7-34 Motor recommendation ?

[idahoderrick]

I bought a Singer 7-34 at an auction and I have no idea what type or size of motor that I should hook up to it.

I bought this machine for my brother that does leather work. He has never had a machine that is this heavy duty and also has no idea about the motor.

[Northmount]

@idahoderrick Moved yourpost to leather sewing machines.  You'll get responses here.

Tom

[kgg]

I would put a servo motor with the highest HP that I could find. I would be looking at digital speed controller rather then the turn the knob speed controller having the lowest start-up speed and the highest startup torque. Some servo motors claim to have a start-up speed of 100rpm, others at 300rpm and others don't readily list it. Finding the start-up torque may also take some research as suppliers generally don't list the value but a general rule of thumb would be the higher the HP the greater the available torque. I would also prefer a brush-less servo motor over one with brushes. Most suppliers rate their motors in watts (1HP is approximately 745 watts).

My top two choices if I were in the market for another servo motor would be:

1. Brushless Digital 12-coil DC Servo motor Sewquiet 6000sm from Reliable (550 watt, costing $169 US or $232 Canadian)

2. Brushless Digital ??-coil D.C. Servo Motor from the Leather Machine Company (600watt, cost ??)

kgg

 

 

[nylonRigging]

I bet you did Not pick that up and carry by yourself to your truck ...LOL . Did you get a table set-up with it also ? or just the Head by itself ?

Class 7's are a BadAss , ever see one sew through silver dollar ?

.

[idahoderrick]

2 hours ago, kgg said:

I would put a servo motor with the highest HP that I could find. I would be looking at digital speed controller rather then the turn the knob speed controller having the lowest start-up speed and the highest startup torque. Some servo motors claim to have a start-up speed of 100rpm, others at 300rpm and others don't readily list it. Finding the start-up torque may also take some research as suppliers generally don't list the value but a general rule of thumb would be the higher the HP the greater the available torque. I would also prefer a brush-less servo motor over one with brushes. Most suppliers rate their motors in watts (1HP is approximately 745 watts).

My top two choices if I were in the market for another servo motor would be:

1. Brushless Digital 12-coil DC Servo motor Sewquiet 6000sm from Reliable (550 watt, costing $169 US or $232 Canadian)

2. Brushless Digital ??-coil D.C. Servo Motor from the Leather Machine Company (600watt, cost ??) 

kgg

 

 

Thank you

[idahoderrick]

nylonRigging:

A funny story about moving this thing... A very well built and very nice gentleman picked it up and handled it like it was a tinker toy and I thought to my self "it must not be that heavy", I on the other hand could not even get it more than 2 inches off of the ground by myself. I used an engine cherry picker to get it out of the truck and into my shop. I got the head only with this machine.

[idahoderrick]

5 hours ago, Northmount said:

@idahoderrick Moved yourpost to leather sewing machines.  You'll get responses here.

Tom

Thank you

[Gregg From Keystone Sewing]

I would use a 3/4HP motor, good common example is a Consew NS-614 (P24) CLICK HERE for their product page.

The 6000SM is a motor we work with, and NOT a good fit for this machine, at all in this case for this machine.

Edited May 21, 2019 by Gregg From Keystone Sewing
info@keysew.com

[tofu]

4 hours ago, Gregg From Keystone Sewing said:

I would use a 3/4HP motor, good common example is a Consew NS-614 (P24) CLICK HERE for their product page.

The 6000SM is a motor we work with, and NOT a good fit for this machine, at all in this case for this machine.

well that's a different approach -- recommending a clutch over a servo.

 

As far as servos, i tried the Rex version of the family sew that everyone recommends from Toledo -- didn't like it (thank god for amazon return).

Bought the sewquiet and it's perfect.  Better pedal control and i can do stitch by stitch without messing with additional pulleys.

Considered the consew because i like having separate controller for top mounting, but the reviews i read on it were pretty bad, so I didn't bother.

 

Not sure why everyone jumps on the family sew bandwagon, but to each his or her own. Maybe it varies based on machine.

[CowboyBob]

1 hour ago, tofu said:

well that's a different approach -- recommending a clutch over a servo.

 

As far as servos, i tried the Rex version of the family sew that everyone recommends from Toledo -- didn't like it (thank god for amazon return).

Bought the sewquiet and it's perfect.  Better pedal control and i can do stitch by stitch without messing with additional pulleys.

Considered the consew because i like having separate controller for top mounting, but the reviews i read on it were pretty bad, so I didn't bother.

 

Not sure why everyone jumps on the family sew bandwagon, but to each his or her own. Maybe it varies based on machine. 

FWIW ,the one we sell runs slower due to the 2" pulley Everyone else including Consew sells them w/a 3" pulley.