Servo Choices

[hidepounder]

I put a servo on my 205/370 Adler and I really like it. It's not perfect.....it bolted right into the old mount.....but the controls are all facing away from me and that's a real pain. But having the ability to slow it to a crawl is nice. The motor must be on to adjust it, but it doesn't have to be in motion. I'd do it again in a flash!

Bobby

[Leather Guru]

Hello everybody ---- I'm having a hard time understanding what you guys mean by servo motor and especially about changing the speed on the motor .

Aren't the speeds to be found in the position of your foot pedal ( the farther you push it the faster the speed ) ? And also , don't these motors have a synchroniser on the fly wheel that you can adjust for the needle positioning system . When I push on the pedal and immediately release it the needle goes in to the preferred down position .

When I push with my heel the needle goes to the up position and all the speeds are to be found in the foot pedal . That box you see in the photo is in fact a computer the you can program all sorts of different parameters .

[wolfe9]

The motor everyone is talking about is a replacement motor ,there are many different kinds and sizes on the market . they work much like a variable speed drill but you can also set the maximum speed , so yes speed is still controlled by the pedal but it gives you total control compared to a clutch motor .

I think the pics you posted are of a high tech servo ( Im sure someone will correct me if Im wrong ) motor with more programable options .

Something I don't think anyone has mentioned is that the Sewpro that Bob is selling has a built in gear reduction which many don't have .

Hello everybody ---- I'm having a hard time understanding what you guys mean by servo motor and especially about changing the speed on the motor .

Aren't the speeds to be found in the position of your foot pedal ( the farther you push it the faster the speed ) ? And also , don't these motors have a synchroniser on the fly wheel that you can adjust for the needle positioning system . When I push on the pedal and immediately release it the needle goes in to the preferred down position .

When I push with my heel the needle goes to the up position and all the speeds are to be found in the foot pedal . That box you see in the photo is in fact a computer the you can program all sorts of different parameters .

[Gregg From Keystone Sewing]

Hello everybody ---- I'm having a hard time understanding what you guys mean by servo motor and especially about changing the speed on the motor .

Aren't the speeds to be found in the position of your foot pedal ( the farther you push it the faster the speed ) ? And also , don't these motors have a synchronizer on the fly wheel that you can adjust for the needle positioning system . When I push on the pedal and immediately release it the needle goes in to the preferred down position .

When I push with my heel the needle goes to the up position and all the speeds are to be found in the foot pedal . That box you see in the photo is in fact a computer the you can program all sorts of different parameters .

I can type about this subject all afternoon, but the gist of it is that you are correct, most high end motors, say $800 plus range have a control box that the user can use for increased functions such as needle positoner, auto back tack, auto foot lift, needle cooler, all kinds of things.

Today, I'll say there is a new class of motor, say sub $200 range, that has become very popular the past few years, and for good reason. Servos are quiet, energy efficient. better low end speed control, good (not usually better than standard clutch) low end torque. Some in the range even have needle positon function. Sub $200 motors are not always the end all be all, but they are very often a great choice depending on the application. I test EVERY servo motor I can get my hands on, and always try to be as informative as I can. I sell a wide variety, but really only recommend a few.

[MartyS]

I sell a wide variety, but really only recommend a few.

Hi Greg, Which few are you recommending. Thanks Marty

[Gregg From Keystone Sewing]

Hi Greg, Which few are you recommending. Thanks Marty

I don't like posting links to my webpage, but your asking, so you can see all the motors I sell here; Industrial Sewing Servo Motors

Two of the more popular models I sell are the Sew Green FL-550 and Family FESM-550N, can't go wrong with either.

[CustomDoug]

That SewPro 500gr uses only 300watts of power... so that's not even 1/2 hp, right ? Or what HP rating is it? Also, why would I choose a 3/4 hp servo over a 1/2 hp servo? Will the 1/2 hp motor not have enough torq to consistantly pierce extra thick leather layers (over 3/4") ?

Edited September 29, 2011 by CustomDoug

[Wizcrafts]

That SewPro 500gr uses only 300watts of power... so that's not even 1/2 hp, right ? Or what HP rating is it? Also, why would I choose a 3/4 hp servo over a 1/2 hp servo? Will the 1/2 hp motor not have enough torq to consistantly pierce extra thick leather layers (over 3/4") ?

The SewPro 500GR is not a direct drive 300 watt motor. It has built in 3:1 gear reduction, which it outputs this to a 2" pulley. So, when it is drawing its full 300 watts, it is producing triple the torque of the native motor. It will without a doubt out-twist a 1/2 HP clutch motor, which runs at 550 watts. My guess is that it produces about 3/4 HP, but there is nothing on the motor to indicate this.

I wouldn't want to be holding on to the pulley end of either motor as they start up!

The 441 type machines are equipped with 3/4 HP servo motors because most of them lack low speed torque.A 1/2 HP clutch motor, with a 2" pulley will power them, especially if they feed a speed reducer pulley. The reducer pulleys multiply the torque by three, but divide the top speed equally.

[philippe]

I have a new Cowboy cb4500 (441 clone) and a cowboy 797 (chandler 797 , etc. clone) both of which have the new servo motors. I too thought you had to be running the machine to adjust the speed ( they both have digital button controls), but after speaking to Ryan Neel he was very insistent at how dangerous this was, and he told me the proper method.: with the motor on but NOT running, hold the down arrow until S.0 appears, then push the up arrow (button) until S.3 appears, then down or up to adjust your speed, the 441 motor displays in 100's while the 797 displays in ten's, i.e. 3800 or 38 rpm. Hope this helps.

[CowboyBob]

CustomDoug,

We have put the 300w. Sewpro on our 3500 Cowboy & it works pretty good sewing to 3/4",BUT if your consistantly sewing 3/4"+ I would recommend getting a seperate reducer setup you'll have more torque & better speed control.We sell alot of the SewPros to people that have smaller machine like a 31-15,111W & etc they work great for these machines.

Bob