29k15 shuttle gear remanufacturing

[29k15engine]

Just threaded up the machine and it stiches perfectly. Fine through 2 pieces of 1mm leather and 6 peices of 1mm leather !

[29k15engine]

After much work these are the DXF files required to cut correctly profiled shuttle gears for the 29k15 Singer Patcher, although I have extensively tested these on my machine I take no responsibility that these fir yours, they are however ovet 6 month work and are as accurate as i can make.

These can be cut with an EDM wire erosion machine from a suitable steel (Hardened tool Steel)

I will provide side profile drawings for the depth to cut the shuttle gear after the EDM has cut the gear profile.

I have tweaked the shuttle so it does not need to be reamed out to correct pinion size.

thickness for pieces before being cut on EDM, surface grind to these sizes,

1. ideal shuttle5-25mmdia.DXF           Description:- pinion gear 6.68mm
2. ideal rack.DXF                                     Description:- rack 3.8mm
3. ideal plate.DXF                                    Description:-Locating plate 2.73mm thick

ideal shuttle5-25mmdia.DXF ideal rack.DXF ideal plate.DXF

Edited November 27, 2021 by 29k15engine

[DrmCa]

Just one question: why did you not have them make the whole length of the rack?

[29k15engine]

Hi thanks for the reply, Due to these machines not having an adjustment for shuttle timing the length of the full rack would be subtly different from machine to machine after 100 so years.

due to this I have worked on an adjustable rack (see earlier posts) which would allow timing adjustment equivalent to the later machines with a eccentric bush.

If you look at earlier posts you will find an old 60s catalogue picture from italy which shows the replacement rack end as a weld on item, so without the adjustable rack the end can be replaced on an existing machine rack (with care)

 

Edited November 27, 2021 by 29k15engine

[chrisash]

First class work, I am sure many will appreciate your hard work

[MikeRock]

Solid Concepts, in Michigan, could print these.

[29k15engine]

Here are the files in their stl format for 3d printing,

the rack extended for welding is a bit longer to ease welding onto the original or new rack rod.(also in dwx)

 

 

ideal plate.STL ideal rack extended for welding.STL ideal rack.STL ideal shuttle5-25mmdia.STL ideal rack extended for welding.DXF

Edited November 28, 2021 by 29k15engine

[Wizcrafts]

4 hours ago, 29k15engine said:

Here are the files in their stl format for 3d printing,

the rack extended for welding is a bit longer to ease welding onto the original or new rack rod.(also in dwx)

 

 

ideal plate.STL 33.87 kB · 0 downloads ideal rack extended for welding.STL 63.95 kB · 0 downloads ideal rack.STL 63.95 kB · 0 downloads ideal shuttle5-25mmdia.STL 65.51 kB · 0 downloads ideal rack extended for welding.DXF 41.76 kB · 0 downloads

Could you please also post these files in the 3D and Laser Printers section of the LWN?

[Melville]

On 6/30/2021 at 1:14 AM, 29k15engine said:

Just found from a supplier I can get parts

8608 Following Pinion for both 29k1 but also following pinions for 29k15 and the like.

8599 Small rack

plus

8600 long rack!! which I may be able to be modified to fit a 29k15 with an adjustable rack rod.

These are all new parts.

Will keep you informed on these as it is another direction to get these parts working the older machines.

Here is a picture from the supplier of part 8600 in stock. Hi who and where is the Supplier please    rdonald8@tpg.com.au

 

 

[john franklin]

Hi could I ask the name of the company in Italy where you got the parts please

Kind regards John

johnagfranklin@hotmail.co.uk