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#1
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Somewhat OT (I think) Electrical question
Though, this isn't specifically about "Home Repair" it is an item in the
home. I made a project for the wife which required the use of a sewing machine motor (but not the sewing machine) which has the speed control foot pedal. I want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds, as opposed to a 3-speed type. I tried a ceiling fan speed control which does contain the 3 speeds of high, medium and low, and it's not what I want. For starters, low is obviously too low since the motor only hums, medium appears to be OK speed wise but high is too fast. I want to provide the wife the option of variable speeds. Therefore, the big question is, doesn't anyone know if and/or what type of speed control I can connect with the motor? BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you |
#2
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Somewhat OT (I think) Electrical question
"Smitty Two" wrote in message news OK, humor me. Why can't you dismantle the foot pedal and use the speed control from it? The pedal is not a dial type. When viewing the inside, the pedal makes connects with layered contacts. In other words, as you push the pedal, it connects with one contact, then further push connects with another contact and so on as if stacking chips at the end of an arm. A dial controller has the contacts in a circumference and increases power as the dial increases. |
#3
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Somewhat OT (I think) Electrical question
"Tony Hwang" wrote in message ... Thank you Hi, Depends on motor design ie. number or amature poles, windings, etc. If my wife wants something like that, I'd just experiment with electronic rheostat until I hit the jack pot to her satisfaction. That could get costly if I don't find the correct one soon enough. |
#4
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Somewhat OT (I think) Electrical question
Justin Time wrote: Though, this isn't specifically about "Home Repair" it is an item in the home. I made a project for the wife which required the use of a sewing machine motor (but not the sewing machine) which has the speed control foot pedal. I want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds, as opposed to a 3-speed type. I tried a ceiling fan speed control which does contain the 3 speeds of high, medium and low, and it's not what I want. For starters, low is obviously too low since the motor only hums, medium appears to be OK speed wise but high is too fast. I want to provide the wife the option of variable speeds. Therefore, the big question is, doesn't anyone know if and/or what type of speed control I can connect with the motor? BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you Hi, Depends on motor design ie. number or amature poles, windings, etc. If my wife wants something like that, I'd just experiment with electronic rheostat until I hit the jack pot to her satisfaction. |
#5
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Somewhat OT (I think) Electrical question
In article ,
"Justin Time" wrote: Though, this isn't specifically about "Home Repair" it is an item in the home. I made a project for the wife which required the use of a sewing machine motor (but not the sewing machine) which has the speed control foot pedal. I want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds, as opposed to a 3-speed type. I tried a ceiling fan speed control which does contain the 3 speeds of high, medium and low, and it's not what I want. For starters, low is obviously too low since the motor only hums, medium appears to be OK speed wise but high is too fast. I want to provide the wife the option of variable speeds. Therefore, the big question is, doesn't anyone know if and/or what type of speed control I can connect with the motor? BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you OK, humor me. Why can't you dismantle the foot pedal and use the speed control from it? |
#6
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Somewhat OT (I think) Electrical question
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#7
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Somewhat OT (I think) Electrical question
"Justin Time" wrote in message ... Though, this isn't specifically about "Home Repair" it is an item in the home. I made a project for the wife which required the use of a sewing machine motor (but not the sewing machine) which has the speed control foot pedal. I want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds, as opposed to a 3-speed type. I tried a ceiling fan speed control which does contain the 3 speeds of high, medium and low, and it's not what I want. For starters, low is obviously too low since the motor only hums, medium appears to be OK speed wise but high is too fast. I want to provide the wife the option of variable speeds. Therefore, the big question is, doesn't anyone know if and/or what type of speed control I can connect with the motor? BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you Go to eBay and search for variac or powerstat. There are all sorts of configurations. You need to compare the current/power ratings of the sewing machine and select one of the smaller units. I have a big variac but it is not up for sale as I can still find some use for it. Charlie |
#8
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Somewhat OT (I think) Electrical question
On Tue, 9 Aug 2011 09:33:10 -0400, "Justin Time" wrote:
"Tony Hwang" wrote in message ... Thank you Hi, Depends on motor design ie. number or amature poles, windings, etc. If my wife wants something like that, I'd just experiment with electronic rheostat until I hit the jack pot to her satisfaction. That could get costly if I don't find the correct one soon enough. Sewing machine motors are universal motors. A router speed control will work perfectly - you really want one that current (and counter EMF) senses and PWM controls the speed. A simple rheostat type control will cause overshot on startup and speed decrease under load. |
#9
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Somewhat OT (I think) Electrical question
On Tue, 9 Aug 2011 21:49:51 -0400, "Charlie"
