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Articles About Repair Parts Inc


1 The Second Edition... (March/April 1995)

Gearing for Munchkins Gene Kasten, president of Repair Parts, Inc., of Rockford, IL, is the proud owner of a miniature Barber-Colman hobber, the only one of its kind in the world. The machine, a replica of the old B-C "A" machine, was built between 1933 and 1941 by W. W. Dickover, who devoted 2, 640 hours of his spare time to the project.

2 A Logical Procedure To Determine Initial Gear Size (November/December 1986)

When a gear set is to be designed for a new application, the minimum size gears with the required capacity are desired. These gears must be capable of meeting the power, speed, ratio, life, and reliability requirements.

3 Leonardo, the Engineer (January/February 1989)

These lines, interesting enough, are from the notebooks of an artist whose images are part of the basic iconography of Western culture. Even people who have never set foot in a museum and wouldn't know a painting by Corregio from a sculpture by Calder, recognize the Mona Lisa. But Leonardo da Vinci was much more than an artist. He was also a man of science who worked in anatomy, botany, cartography, geology, mathematics, aeronautics, optics, mechanics, astronomy, hydraulics, sonics, civil engineering, weaponry and city planning. There was little in nature that did not interest Leonardo enough to at least make a sketch of it. Much of it became a matter of lifelong study. The breadth of his interests, knowledge, foresight, innovation and imagination is difficult to grasp.

4 All Hail Leonardo (June/July 2012)

The ultimate Renaissance man was also a gear man. Addendum pays tribute to Leonardo da Vinci.

5 Industry News (August 2014)

The complete Industry News section from the August 2014 issue of Gear Technology.

6 Watch This Space (January/February 1995)

Good References In the 7th Edition of McGraw Hill Encyclopedia of Science and Technology, 10 pages are devoted to the subjects of Gears, Gear Cutting and Gear Trains.

7 Gear Transmission Density Maximization (November/December 2011)

This paper presents an approach that provides optimization of both gearbox kinematic arrangement and gear tooth geometry to achieve a high-density gear transmission. It introduces dimensionless gearbox volume functions that can be minimized by the internal gear ratio optimization. Different gearbox arrangements are analyzed to define a minimum of the volume functions. Application of asymmetric gear tooth profiles for power density maximization is also considered.

8 Next Stop Cincinnati (September 2011)

What's not to like about a more focused, user-friendly Gear Expo? Booth Previews.

9 Repair of High-Value, High-Demand Spiral Bevel Gears by Superfinishing (October 2012)

Following is a report on the R&D findings regarding remediation of high-value, high-demand spiral bevel gears for the UH–60 helicopter tail rotor drivetrain. As spiral bevel gears for the UH–60 helicopter are in generally High-Demand due to the needs of new aircraft production and the overhaul and repair of aircraft returning from service, acquisition of new spiral bevel gears in support of R&D activities is very challenging. To compensate, an assessment was done of a then-emerging superfinishing method—i.e., the micromachining process (MPP)—as a potential repair technique for spiral bevel gears, as well as a way to enhance their performance and durability. The results are described in this paper.

10 Repair via Isotropic Superfinishing of Aircraft Transmission Gears (May 2009)

The objective of this paper is to demonstrate that transmission gears of rotary-wing aircraft, which are typically scrapped due to minor foreign object damage (FOD) and grey staining, can be repaired and re-used with signifi cant cost avoidance. The isotropic superfinishing (ISF) process is used to repair the gear by removing surface damage. It has been demonstrated in this project that this surface damage can be removed while maintaining OEM specifications on gear size, geometry and metallurgy. Further, scrap CH-46 mix box spur pinions, repaired by the ISF process, were subjected to gear tooth strength and durability testing, and their performance compared with or exceeded that of new spur pinions procured from an approved Navy vendor. This clearly demonstrates the feasibility of the repair and re-use of precision transmission gears.

11 Balancing: Smoke and Mirrors No Longer (January/February 2013)

By virtue of collected anecdotal accounts, equations and problem solving, balancing is discussed as more math and common sense, and less smoke and mirrors.

12 Forget the View...Check Out Those Gears! (June 2007)

On May 20, the city of Pittsburgh celebrated the 130th anniversary of the Duquesne Incline, a funicular railway that allows passengers to travel via cable car to an observation area and catch a panoromic view of the city and—most importantly—get a bird’s eye glimpse of the gear teeth in action.

13 Chiming in on Gear Noise: Three Experts Have their Say (August 2011)

It is said that “The squeaky wheel gets the grease.” Ok, but what about gear noise? We talked to three experts with considerable knowledge and experience in this area.

14 Longfellow's Queen of the West (October 2011)

Let's take a look at Cincinnati -- Henry Longfellow's "Queen of the West" and Ohio's third-largest city.