Advise for a new sewing machin

[aal]

Hi,

 

I am from Switzerland, Geneva (the city of Elna, so to speak) and I found your website recently, which I found very intersesting and helpfull.

So few years ago, I bought a second hand Adler 105-64. I'm still pretty please with it, regardless some issues. But today, because of this, I'm thinking of buying a new one.
So, my question is: can she work properly or I'll better get a new one?
I am not a professional, I have never seen a pro sewing machin working, and I did not have an oppportunity to test one. I simply don't know what is possible, what to expect to a new pro machine, so I am asking to get some advise from you.

But first, few words about me.
Firstly I am doing some work like tarpauline bag, back bag, hand bag and so on. To get an idea, look at "Freitag bag". I'm using from light tarp to heavy tarp (400mg/m2 to 650mg/m2). Secondly, I'm doing some clothing, sort of cosplay costumes, anything that I find interesting.
My problem is sometimes it doesn't do what I want! For no reason it misses a spot/stich and when I check its already to late to correct. Then, when I do a backward stich, it is difficult to hold the line. I really need to be carreful, slowly, with the hand wheel. The worst thing with the backward, I could have multiple stichs/spot issue, very anoying!
I want a machine that can sew multiple layer of heavy tarp with a heavy thread, but I also want to be able to change to sew with a medium thread, easily.

So... I have some thought
This Adler is a perfect machin, I just need to do some maintenance, and the problems will be fixed.
Its an old one, I have to deal with it or get something else.
Buying a servo electical motor will help, it will improve my work.
Buy a new one, which one? Two options available for me: Pfaff 355 or Adler 669.

Lastly, it is also a matter of money, space etc...

Not easy for me to decide, so any help or ideas are welcome.

 

Good day to you.

aal

 

[Constabulary]

105-64 are excellent machines in general. Maybe you can shot a video and load it up to Youtube and post the link here. Visualizing often is better that explaining.

Regarding different thread sizes - I would recommend using a 2nd or even 3rd hook. You adjust either one to the thread size you prefer and change them out as needed and then you only have to adjust the top tension. Should not be too difficult. The 105 Machines are using the same hook as the Singer 45K or Chinese made GA5-1.

https://www.ebay.com/itm/114221141266

Don´t know how good or bad the above hook is but I never had problems with the parts from this seller.

[aal]

Hi Constabulay,

 

Video, good idea, I'll do that.

 

For the hook, you're saying I buy a 2nd hook, then I'll adjust the hook tension for the thread size I need, correct?

 

What about a servo motor? Is it a good idea to investment in one?