Why not 2 wire brushless motors?
07-14-2007, 06:55 PM
#1
Why not 2 wire brushless motors?
I know 2 wire brushless motors exist. Why not in the RC market? My assumption is that they would be a direct replacement for a brushed motor, meaning you could use a brushed ESC to power them. I believe the electronics to run the 2 wire brushless motor is built in to the motor. I am NO motor expert! So I was wonder if a motor expert on this thread could help me understand this a bit more. Thanks!
07-14-2007, 08:02 PM
#2
Originally Posted by PitNamedGordie
I know 2 wire brushless motors exist. Why not in the RC market? My assumption is that they would be a direct replacement for a brushed motor, meaning you could use a brushed ESC to power them. I believe the electronics to run the 2 wire brushless motor is built in to the motor. I am NO motor expert! So I was wonder if a motor expert on this thread could help me understand this a bit more. Thanks!
07-14-2007, 08:34 PM
#4
Originally Posted by vtl1180ny
HUH???? You can't run a brushless motor off a brushed ESC no matter how many wires there were... They work completely different....
See below...
http://news.thomasnet.com/fullstory/451064/1620
Release date: April 23, 2004
New 12 Volt, 2-Wire, Brushless DC Motor
Servo Magnetics Inc. - Canoga Park, CA; A new compact low inertia, 12 volt, 2-wire brushless DC motor has been designed to facilitate the simplicity of drop-in replacement of a conventional brush motor where long life and quiet operation are essential. The motor is shown with double-ended shafts however; single-ended shaft configurations are also available. The motor is designed to sustain applications where the motor will see high-vibration loads such as cyclical shaft loading conditions. The low voltage design is well suited for portable or battery operated applications. At 12 volts, this compact 31mm diameter by 62mm long, design can produce up to 20 watts. A variety of electrical and mechanical options are available including windings for specific power requirements, as well as custom mounting configurations.
And...
http://www.telcointercon.com/telcomo...d_products.htm
2-Wire Brushless
This 2-wire brushless motor has built-in electronics that give the advantage of a compact package size while offering quiet, efficient and smooth operation. The 2-Wire brushless motor can easily upgrade your brushed motor applications by simply changing just the motor. You minimize the weight and complexity of the cabling and eliminate any confusion about motor phase connections.
There are more examples out there...I am just curious
07-14-2007, 08:43 PM
#5
Tech Rookie
"2-Wire Brushless
This 2-wire brushless motor has built-in electronics that give the advantage of a compact package size while offering quiet, efficient and smooth operation."
Built in electronics = it has it's own speed control. Same thing as a 12v DC computer fan. They have been a long time before 2004.
This 2-wire brushless motor has built-in electronics that give the advantage of a compact package size while offering quiet, efficient and smooth operation."
Built in electronics = it has it's own speed control. Same thing as a 12v DC computer fan. They have been a long time before 2004.
07-14-2007, 08:48 PM
#6
Originally Posted by PitNamedGordie
In non RC applications there have been brushless motors designed as direct replacements for brushed motors. I was curious as to why this has not been tried for RC if possible.
See below...
http://news.thomasnet.com/fullstory/451064/1620
Release date: April 23, 2004
New 12 Volt, 2-Wire, Brushless DC Motor
Servo Magnetics Inc. - Canoga Park, CA; A new compact low inertia, 12 volt, 2-wire brushless DC motor has been designed to facilitate the simplicity of drop-in replacement of a conventional brush motor where long life and quiet operation are essential. The motor is shown with double-ended shafts however; single-ended shaft configurations are also available. The motor is designed to sustain applications where the motor will see high-vibration loads such as cyclical shaft loading conditions. The low voltage design is well suited for portable or battery operated applications. At 12 volts, this compact 31mm diameter by 62mm long, design can produce up to 20 watts. A variety of electrical and mechanical options are available including windings for specific power requirements, as well as custom mounting configurations.
And...
http://www.telcointercon.com/telcomo...d_products.htm
2-Wire Brushless
This 2-wire brushless motor has built-in electronics that give the advantage of a compact package size while offering quiet, efficient and smooth operation. The 2-Wire brushless motor can easily upgrade your brushed motor applications by simply changing just the motor. You minimize the weight and complexity of the cabling and eliminate any confusion about motor phase connections.
There are more examples out there...I am just curious
See below...
http://news.thomasnet.com/fullstory/451064/1620
Release date: April 23, 2004
New 12 Volt, 2-Wire, Brushless DC Motor
Servo Magnetics Inc. - Canoga Park, CA; A new compact low inertia, 12 volt, 2-wire brushless DC motor has been designed to facilitate the simplicity of drop-in replacement of a conventional brush motor where long life and quiet operation are essential. The motor is shown with double-ended shafts however; single-ended shaft configurations are also available. The motor is designed to sustain applications where the motor will see high-vibration loads such as cyclical shaft loading conditions. The low voltage design is well suited for portable or battery operated applications. At 12 volts, this compact 31mm diameter by 62mm long, design can produce up to 20 watts. A variety of electrical and mechanical options are available including windings for specific power requirements, as well as custom mounting configurations.
And...
http://www.telcointercon.com/telcomo...d_products.htm
2-Wire Brushless
This 2-wire brushless motor has built-in electronics that give the advantage of a compact package size while offering quiet, efficient and smooth operation. The 2-Wire brushless motor can easily upgrade your brushed motor applications by simply changing just the motor. You minimize the weight and complexity of the cabling and eliminate any confusion about motor phase connections.
There are more examples out there...I am just curious
07-14-2007, 08:48 PM
#7
Originally Posted by jonferran
"2-Wire Brushless
This 2-wire brushless motor has built-in electronics that give the advantage of a compact package size while offering quiet, efficient and smooth operation."
Built in electronics = it has it's own speed control. Same thing as a 12v DC computer fan. They have been a long time before 2004.
This 2-wire brushless motor has built-in electronics that give the advantage of a compact package size while offering quiet, efficient and smooth operation."
Built in electronics = it has it's own speed control. Same thing as a 12v DC computer fan. They have been a long time before 2004.
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