The Gantry as a Drive for a Horizontal Bike: Initial Investigation of Rotary Work

The gantry drive (also, “the gantry”) is a mechanism that receives human-generated mechanical energy. The gantry used in a horizontal bike is a type of drive, and it is an alternative to a typical crankset. The purpose of this paper was to compare rotary work generated by the gantry and the crankset...

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Main Authors: Łukasz Bereś, Paweł Pyrzanowski
Format: Article
Language:English
Published: Wiley 2021-01-01
Series:Applied Bionics and Biomechanics
Online Access:http://dx.doi.org/10.1155/2021/6654377
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author Łukasz Bereś
Paweł Pyrzanowski
author_facet Łukasz Bereś
Paweł Pyrzanowski
author_sort Łukasz Bereś
collection DOAJ
description The gantry drive (also, “the gantry”) is a mechanism that receives human-generated mechanical energy. The gantry used in a horizontal bike is a type of drive, and it is an alternative to a typical crankset. The purpose of this paper was to compare rotary work generated by the gantry and the crankset. The comparative criterion for the gantry and the crankset was work in rotational motion. The comparison was based on static tests; forces put into both drive systems were measured, and the rotary work was mathematically calculated. The forces put into the drive systems were measured for a man 177 cm tall and of 76 kg mass. To facilitate analysis and tests, the first gear wheel to receive force from the toothed rack (the gantry drive) was assumed to have the same radius as the crank (the crankset drive). Mathematical analysis performed for one full rotation (360°) of the first gear wheel and crankset showed that rotary work for the gantry was 2117.31 J and for the crankset 804.81 J. Ultimately, it was shown that the gantry can better receive mechanical energy from the human than the crankset. This means that a human will be less tired when riding a horizontal bike equipped with the gantry compared to a horizontal bike equipped with the crankset; assuming that in both cases, the bike speed is the same. Additionally, thanks to the use of the gantry drive in a horizontal bike, it is possible to achieve higher speeds compared to a horizontal bike equipped with the crankset.
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spelling doaj-art-04ea9edf813a40d180ff973cdd01e3372025-02-03T01:28:24ZengWileyApplied Bionics and Biomechanics1176-23221754-21032021-01-01202110.1155/2021/66543776654377The Gantry as a Drive for a Horizontal Bike: Initial Investigation of Rotary WorkŁukasz Bereś0Paweł Pyrzanowski1Warsaw University of Technology, Institute of Aeronautics and Applied Mechanics, Nowowiejska str. 24, 00-665 Warsaw, PolandWarsaw University of Technology, Institute of Aeronautics and Applied Mechanics, Nowowiejska str. 24, 00-665 Warsaw, PolandThe gantry drive (also, “the gantry”) is a mechanism that receives human-generated mechanical energy. The gantry used in a horizontal bike is a type of drive, and it is an alternative to a typical crankset. The purpose of this paper was to compare rotary work generated by the gantry and the crankset. The comparative criterion for the gantry and the crankset was work in rotational motion. The comparison was based on static tests; forces put into both drive systems were measured, and the rotary work was mathematically calculated. The forces put into the drive systems were measured for a man 177 cm tall and of 76 kg mass. To facilitate analysis and tests, the first gear wheel to receive force from the toothed rack (the gantry drive) was assumed to have the same radius as the crank (the crankset drive). Mathematical analysis performed for one full rotation (360°) of the first gear wheel and crankset showed that rotary work for the gantry was 2117.31 J and for the crankset 804.81 J. Ultimately, it was shown that the gantry can better receive mechanical energy from the human than the crankset. This means that a human will be less tired when riding a horizontal bike equipped with the gantry compared to a horizontal bike equipped with the crankset; assuming that in both cases, the bike speed is the same. Additionally, thanks to the use of the gantry drive in a horizontal bike, it is possible to achieve higher speeds compared to a horizontal bike equipped with the crankset.http://dx.doi.org/10.1155/2021/6654377
spellingShingle Łukasz Bereś
Paweł Pyrzanowski
The Gantry as a Drive for a Horizontal Bike: Initial Investigation of Rotary Work
Applied Bionics and Biomechanics
title The Gantry as a Drive for a Horizontal Bike: Initial Investigation of Rotary Work
title_full The Gantry as a Drive for a Horizontal Bike: Initial Investigation of Rotary Work
title_fullStr The Gantry as a Drive for a Horizontal Bike: Initial Investigation of Rotary Work
title_full_unstemmed The Gantry as a Drive for a Horizontal Bike: Initial Investigation of Rotary Work
title_short The Gantry as a Drive for a Horizontal Bike: Initial Investigation of Rotary Work
title_sort gantry as a drive for a horizontal bike initial investigation of rotary work
url http://dx.doi.org/10.1155/2021/6654377
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