Compliant Floating-Opposing-Arm (FOA) Centrifugal Clutch

[+] Author and Article Information
Nathan B. Crane

Department of Mechanical Engineering, 35-011, Massachusetts Institute of Technology, Cambridge, MA 02139e-mail: ncrane@mit.edu

Larry L. Howell, Brent L. Weight, Spencer P. Magleby

Mechanical Engineering Department, Brigham Young University, Provo, UT 84602

J. Mech. Des 126(1), 169-177 (Mar 11, 2004) (9 pages) doi:10.1115/1.1639378 History: Received November 01, 2001; Online March 11, 2004
Copyright © 2004 by ASME
Topics: Torque , Design
Your Session has timed out. Please sign back in to continue.


Goodling,  E. C., 1974, “Fighting High Energy Costs with Centrifugal Clutches,” Mach. Des., 46(23), pp. 119–124.
St. John,  R. C., 1979, “Centrifugal Clutch Basics,” Power Transmission Design, 21(3), pp. 52–55.
Kellerman, R., and Fischer, J. L., 1976, “Centrifugal Clutch with One Piece Rotor,” United States Patent No. 3945478.
Dietzsch, G., Frers, G., Henning, K., and Lux, H., 1977, “Rotor for Centrifugal Clutch,” United States Patent No. 4016964.
Suchdev, L. S., and Campbell, J. E., 1989, “Self Adjusting Rotor for a Centrifugal Clutch,” United States Patent No. 4821859.
Roach, G. M., Lyon, S. M., and Howell, L. L., 1998, “A Compliant, Over-Running Ratchet and Pawl Clutch with Centrifugal Throw-Out,” Proceedings of the 1998 ASME Design Engineering Technical Conferences, DETC98/MECH-5819.
Roach, G. M., and Howell, L. L., 1999, “Evaluation and Comparison of Alternative Compliant Over-running Clutch Designs,” Proceedings of the 1999 ASME Design Engineering Technical Conferences, DETC99/DAC-8619.
Sevak, N. M., and McLarnan, C. W., 1974, “Optimal Synthesis of Flexible Link Mechanisms with Large Static Deflections,” ASME Paper No. 74-DET-83.
Bisshopp,  K. E., and Drucker,  D. C., 1945, “Large Deflection of Cantilever Beams,” Q. App. Math 3(3), pp. 272–275.
Howell,  L. L., and Midha,  A., 1994, “A Method for the Design of Compliant Mechanisms with Small-Length Flexural Pivots,” ASME J. Mech. Des., 116(1), pp. 280–290.
Howell, L. L., and Midha, A., 1994, “The Development of Force-Deflection Relationships for Compliant Mechanisms,” Machine Elements and Machine Dynamics, DE-Vol. 71, 23rd ASME Biennial Mechanisms Conference, pp. 501–508.
Howell, L. L., 2001, Compliant Mechanisms, John Wiley and Sons, New York.
Ananthasuresh, G. K., Kota, S., and Gianchandani, Y., 1994, “A Methodical Approach to the Design of Compliant Mechanisms,” Solid-State Sensor and Actuator Workshop, Hilton Head Island, South Carolina, pp. 189–192.
Frecker,  M. I., Ananthasuresh,  G. K., Nishiwaki,  S., Kikuchi,  N., and Kota,  S., 1997, “Topological Synthesis of Compliant Mechanisms Using Multi-Criteria Optimization,” ASME J. Mech. Des., 119(2), pp. 238–245.
Saxena,  A., and Ananthasuresh,  G. K., 2001, “Topology Synthesis of Compliant Mechanisms for Nonlinear Force-Deflection and Curved Path Specifications,” ASME J. Mech. Des., 123, pp. 33–42.
Pedersen,  C. B. W., Buhl,  T., and Sigumund,  O., 2001, “Topology Synthesis of Large-Displacement Complaint Mechanism,” Int. J. Numer. Methods Eng., 50, pp. 2683–2705.
Norton, R. L., 1998, Machine Design: An Integrated Approach, Prentice-Hall, New Jersey, pp. 959–988.
Shigley, J. E., and Mischke, C. R., 1989, Mechanical Engineering Design, Fifth Edition, pp. 627–664.
Orthwein, W. C., 1986, Clutches and Brakes Design and Selection, Marcel Dekker, Inc., New York, New York.
South, D. W., and Mancuso, J. R., 1994, Mechanical Power Transmission Components, Marcel Dekker, Inc., New York, New York.
Goodling, E. C., 1977, “Trailing Shoe Type Centrifugal Clutch-Design Principles and Characteristics,” ASME Papers, DET-126.
St. John,  R. C., 1975, “Centrifugal Clutch Has Gentle Touch,” Power Transmission Design, 17(3), pp. 40–42.
Town,  H. C., 1988, “Clutches for Machine Control,” Power International, 34(401), pp. 247–249.
Crane, N. B., Howell, L. L., and Weight, B. L., 2000, “Design and Testing of a Compliant Floating-Opposing-Arm (FOA) Centrifugal Clutch,” Proceedings of the 2000 Power Transmission and Gearing Conference, DETC2000/PTG-14451.
Crane, N. B., 1999, “Compliant Centrifugal Clutches: Design, Analysis, and Testing,” M.S. Thesis, Brigham Young University, Provo, Utah.
Cook, B., and Parker, B., 1996, “Tensile Test Analysis of Polypropylene at Different Sizes and Pull Speeds,” Unpublished class project for Mechanical Engineering 352, December.


Grahic Jump Location
A FOA clutch in its undeflected position
Grahic Jump Location
The PRBM of the clutch overlaid on the clutch geometry with the centrifugal forces shown
Grahic Jump Location
(a) The applied forces and deflection path of a single shoe and its PRBM before contact. (b) The applied forces and deflected position of a pair of shoes and their PRBM after contact. (Deflections are shown much larger than actual deflections.)
Grahic Jump Location
Explanation of variables used in the FOA clutch engagement model
Grahic Jump Location
Parameters used in calculating TB factor for the FOA clutches. (a) External forces and appropriate position vectors. (b) Free body diagrams of the two links.
Grahic Jump Location
Explanation of parameters used to define the prototype FOA clutches
Grahic Jump Location
Clutch test setup. The tachometer measures the clutch speed. The clutch spins inside the stationary clutch drum. The output torque is measured by the reaction torque gauge mounted between the tailstock and the clutch drum. The clutch drum is mounted on the driving shaft with bearings.
Grahic Jump Location
Torque capacity versus coefficient of friction for the FOA #3 clutch. The torque capacity approaches infinity when the coefficient of friction is at the critical value for self-locking.
Grahic Jump Location
Drawing of general S-clutch configuration
Grahic Jump Location
Two S-clutches from a Homelite Versatool string trimmer. The outer diameter of the clutches is 6.12 cm (2.41 inches).
Grahic Jump Location
(a) The prototype FOA clutch for the string trimmer. (b) The FOA clutch mounted on the string trimmer.




Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In