Which servo motor should I buy in Australia?

[Carrie88]

This is a VERY delayed response, but I just wanted to finish this thread by adding what I ended up with. I bought the Ho Hsing motor that I linked to originally. 

http://www.sewingmachinesaustralia.com.au/shop/buy-accessories/motors/ho-hsing-g60-servo-motor.html

I am very happy with it, it was very easy to install, the hardest part was the weight of the sewing machine and the weight of the original motor. The instruction sheet is a little quirky, you kind of have to look very closely for how to operate it and change the speed. I would recommend this motor to anyone who was in the same boat as me, aka giant beastly industrial machine that you can't control :).

One thing I will point out, having just had my machine serviced by a professional - I had the speed control set too low. Apparently this was creating far to much tension in the machine and as a result my thread kept snapping within a few stitches. I now have the speed sitting on 20 which is slow enough to control but allows the machine to run better. Apparently having it set at one or two was likened to driving up the blue mountains in first gear...

[dikman]

Good to hear that you're all sorted out, Carrie (although I find the last paragraph slightly perplexing).

[Carrie88]

Well I wasn't actually there when the machine was serviced, my partner was so I got the info second hand. The serviceman said that by having my servo motor set only to level 1, which is the slowest it can go, the machine was then putting too much tension on the thread and it kept snapping. By turning the machine up a few levels, this has reduced the tension load placed on the thread by the machine. 

Now as a relative newbie I don't know whether this is poppycock or not  I do know that my machine is running better now. I gather you may be thinking that it shouldn't matter what speed the servo motor is set at?

[Bert51]

I am like Brian, I have never seem problems from sewing to slow, anything heavy I always sew slowly.

Bert.

[dikman]

Carrie, I just looked at the manual for your servo and it has more settings than most that I've seen. Most of them you probably won't use, but generally there is some interaction between things like the max speed that is set and the startup speed setting, it can be trial and error to find out what works best. The main thing is that if it's working for you that's all that matters.

My machines have speed reducers, which also affects the speed settings used and I generally have the servos set for pretty low max speed because that is all I need.

Yes, I still don't understand that statement, but I guess it doesn't matter - it's working and you're happily sewing away!