Finding the Angle of Lap, Tight Side Tension, & Belts for a Pulley Belt Drive

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Discussion Overview

The discussion revolves around the calculations and considerations involved in a belt drive system with two pulleys, specifically focusing on the angle of lap, tight side tension, and the number of belts required. The context includes practical applications and references to resources for further understanding.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • One participant expresses uncertainty about the appropriate equations for calculating the angle of lap, tight side tension, and the number of belts required.
  • Another participant requests more information regarding the specific application of the belt drive system to provide better assistance.
  • A link to an online resource is shared, which contains information on V-belts and related calculations.
  • Participants discuss the usefulness of the shared link and mention having additional resources, such as manufacturer books on belt selection.
  • A participant notes a specific section in a MathCAD package that details the process of selecting a V-belt, including various factors and types of belts.

Areas of Agreement / Disagreement

There is no clear consensus on the specific equations needed, as participants are seeking more information and discussing resources rather than reaching an agreement on the calculations.

Contextual Notes

The discussion lacks specific details about the application of the belt drive, which may affect the calculations and recommendations. Additionally, the reliance on external resources suggests that participants may have varying levels of familiarity with the topic.

Who May Find This Useful

Individuals interested in mechanical design, specifically those working with belt drive systems or seeking resources for belt selection and calculations.

loz3002
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to be honest i don't know if this is the right place to be but i got a question,
if i have a belt drive consisting of two pulleys what is the equation to find the angle of lap,the tight side tension and number of belts required? I've completely forgot how to do this stuff
 
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oh come on you know you want to help me, please?
 
Not enough info. What is the application?
 
http://www.mech.uwa.edu.au/DANotes/V-belts/home.html
 
Nice link Fred. I have belt selection books from 2 manufacturers but this online reference is handy.
 
I don't get a chance to use belt drives very often. When I do, I like to take a look at that link. Glad you like it.
 
FredGarvin said:
I don't get a chance to use belt drives very often. When I do, I like to take a look at that link. Glad you like it.

Hey Fred, just thought I'd let you know about something I found while poking around in the Machine Design and Analysis package for MathCAD-

Machine Design and Analysis: Section 1.13- Selecting a V-Belt

It runs you through the entire process laid out in that website link, from horsepower ratings, to Service factors, etc. Interestingly it also has sections on selecting leather, rubber, or multiple V-belts; along with all of that is timing belts, wire-rope drives, and of course gear trains, bearings and shafts, springs, ... Holy moley it's got a lot in there.
 
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