| Author |
 Topic  |
|
|
n/a
DELETED (Inactive)
3 Posts |
 Posted - Jul 03 2004 : 12:45:12 AM
|
Aaron, I saw your scooter and decided that I'd like to do the same with junk parts that I already have lying around. The motor that I'd like to use is an old circular saw motor. I don't know much about the electrics. Should I mount a DC to AC converter in order to power the motor or will it run just from using 12 volt batteries? Thanks for the help.
(Edit....Move to Vehicles)
Edited by - Aaron Cake on Jul 03 2004 10:44:51 AM |
|
|
cirvin
Nobel Prize Winner
USA
1542 Posts |
Posted - Jul 03 2004 : 09:13:00 AM
|
Try and get a motor that needs less voltage. Your motor might turn over at 12 volts, but it wont have any speed. You coud try the inverter, but that just complicates the design.
http://daxter12.topcities.com |
 |
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jul 03 2004 : 10:48:52 AM
|
I would suggest finding a nice 24V or 36V motor. Circular saw motors are 120V motors, and VERY powerful. You'll need at least 60V to get any power out of it. So you're looking at 5 12V batteries. Controlling it is also an issue....You'll need to start looking into golf-cart type controllers (Curtis makes them, several hundred dollars). 60V is also into the danger zone. You could actually electrocute yourself.
Using an inverter is not an option. A unit large enough would cost a few hundred dollars, you'll need a massive 12V battery to provide the current, and you still need to figure out some way to control the speed of the motor.
Thus, a 24V or 36V motor is the best choice.
|
|
|
|
n/a
DELETED (Inactive)
3 Posts |
Posted - Jul 03 2004 : 4:41:42 PM
|
Thanks for the suggestions. I'm looking on ebay for an appropriate motor. Just as a curiosity, though, can you run an ac motor off dc? I did go ahead and hook up that old circular saw to a regulated DC power supply that I have - 60 volts - and there was no response from the motor? I don't know what do you think?
|
|
|
|
Aaron Cake
Administrator
Canada
6718 Posts |
Posted - Jul 04 2004 : 10:41:07 AM
|
Brushed AC motors will run from both AC and DC. Induction motors will only operate from AC.
If you are going to run an AC motor on DC, be sure NOT to use the switch on the tool. It is only rated for AC. If it is used to switch DC, it will either weld closed or wear out very quickly due to the arcing.
As for why your motor didn't work, who knows. Perhaps your supply cannot supply the 10A + surge current needed to get the motor going.
|
|
|
| |
Topic |
|
circular saw motor for scooter
