Small Issues With New Pfaff 335

[MissionVao]

I managed to get a new Pfaff 335 straight from the factory, with a servo motor, couldn't be happier, sews like a beast.

But there's two issues.

First one is my lack of experience. The manual says I shouldn't be using a needle larger than 69 (or 100 metric) but I doubt it's anything more than a recommendation since the machine can sew through 1cm of vegtan easy. I tried the 69 polyester thread but when I sew 10oz leather straps and belts it's just too thin to look nice.

So I took a look at some guides and saw that for that particular oz. (3-4mm) I should use thread size 138-277. Is it safe to use on my machine? Or in other words, would you use any needle you can properly mount or just follow the manual and stick to 69?

Saw the same Pfaff 335 in Hermes video and they used at least 2x thicker thread on their watch strap...

Anyway, more important issue, my servo.

I always read the manual so I'm certain I've used it correctly.

Problem is, when I choose the program that should be the slowest one the machine runs like crazy.

So I thought maybe it's not the motor, maybe the pedal is too sensitive when it comes to switching between the 'programmed' and 'full speed' modes (press lightly for the former, press all the way for latter).

So I always end up sewing by pressing and lifting my foot completely, which is obviously annoying and wrong.

Is there a guide for adjusting the pedal sensitivity or something else that might help?

Edited September 28, 2015 by MissionVao

[DrmCa]

It takes up to 22 size needle.

10 oz leather is too thick I am afraid.

As to the servo, can you post a picture of the control panel so that the members would know what beast you are dealing with?

[MissionVao]

Thank you for the info about needle size, it means a lot. I have to wonder why the manual would say 100 is the max when you say it's 140.

I was sewing through 2 layers of 8oz leather with ease so I would never guess that 10oz is too much.

The servo is Ho Hsing 600W, g60-1-00-220 to be exact (3000rpm max).

Manual for G series: http://www.globalsew.com/data/upload/files/gseriesmanual.pdf

So I set it to P1 and set 10spm and it doesn't seem to limit the speed in any way.

So I'm guessing it's the pedal 'sensitivity'.

Edited September 28, 2015 by MissionVao

[Hockeymender]

I have run 160 needles in my 335's many times (currently run that size in my 335 set as a binder). The largest thread that I have found that works well is 138. Above that, things start to get a little dicey.

[coryleif]

I'm wondering if older 335s are set up for heavier sewing. When I got my new 335G (the boxy one, now branded Mauser) I put a 125/20 needle in it and it was catching on the hook a bit. The manual definitely says 100/18 is the max. Though, maybe I can move the hook over a little...

[MissionVao]

Mine doesn't say Mauser anywhere.

I've ordered lots of different needles (up to Tex 210/Singer 23) and threads so I'll post update when those arrive

Edited October 4, 2015 by MissionVao

[Wizcrafts]

Hello MissionVao;

I want to clear up some nomenclature confusion for you so we are all on the same page.

Thread sizes used in these machines vary, but bonded thread is a commonly rated item. Bonded thread, whether nylon or polyester, usually comes in these sizes. The thread sizes shown have Bonded size/Tex size and the common needle sizes are listed in .eu sizes, which is what you will be ordering in Serbia.

1. #33/T30 thread, using #70 or #80 needles (very thin thread and needles);
2. #46/T45 (#80 or #90 needle), for sewing shoe designs, or stitching shoe uppers;
3. #69/T70 (#100 or #110 needles) The standard is the upholstery trade and best for thin leather projects (garments, zippers, wallets);
4. #92/T90 (#120 or #125 needles) The first light-heavy thread, beyond most home sewing machine capability;
5. T105 thread (#130 needles) This is often sold in large spools of polyester thread for top stitching denim garments;
6. #138/T135 (#140 or #160 needles). This may be too large for your machine's hook, unless it can be adjusted for more clearance.

[MissionVao]

Thank you, Wizcrafts but I'm sorry you went through the trouble of writing a long post when there are tons of nice clear charts for needle and thread sizing out there on the 'net Didn't know there was any confusion regarding those on this topic. I try to use thread sizes when I speak about threads and Singer size when I speak about needles but sometimes I switch when I see other people ignore it.

I saw a couple of members did tiny modifications on their machines so they can use slightly bigger needles so I'll look into that if the need arises.

But I'd feel more comfortable hand-sewing really thick pieces since I don't do mass production anyway plus it's fun. And I need an excuse to finally make a sewing pony :D