wrote: "Justin Time" wrote in message .. . Though, this isn't specifically about "Home Repair" it is an item in the home. I made a project for the wife which required the use of a sewing machine motor (but not the sewing machine) which has the speed control foot pedal. I want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds, as opposed to a 3-speed type. I tried a ceiling fan speed control which does contain the 3 speeds of high, medium and low, and it's not what I want. For starters, low is obviously too low since the motor only hums, medium appears to be OK speed wise but high is too fast. I want to provide the wife the option of variable speeds. Therefore, the big question is, doesn't anyone know if and/or what type of speed control I can connect with the motor? BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you Go to eBay and search for variac or powerstat. There are all sorts of configurations. You need to compare the current/power ratings of the sewing machine and select one of the smaller units. I have a big variac but it is not up for sale as I can still find some use for it. Charlie And unlike a rheostat, a Variac can be grossly oversized and still do the job |
#10
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Somewhat OT (I think) Electrical question
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#11
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Somewhat OT (I think) Electrical question
On Tue, 9 Aug 2011 08:44:12 -0400, Justin Time wrote:
want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds,......... BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you I have used these on several motors: http://www.platt.com/product.aspx?zpid=393347 |
#12
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Somewhat OT (I think) Electrical question
wrote in message ... On Tue, 9 Aug 2011 21:49:51 -0400, "Charlie" wrote: "Justin Time" wrote in message . .. Though, this isn't specifically about "Home Repair" it is an item in the home. I made a project for the wife which required the use of a sewing machine motor (but not the sewing machine) which has the speed control foot pedal. I want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds, as opposed to a 3-speed type. I tried a ceiling fan speed control which does contain the 3 speeds of high, medium and low, and it's not what I want. For starters, low is obviously too low since the motor only hums, medium appears to be OK speed wise but high is too fast. I want to provide the wife the option of variable speeds. Therefore, the big question is, doesn't anyone know if and/or what type of speed control I can connect with the motor? BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you Go to eBay and search for variac or powerstat. There are all sorts of configurations. You need to compare the current/power ratings of the sewing machine and select one of the smaller units. I have a big variac but it is not up for sale as I can still find some use for it. Charlie And unlike a rheostat, a Variac can be grossly oversized and still do the job One consideration, other than physical size and weight, is cost. |
#13
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Somewhat OT (I think) Electrical question
On Aug 10, 1:06*pm, "Charlie" wrote:
wrote in message ... On Tue, 9 Aug 2011 21:49:51 -0400, "Charlie" wrote: "Justin Time" wrote in message . .. Though, this isn't specifically about "Home Repair" it is an item in the home. I made a project for the wife which required the use of a sewing machine motor (but not the sewing machine) which has the speed control foot pedal. I want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds, as opposed to a 3-speed type. I tried a ceiling fan speed control which does contain the 3 speeds of high, medium and low, and it's not what I want. For starters, low is obviously too low since the motor only hums, medium appears to be OK speed wise but high is too fast. I want to provide the wife the option of variable speeds. Therefore, the big question is, doesn't anyone know if and/or what type of speed control I can connect with the motor? BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you Go to eBay and search for variac or powerstat. There are all sorts of configurations. You need to compare the current/power ratings of the sewing machine and select one of the smaller units. I have a big variac but it is not up for sale as I can still find some use for it. Charlie And unlike a rheostat, a Variac can be grossly oversized and still do the job One consideration, other than physical size and weight, is cost.- Hide quoted text - - Show quoted text - Try a heavy-duty light dimmer, they work quite well. Get one rated for as much wattage as the max motor wattage, probably a 200W dimmer would give you some margin for a 150 Watt motor., |
#14
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Somewhat OT (I think) Electrical question
On Wed, 10 Aug 2011 09:35:20 -0400, "Justin Time"
wrote: "hr(bob) " wrote in message news:003a4fe0-cc6a-4806-a649- Try a heavy-duty light dimmer, they work quite well. Get one rated for as much wattage as the max motor wattage, probably a 200W dimmer would give you some margin for a 150 Watt motor., After doing a Google search and reading a bit of info, that's exactly what I decided to do. By chance, we had an extra dimmer from work and I brought it home, connected it and it works very well. If using a dimmer, you want one designed for dimming low voltage lighting with magnetic transformers - not electronic. These have the circuitry to handle the high voltage spikes caused by the circuit opening (or commutate on the rizing edge instead of the faling) Standard (decent quality) dimmers are 600 watt |
#15
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Somewhat OT (I think) Electrical question
In article ,
"Justin Time" wrote: By chance, we had an extra dimmer from work Yes, it's amazing how much "extra" stuff is just lying around at work. Might as well take it home. |
#16
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Somewhat OT (I think) Electrical question
"Justin Time" wrote in message ... Though, this isn't specifically about "Home Repair" it is an item in the home. I made a project for the wife which required the use of a sewing machine motor (but not the sewing machine) which has the speed control foot pedal. I want to remove the foot pedal and connect a dial speed controller, preferably one with variable speeds, as opposed to a 3-speed type. I tried a ceiling fan speed control which does contain the 3 speeds of high, medium and low, and it's not what I want. For starters, low is obviously too low since the motor only hums, medium appears to be OK speed wise but high is too fast. I want to provide the wife the option of variable speeds. Therefore, the big question is, doesn't anyone know if and/or what type of speed control I can connect with the motor? BTW, if it helps, according to the label on the motor, it's a 110v, 150watt and 1.3 amps. Thank you The normal sewing machine speed control has a stack of carbon disks. Control is effectedby squeezing them together. (reduces resistance.) |
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