Electric motors and motorcycles battry

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Discussion Overview

The discussion revolves around the feasibility of modifying an electric motor to operate using a motorcycle battery as a power supply, specifically for a grass trimmer. Participants explore technical aspects, including voltage requirements and connections.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant inquires about the possibility of using a motorcycle battery to power an electric motor for a grass trimmer.
  • Another participant notes that a starter motor from a motorcycle can operate off a motorcycle battery and suggests clarifying the voltage and amp-hour rating of the battery, as well as the specifications of the grass trimmer motor.
  • A participant indicates an intention to design a grass trimmer that would require a voltage of approximately 100-120 volts and seeks guidance on connecting a battery to the motor.
  • One reply challenges the feasibility of achieving 120 volts from a motorcycle battery, suggesting a reconsideration of the voltage numbers.
  • A later reply suggests using an inverter to convert the 12v DC from the motorcycle battery to AC for the 120v trimmer, while also noting that battery discharge duration will vary based on several factors.

Areas of Agreement / Disagreement

Participants express differing views on the voltage requirements and the practicality of using a motorcycle battery for the intended application. There is no consensus on the best approach to connect the battery to the motor or the feasibility of achieving the desired voltage.

Contextual Notes

Participants have not fully defined the specifications of the grass trimmer motor or clarified the assumptions regarding voltage and power requirements. The discussion includes unresolved questions about the connection methods and the implications of using an inverter.

snaz_86
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can u modify an electric motor so that it uses a motorcycle battery as a power supply?how?

and used for a grass trimmer...
 
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Well a starter motor from a motorcycle will run quite happily off a motorcycle battery!

Perhaps you need to pin your question down a bit more. What voltage is your motorcycle battery? What amp-hour rating does it have? What voltage is your grass trimmer motor supposed to run off? What power is it rated at? What are you actually trying to do?
 
im trying to design a grass trimmer using a battery as a power supply...voltage probably 100 - 120v..tha main thing is how to connect a battery to the motor
 
You're not going to get 120 volts from a motorcycle battery. You may want to rethink your numbers.
 
snaz_86 said:
im trying to design a grass trimmer using a battery as a power supply...voltage probably 100 - 120v..tha main thing is how to connect a battery to the motor

If you want to run your 120v AC trimmer off a motorcycle battery you can pick up an inverter at an auto parts store.
The inverter converts the 12v DC to AC.
How long it will run before the battery gets discharged depends on a lot of factors.

Or something like this may be of interest
http://www.epinions.com/content_106898820740
 

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