Mrstsb

So is there a way of making a H3 into a H4 machine?

Great, Thanks for all the information

Thank you Bob for this table. Would it not be suitable for sewing leather then?

Would anyone be able to tell me what these letters mean on a Pfaff 145 sewing machine-- 145-40B H3 SN

Great, I think that's the conclusion I've come to as well.

Thanks for the detailed information regarding the motors. In the UK they are probably all imported from China and rebadged so I don't think I'll get the answers about coils etc. The machines I'm wanting to use them on are an old singer walking foot and a Karpet King carpet over edger

No idea what I will be sewing at my stage of learning, just having a play with different materials at the moment. As to the speed, they are both quoting 200spm to 5000spm for the 550w and 3500spm for the 750w which doesn't make sense to me

In the UK there seems to be a choice of 2 sizes/power of servo motors. One is a 550w and the other is a 750w. Obviously there is a slight difference in price between the two but would there be any reason to have one over the other? Would the 550w one be more than adequate for sewing leather or for the sake of £30 would you go for the more powerful one?

I'd like to keep things simply as I'm really just learning how to sew. Have seen one for a good price but just want to put a servo motor on it as I don't know if all the fancy bits work

This might be a strange question but could the JUKI LU-1510-7 be "de-modenised i.e. could all the pneumatic stuff, automatic thread trimming stuff, automatic foot lifter stuff be removed and just make it into good solid old fashioned sewing machine you could plug in at home without the need for a compressor to make it work.

Ah that makes sense now. So if you were to buy a new machine, who are the main players now in the industrial walking foot sewing machine market. I'd guess it would be durkopp adler. I'd bet they wouldn't last 40 years, especially if they are full of electronics

After picking up a Singer 211g256, I thought I'd get in touch with Singer and ask if they had any information or service manuals available to download regarding the said machine, seeing that it's over 40years old. Well I've just received a reply, saying, basically manuals aren't for end users and are strictly for Singer service technicians and dealers only and suggested finding a local one to take my machine to. Thank goodness for forums like this

Well there is no chance of me ever sewing at that speed so I can safely get rid of the felt, but thanks for the information. I'd be worried that the oil would stain the material you are sewing

Thank you for the link. Could I ask- what is the point of the "oiling felt thread guide"

Thank you for that. I've watched some of Uwe's videos before and have found them very helpful and informative