Go Back  Quiltingboard Forums > Main > For Vintage & Antique Machine Enthusiasts
Singer Potted Motor converted to a treadle, HC or motor  TUTORIAL >

Singer Potted Motor converted to a treadle, HC or motor TUTORIAL

Singer Potted Motor converted to a treadle, HC or motor TUTORIAL

Old 04-08-2014, 07:46 PM
  #41  
Super Member
 
Join Date: Aug 2013
Location: Springfield Oregon
Posts: 1,481
Default

I pulled the needle plate screws on a 201, and I get #8-40.
Here is a picture of some tools used with threading.
[ATTACH=CONFIG]470785[/ATTACH] From the left is a die handle, for cutting or cleaning (chasing) threads for a screw. 2nd is a die for the same. 3rd and above it are tap holders, which hold the 2 packaged items. The red/white package is an 8-32 tap, pretty common, except on sewing machines. The yellow/green package is a #1 easy out, which needs a hole at least 5/64" (between 1/16 and 3/32") The tip of it would probably hit the interfering part before it gained any purchase on the bushing. Between the 2 packages is a thread guage, this one for metric fasteners. Taps and easy outs are a couple bucks a piece. The thread guage, maybe $7 or 10?
Machine screws have a defined outside diameter, what mostly varies is the number of threads per inch. (TPI) So a 6-32 screw has an outside diameter of (6 x .019) + .062= .176". It has 32 threads (teeth) per inch.
Hope this wasn't too boring!
So now chasing threads has another meaning for ya
Attached Thumbnails 2014-04-08-20.22.10.jpg  

Last edited by oldsewnsew; 04-08-2014 at 07:48 PM. Reason: hindsight is 20-20
oldsewnsew is offline  
Old 04-09-2014, 05:22 AM
  #42  
Super Member
 
Join Date: Aug 2013
Location: Springfield Oregon
Posts: 1,481
Default Correction to #41 oops

"So a 6-32 screw has an outside diameter of (6 x .019) + .062= .176" "
Actually it's .062 + (.013 x screw number)= diameter on the outside of the screw threads. Hence
one of many online screw size charts
http://lelandpowell.com/metric.htm
I'm all through now, the audience has left the room, except for one old guy sleeping in the front row...
oldsewnsew is offline  
Old 04-09-2014, 07:21 AM
  #43  
Super Member
 
Join Date: Feb 2012
Posts: 8,091
Default

Originally Posted by oldsewnsew View Post
"So a 6-32 screw has an outside diameter of (6 x .019) + .062= .176" "
Actually it's .062 + (.013 x screw number)= diameter on the outside of the screw threads. Hence
one of many online screw size charts
http://lelandpowell.com/metric.htm
I'm all through now, the audience has left the room, except for one old guy sleeping in the front row...
Hey ..... I resemble that remark!

Thanks for the info on how to figure out the screw sizes. I always wondered how they did that.


Joe
J Miller is offline  
Old 04-09-2014, 09:02 AM
  #44  
Power Poster
Thread Starter
 
Join Date: Mar 2011
Location: Somewhere
Posts: 15,507
Default

I'm thinking we need screws 101 or something professor - I'm not ready for the advanced class.
miriam is offline  
Old 04-09-2014, 11:31 AM
  #45  
Super Member
 
Join Date: Aug 2013
Location: Springfield Oregon
Posts: 1,481
Default

well after years of screwing around, it's left me a little nuts!
oldsewnsew is offline  
Old 04-09-2014, 11:52 PM
  #46  
Power Poster
Thread Starter
 
Join Date: Mar 2011
Location: Somewhere
Posts: 15,507
Default

Originally Posted by ThayerRags View Post
Thanks Miriam. If it came off of a Singer 66, it must be a 9-spoke. I donít think they ever put a 6-spoke balance wheel on the model 66.

The reason that I asked, is because the 6-spoke wheels that Iíve come up with all seemed to have a deeper hub than the 9-spoke. I think that my 6-spoke wheels have all come from model 27 machines.

Iíve not ever converted a potted motor machine (201-2 or 15-91) to handcrank, and I wondered if the collars on them would require the deeper hub for the Stop Motion Washer to fit correctly. Apparently not.

Iím getting overrun with 15-91s (theyíre very common here - I have 10 and have turned down others), nearly all of them need re-wired, and I might want to begin converting some to hand or treadle use.

CD in Oklahoma
It is hard to find a bobbin winder/belt guard that fits with the deeper hub hand wheels. Most of the time they want to hit the wrong place.
miriam is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Dedemac
For Vintage & Antique Machine Enthusiasts
5
01-17-2018 05:28 PM
Beautiful_Sound
For Vintage & Antique Machine Enthusiasts
10
10-30-2015 08:36 PM
bbsewbusy
For Vintage & Antique Machine Enthusiasts
5
04-19-2015 03:27 PM
ChattyKathy
For Vintage & Antique Machine Enthusiasts
3
03-16-2014 07:31 AM
vmaniqui
For Vintage & Antique Machine Enthusiasts
18
01-15-2014 12:30 PM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


FREE Quilting Newsletter