Can low Resistance affect the torque output of an electrical motor

Click For Summary

Discussion Overview

The discussion centers around the relationship between electrical resistance and torque output in electric motors, particularly in the context of a project involving motorized Rollerblade wheels. Participants explore the factors influencing motor size and torque requirements for accelerating a specific weight to a target speed.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions whether resistance (measured in ohms) affects the maximum torque output of an electric motor, considering factors like motor size and current.
  • Another participant suggests that resistance should not be a major concern, except for potential thermal issues.
  • A later reply encourages looking into existing electric skateboards that might meet the specifications, implying that practical examples could provide insights.

Areas of Agreement / Disagreement

There is no clear consensus on the impact of resistance on torque output, as participants express differing views on its significance and relevance to motor size considerations.

Contextual Notes

Participants do not fully explore the implications of thermal considerations related to resistance, nor do they clarify the extent to which current and motor size limit torque output.

Who May Find This Useful

Individuals interested in electric motor applications, particularly in personal transportation projects, may find this discussion relevant.

dajordanator
I've had a side project in mind for a while involving motorized Rollerblade wheels, however I need to figure out a motor size that would give me the needed torque to actually accelerate 250lbs up to 25mph. I realize even a 5hp electric motor is large but I was wondering if ohms have any affect on the potential torque maximum of the engine or if it winds up being limited more due to size and current, rather than the ease of the electricity's flow.
 
Engineering news on Phys.org
Resistance in the electrics shouldn't be a major concern (apart from thermal considerations maybe).
 
  • Like
Likes   Reactions: dajordanator
mfb said:
Resistance in the electrics shouldn't be a major concern (apart from thermal considerations maybe).
Ok, I just didn't know if I should invest a lot of time into looking into that as a potential way of cutting motor size or not. thank you
 
dajordanator said:
I've had a side project in mind for a while involving motorized Rollerblade wheels, however I need to figure out a motor size that would give me the needed torque to actually accelerate 250lbs up to 25mph. I realize even a 5hp electric motor is large but I was wondering if ohms have any affect on the potential torque maximum of the engine or if it winds up being limited more due to size and current, rather than the ease of the electricity's flow.
Have you looked at electric skateboards that come close to meeting your specs of speed? That would be the best place to start.
 

Similar threads

  • · Replies 8 ·
Replies
8
Views
3K
Replies
14
Views
3K
Replies
34
Views
5K
Replies
5
Views
3K
  • · Replies 16 ·
Replies
16
Views
3K
  • · Replies 11 ·
Replies
11
Views
3K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 9 ·
Replies
9
Views
4K
  • · Replies 5 ·
Replies
5
Views
12K
  • · Replies 3 ·
Replies
3
Views
2K