What is the effect of changing the axis location on rowing oarlocks?

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Discussion Overview

The discussion centers around the design and mechanics of rowing oarlocks, specifically the effects of changing the axis location of the oar pivot point. Participants explore the implications of this design change on the work required by rowers, considering the mechanics of levers in this context.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • Rick introduces a new oarlock design where the middle of the oar shaft is aligned with the pivot pin, questioning the effect of this change on the work required by the rower.
  • Rick seeks clarification on whether it is easier to pull on the end of a lever when the fulcrum is stationary compared to when it moves in an arc around the fulcrum.
  • A participant shares a link to a research document that may provide relevant information, although it is noted that it does not directly answer Rick's specific question.
  • Rick acknowledges the shared document and expresses appreciation for the information, despite it not addressing his query directly.

Areas of Agreement / Disagreement

The discussion does not appear to reach a consensus, as participants are still exploring the implications of the design change and the mechanics involved.

Contextual Notes

There are unresolved aspects regarding the mechanics of levers and the specific effects of the oarlock design change on rowing efficiency, which depend on various assumptions about lever mechanics.

rickhoran
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Traditional oarlocks used in compeitive rowing hold the oar next to the oar pin about which the oar pivots such that the middle of the oar shaft is about 2 inches away from the center of the pin.

I am working on a new oarlock design where the middle of the oar shaft is inline (directly on top of) the pin about which it rotates.

My question is this... what effect does the change in axis locations (next to the pin vs. on the pin) have on the work required by the rower?

Note: Technically oars are considered a second order lever, although some people consider it a first order lever.

Thank you for your help!

Rick
 
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I probably didn't do a very good job of phrasing my question, because I know there are a lot of people out there smarter than me. Let me try again...

The question is this: is it easier to pull on the end of a lever when the fulcrum is pivoting on one point as opposed to traveling in an arc around the fulcurm?

Thanks in advance for your input!

Rick
 
Thank you Edward! Although this document did not answer my specific question, it is filled with some great information. Thank you for sharing it with me!

Rick
 

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