New to me Consew

[jrjr2u]

Been lurking for a while! Just brought home a nice 206RB-4 that has seen little use. It has  a 1/2hp 1750rpm clutch motor. I think I got a decent deal at $450. It is sewing great so far but it's pretty fast and hard to go slow with control. Read lots of info on optimizing these beast motors but in the end I think I am going to be best off to go the servo route.

Been looking at the Consew CSM1000 as the 3 piece design seems appealing with the control adjustments right out in front for easy access. I would like to achieve one stitch per second or perhaps a touch slower since I am pretty green at sewing and have the capability to go some faster as my skills improve. Been sewing entirely by hand till now.

Does anyone think this servo motor will achieve my goal or will I have to add a speed reducer as well? Thanks for any info!

[tofu]

The Consew servo was pretty much the only servo with suspiciously numerous negative reviews. 

 

I went with the sewquiet and get stitch by stitch on my 226 if I tap the pedal, but other people like the familysew. 

[jrjr2u]

29 minutes ago, tofu said:

The Consew servo was pretty much the only servo with suspiciously numerous negative reviews. 

 

I went with the sewquiet and get stitch by stitch on my 226 if I tap the pedal, but other people like the familysew. 

This is the one I am talking about.... reviews are pretty good I thought.
https://www.amazon.com/gp/product/B016EJ1WB6/ref=ox_sc_saved_title_4?smid=A2IGZ09LPUKLVH&psc=1

Anyone here with first hand experience?

 

Edited June 1, 2019 by jrjr2u

[dikman]

Looks to me like you got a great deal! Make sure you fit a 2" pulley on the motor (every bit helps) but a speed reducer will certainly help, as it will give increased torque at slow speeds. Best thing, however, is to just fit the servo first and try it as is, you might find it works fine for your needs.

[jrjr2u]

10 minutes ago, dikman said:

Looks to me like you got a great deal! Make sure you fit a 2" pulley on the motor (every bit helps) but a speed reducer will certainly help, as it will give increased torque at slow speeds. Best thing, however, is to just fit the servo first and try it as is, you might find it works fine for your needs.

Yes I have seen the smaller pulleys available for the Consew servos. Are pulleys universal in that they will fit any motor?

Question is which Servo motor to get.... I now see mixed reviews on this site after searching a bit.

Edit... Looks like the familysew from Toledo comes with a 2" pulley already installed. These seem to be preferred on this site too... may just run with that.

Edited June 1, 2019 by jrjr2u

[dikman]

If you ask a question about anything you will always get conflicting reviews. I didn't comment on which one to buy as I'm in Australia so the ones you mentioned aren't readily available. I bought 3 from Aliexpress (Skyrit brand) and one "locally" via ebay (a fairly generic type). No problems with any of them.

If you find a majority of opinions in favour of one brand then that's probably as good a basis as any on which to make a decision.

Pulleys - most servo shafts appear to be the same size, although there is the odd one that is different. Either buy the pulley from the same place as the motor or wait until you get it and measure the shaft to make sure.

Edited June 2, 2019 by dikman

[jrjr2u]

5 hours ago, dikman said:

If you ask a question about anything you will always get conflicting reviews. I didn't comment on which one to buy as I'm in Australia so the ones you mentioned aren't readily available. I bought 3 from Aliexpress (Skyrit brand) and one "locally" via ebay (a fairly generic type). No problems with any of them.

Different people have different opinions? Who would have thought! 
I have ruled out the csm1000 due to too many of said people that have erratic slow speed issues.
Looks like the familysew will be the one I get. Will give Bob a call Monday.
Thanks dikman! Appreciate the responses.

[Wizcrafts]

The only servo motors I would avoid are those with push button controls. The ones I have and had all started rotating at between 200 and 300 rpm and have no smooth transition from off to on. Conversely, most of the rotary switch and pot controlled motors do transition smoothly from zero on up. Unfortunately, those motors often suffer from low startup torque when the maximum speed has been turned way down. This calls for a 2:1 or 3:1 speed reducer to be thrown into the mix. Of course, the smallest possible motor pulley helps a lot.

Every sewing machine has a different size pulley in the flywheel/handwheel. Most are about 3 to 3.5 inches in diameter. Even a 2 inch motor pulley doesn't get you 2:1 reduction unless the machine pulley is at least 4 inches diameter (at the top, where the v-belt rides). Only the biggest and heaviest machines have 4 inches and larger pulleys. Shaft sizes are not universal, so a big hand/fly wheel from an old Singer may or may not fit on a newer or Chinese machine.

[Mark842]

Yep...what whiz said on the servo motors with a pot over buttons. The only exception I've had is the servo motor used on my Cobra 4 but that would be overkill for your application.

 

While your waiting for your new servo motor to arrive find a piece of foam and jam it under the foot pedal. Simple trick that helped me control my speeds with a clutch motor on a fast machine.

[Wizcrafts]

Personally speaking, I would prefer a clutch motor with a 2" pulley over a pushbutton servo motor that starts spinning at 300 rpm. One can learn to feather the clutch, but can never feather an on-off switch. I have clutch motors on a few machines and prefer them over any servo due to the nature of those machines.