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Bicycle Braking Performance Testing and Analysis

Momentum Engineering Corp.-Nicholas Famiglietti, Benjamin Nguyen, Edward Fatzinger, Jon Landerville
  • Technical Paper
  • 2020-01-0876
To be published on 2020-04-14 by SAE International in United States
The goal of this study was to determine the braking capabilities of different bicycle types, with different brake setups and applications. A variety of bicycles, including a mountain bike, beach cruiser, BMX bike, road bike, and commuter bike were used to perform brake-to-stop tests. Prior to brake testing, the bicycles were fully inspected, prepped, and documented. Details of the bicycles’ make, model, tires, wheels, brake setup, suspension setup, and preexisting damage were photographed and recorded. The standardized brake testing procedure consisted of rear only brake application and both front and rear brake application. In order to maintain brake application consistency, a single rider performed all series of the skid/brake tests at the same location, on dry asphalt. The tests were performed at an initial velocity of 9 – 20 mph. For each test, the rider accelerated to the test speed and applied maximum braking effort while maintaining a natural upright position to reduce lean. The tests were performed on a painted grid for visibility purposed in measuring skid lengths and post-test video analysis. The bicycle…
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Motorcycle Rider Inputs During Typical Maneuvers

Exponent Inc.-Todd A. Frank, Graeme Fowler, Christina Garman, Sarah Sharpe
  • Technical Paper
  • 2020-01-1000
To be published on 2020-04-14 by SAE International in United States
The purpose of this research is to document representative examples of control inputs and body positioning experienced riders use to control a motorcycle through maneuvers representative of those encountered during real-world operation. There is limited publicly available data that tracks the magnitude or direction of steering head rotation, steering torque input, etc. used by a rider to initiate and exit a turn as well as maintaining directional control during maneuvers ranging from slow parking lot turns to high speed lane changes. Using Exponent’s Test and Engineering Center (TEC) track and skid pad, a course was defined that included several maneuvers at various speeds and radii. A previous paper [1] investigated the influence of rider kinematics (weight shift) on motorcycle control. This paper focuses on rider control inputs to affect a motorcycle’s path and lean angle in a set of maneuvers including a constant radius turn, low speed U-turn, left turn from stop sign, steer reversal, slalom, and avoidance.
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Evaluation of High Resistance Connection in Automotive Application

General Motors LLC-Manoj Modi, Brad Galgoci
  • Technical Paper
  • 2020-01-0926
To be published on 2020-04-14 by SAE International in United States
Electrical connections have a normal operational temperature range. A high resistance, such as a poor connection, in an electrical circuit has been reported to cause a temperature increase exceeding normal operational range at the connection.This study measures the temperature increase in a typical automotive bolted battery cable connection with low to zero torque values and simulated high resistance under different load conditions. The torque is changed from maximum design value to 0 Nm and the temperature increase at the connection is measured. The high resistance connections, manually created by adjusting the contacts, are tested for several power loss values at the connection. The temperature rise under these conditions at the connection is measured and subsequently recorded.The maximum temperature increase at the bolted cable connection recorded at low torque values including 0 Nm torque compared to the maximum typical design value of 17 Nm is 10.5 °C. The maximum temperature increase for the high resistance bolted connection is a function of the power loss and the voltage drop at the connection.
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CONNECTOR, RECEPTACLE, FLANGE MOUNT, ELECTRICAL, CIRCULAR, HIGH DENSITY, QUICK DISCONNECT, ENVIRONMENT RESISTING, INDIVIDUAL RELEASE, CRIMP TYPE CONTACTS (CLASS A, F, AND W - SERIES 4)

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS81511/51A
  • Current
Published 2020-03-19 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
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CONNECTOR ACCESSORIES, ELECTRICAL, TERMINATION, SHIELD SPLIT SUPPORT RING, COMPOSITE, NONENVIRONMENTAL, STRAIGHT, CATEGORY 7

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS85049/93C
  • Current
Published 2020-03-19 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
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CONNECTOR, RECEPTACLE, FLANGE MOUNT, ELECTRICAL, CIRCULAR, HIGH DENSITY, QUICK DISCONNECT, ENVIRONMENT RESISTING, INDIVIDUAL RELEASE, CRIMP TYPE CONTACTS (CLASS A, F, AND W - SERIES 3)

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS81511/41A
  • Current
Published 2020-03-19 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
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Color-Coded Incandescent Flange Base T-1 and T-1 3/4 Lamps for Voltage Identification

A-20A Crew Station Lighting
  • Aerospace Standard
  • AS4156C
  • Current
Published 2020-03-12 by SAE International in United States
This document specifies that black is the only color that can be used for the insulator at the bottom of the base of T-1 and T-1 ¾ Flanged Base lamps.
Annotation ability available
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CONTACTS, PIN, CRIMP REMOVABLE ,CONNECTORS, ELECTRICAL, CIRCULAR, MINIATURE, COMPOSITE, HIGH DENSITY, QUICK COUPLING, ENVIRONMENT RESISTANT, (SERIES B)

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS29600/24A
  • Current
Published 2020-03-09 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
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CONTACTS, SOCKET, CRIMP REMOVABLE, CONNECTORS, ELECTRICAL, CIRCULAR, MINIATURE, COMPOSITE, HIGH DENSITY, QUICK COUPLING, ENVIRONMENT RESISTANT, (FOR AS29600 SERIES B)

AE-8C1 Connectors Committee
  • Aerospace Standard
  • AS29600/23A
  • Current
Published 2020-03-09 by SAE International in United States
No Abstract Available.
This content contains downloadable datasets
Annotation ability available
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Specification Definitions - Hydraulic Backhoes

MTC1, Loaders, Crawlers, Scrapers and Mounted Attachments
  • Ground Vehicle Standard
  • J49_202003
  • Current
Published 2020-03-04 by SAE International in United States
This standard applies to hydraulic backhoes which have no more than 190 degrees of rotational swing and are mounted on wheeled tractors and crawler tractors.
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Annotation ability available