Pfaff 335: Advice Appreciated

[dikman]

Well, they both use the same phrase, clearance under the foot, so the logical assumption is that they're referring to the same operation.If you're right then it means that using the hand lift doubles the clearance which seems a bit high to me (none of my machines have that sort of difference).

Just curious.

[Kohlrausch]

6 hours ago, dikman said:

Those manuals are contradictory, looking at max. clearance under the foot one says 7mm the other says 14mm!

That's old casting vs. new casting. 

Greets

Ralf C.

[DrmCa]

One is hand lift, the other is foot pedal lift.

You get more lift with the foot pedal.

My 335 is old casting and it takes up to #22 needle. Tex 70 is definitely a go, even Tex 90 works. Not sure what that is in ## but both are smaller than #138.

Edited September 17, 2018 by DrmCa

[dikman]

9 hours ago, Kohlrausch said:

That's old casting vs. new casting. 

Greets

Ralf C.

Ralf, if you're right (and I think you might be) then it means the dealer is sending out incorrect information about the machine he's selling, which shows a lack of knowledge on his part. I wonder what else he doesn't know.

[Uwe]

I think the 7mm figure is referring to the maximum walking height of the feet as they walk (called "top feed stroke" in the specs below.) The Service manual shows this:

 

The old casting of the Pfaff 335 was built with four different foot lift heights (maximum clearance under the feet): H1, H2, H3, and H4 .

I don't see any such differentiation for the new casting of the Paff 335. They list just one figure for maximum clearance under the foot: 14mm (https://www.pfaff-industrial.com/en/portfolio/sewing-machines/cylinder-arm/pfaff335)

.

 

 

Edited September 18, 2018 by Uwe

[dikman]

Doesn't that mean the 7mm is effectively the working clearance under the feet?

[jimi]

That is what my machine gets, about 7mm max under the foot for working, if you go thicker than that then the tension spring starts to open. just as if you were lifting your foot up to release the tension, same idea.

I think your machine lift had something similar Dikman?? it was raised higher??

Edited September 18, 2018 by jimi

[Uwe]

8 hours ago, dikman said:

Doesn't that mean the 7mm is effectively the working clearance under the feet?

No, it means the machine can walk with 7mm high steps on top of the material, no matter how thick the material is. In theory, if you put 14mm of felt material under the feet, the feet should still be able to walk with 7mm high steps on top of the 14mm of material. 

[Uwe]

8 hours ago, dikman said:

Doesn't that mean the 7mm is effectively the working clearance under the feet?

We need somebody who has an actual machine to check if the machine can still make 7mm tall steps even if you put 12mm of material under the feet. Often machines can make full size steps on top of the maximum material they can take under feet.

[coryleif]

Here ya go.