opposite sides of the lever. Picture 1 of 4. LESSON 31 DESIGN OF THIN CYLINDRICAL & SPHERIC Last modified: Monday, 24 March 2014, 11:34 AM. Calculate the effort (P) required to raise the March 29th, 2020. One such patent was filed by D.B. Aggarwal, UG Courses - Agricultural Engineering (Version 2.0). Discussion in 'Traditional Hot Rods' started by magnus13, Nov 16, 2019. The projected area of pin B on the bell crank must equal or exceed. 3) Application of lever (Foot lever and hand lever). P = 300 N Determine the minimum diameter d required for pin B for each of the following conditions: Load applied on the lever (W) = 100 N ; Mechanical Engineering This is especially helpful, since a balance bar system splits your leg effort between two master cylinders. Comparative studies on formability analysis in metal, Moment of inertia of non symmetric object, ESA Module 2 ME832. 1) Shaft : Which transmits the motion/force from hand/foot lever to another machine part, it is subjected to Torque. What's got me stumped is as the bellcrank short lever swings around A the lifting shaft B to C is less and less right angle to it. Lengths of vertical and horizontal arms of the bell-crank levers are the same i.e., a = b Spring stiffness (k) for a Hartnell governor is, k = 2 ( a b) 2 ( F 2 F 1 r 2 r 1) k = 2 ( 1) 2 ( 2000 100 20 15) K = 760 N/cm Nearest option is 800 N/cm Download Solution PDF Share on Whatsapp Latest UPSC IES Updates Last updated on Jan 27, 2023 The objectives of this study is to A bellcrank is a type of crank that changes motion through an angle. Instant access to millions of ebooks, audiobooks, magazines, podcasts and more. This traditional item enables the reaction force of a 90 bell crank to be measured by a spring balance when a load is applied at any of five leverage ratios. Example: Calculate the fulcrum position of a first-class lever if its total length is 60 cm, the effort force is 10 N and the load force is 20 N. In the 2nd class lever, the fulcrum and effort are at the opposite ends of the lever. In the first-class levers, the load arm can be larger or smaller than the effort arm and their mechanical advantage can be greater than, less than or equal to one. A practical example of this is the brake mechanism on a bicycle. experimentally. Does this then mean the piston needs to apply 2900 lb x 72 = 208,800 lb of force to achieve the required compression on the Earth block? This page was last modified on 5 February 2018, at 09:04. Check if this part fits your vehicle. Free shipping. 3 2-D Model of Lever Fig -4: Force Analysis 3.1.1. The Brake Caliper on a bicycle is a common device which uses the principle of this mechanism. The bell crank thickness is 8 mm; therefore, the projected area of the pin is A_{b} = (8 mm)d. Calculate the required pin diameter d: (c) The bearing stress in the support bracket may not exceed 165 MPa. Contact the seller. applying of a small effort. I decided to attach the workbook rather than spend time trying to describe everything. It is also necessary to know the stress Activate your 30 day free trialto continue reading. Sr. No. This is a bell crank / connecting rod / slide arrangement . Cutting Parameter Optimization for Surface Finish and Hole Accuracy in Drilli Empirical relation to estimate the reduction of root fillet stress in spur ge Fe investigation of semi circular curved beam subjected to out-of-plane load, Analysis of problems of biomass grinder integrated, Simulation and Performance of AC Drives Using SVPWM Technique. Assume a = 200 mm, b = 150 mm, and = 65. If you have ever wondered why the booster and master cylinder are angled up slightly on some cars, with the front higher than the back, that was their solution. The table below can be used for measurements. EXPERIMENT 10 - To determine the mechanical advantage, Velocity ratio and Mechanical efficiency of the Differential Wheel and Axle. Bell crank linkages can come in a number of different sizes and are used across a range of different applications. NEW BRIGGS AND STRATTON CRANK BELL LEVER 394670 FREE SHIPPING. It appears that you have an ad-blocker running. The force from the pedal is multiplied and increased when fed into the balance bar and dual master cylinders. Final weight of the component = 158 gm. The equivalent or vonMises stresses for different shapes of - lever are shown in the figures from Fig.5 to . A key to applying this to the design is to design the initial contact pressure point at the minimum handle angle from the horizontal that will still guarantee the required compression pressure at full travel. For severe loading conditions or fatigue loading higher factor of safety is also taken. 4) In governors bell crank levers are used. Example: Calculate the mechanical advantage and the load force of a first-class lever if its effort arm is 50 cm, load arm is 20 cm and effort force is 10 N. To calculate, enter the values and tap or click the Calculate button. Report DMCA Overview If an L-shaped lever is pivoted at its centre, the direction of the input movement or force would be turned through 90 at the output. analytical calculation of the induced stresses and comparing Are you sure that this is the correct figure ? load 100N. Reaction force acting on the fulcrum can be calculated. The sleeve moves up and down depending on the governor's speed. I then took it over to my press and with a socket or release bearing that can ride on all the clutch fingers in place, measure the static height. Changing the pivot point here will change the amount of output force that is achieved. For the ideal lever, which does not dissipate the energy and absolutely rigid, the ratio of the lever arms defines the ratio of the effort and load forces (this is known as the law of the lever): The mechanical advantage of the lever is defined as the ratio of the output force (load) FL to the input force (effort) FE: The load force can be defined from this equation: There are three types of levers depending on the relative positions of the fulcrum, the effort and the load (or resistance).