Help with calculation for dynamometer build?

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Discussion Overview

The discussion revolves around calculating the torque that couplings and belts must manage in a dynamometer build. Participants are exploring the relationship between torque, power, and the specifications of the components involved, including rollers, couplings, and belts.

Discussion Character

  • Technical explanation
  • Homework-related
  • Debate/contested

Main Points Raised

  • Martin B. Jensen seeks assistance in calculating the torque transferred to couplings and belts in a dynamometer setup, providing dimensions and maximum torque values.
  • Some participants suggest using online calculators for belts and pulleys, indicating that power is a key factor in determining the requirements for couplings and belts.
  • One participant emphasizes that the couplings and belt must handle 1000 HP, noting that limits for RPM and torque vary by manufacturer and type.
  • Martin expresses a desire to focus specifically on torque values, indicating that horsepower is not a priority for his calculations.
  • Another participant requests clarification on what is meant by "manage," suggesting that more information or a drawing could aid in understanding the requirements.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the specific torque values needed for the couplings and belts. There are differing views on the importance of horsepower versus torque in this context, and clarity on the requirements remains unresolved.

Contextual Notes

Limitations include the lack of detailed specifications for the couplings and belts, as well as the need for further clarification on the system's design and requirements.

BJ3882
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I'm looking for someone who can help me calculate the torque there will be transferred to my couplings between the rollers and to my belt connecting the 2 set of rollers.
I have drawings of it all including inventor pro 2011 drawings/file of it all putted together without the belt and couplings.
The size of my rollers are 315 mm in diameter and the max torque the car will have is 1000 NM, so how much is my couplings and belt supposed to manage ?

Hope someone can help me, i have a few more questions that i will post afterwards :)

Thanks a lot.

Regards Martin B. Jensen / Denmark
 
Engineering news on Phys.org
Lots of online calculators for belts & pulleys; This one seems relevant to your case given the little information you gave.
 
BJ3882 said:
Just let me know what info you will need.

The first thing will be to know what you are actually looking for. The best that someone can tell you based on you original question, i.e.:

BJ3882 said:
so how much is my couplings and belt supposed to manage ?

is to tell you that what will be transferred through your belt is power. So your couplings and belt must be able to handle 1000 hp. They usually also have some upper limits for rpm and torque. But those limits differ from pulley & belt types and from one manufacturers to another.
 
I'm looking to find the torque numbers my belt and couplings are supposed to manage.
The hp doesn't matter and the rpms are covered only the torque i need to know if possible?
 

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