Friday, July 1, 2022

One Thing Leads To Another

Drill Press Update:

I guess one of the pluses of working on older equipment, besides the obvious quality of the components, is the fact there is always something else that needs attention.

Digging into the Atlas Workshop drill press has been nice.  It's a lightly used machine.  No appreciable wear on the spindle or the bushings.  For a 1940's era machine, that is almost unheard of.  But the quill return spring has been replaced.  And that is a not an insignificant issue.   Without that, the quill / spindle falls out.  Nothing is there to hold it back except the spring.  That won't do.

When I took it apart, I could see the spring was obviously a replacement.  The issue: I think it is proud of the normal position, and it won't allow the pins to lock in an adjustment.  Here is the relevant part of the diagram:

Mr spring is wider than the normal one, and there is a post with a mushroom top in the cast pot-metal cap that I guess held the old spring captive.  There is no way that  post was to hold to the old spring captive.  It was to hold the spring into the slot cut in the pinon shaft.  And it's too long to allow the pins to seat where they belong with the oversize spring.  

 

pins at 3 and 9 o'clock

pins lock into the L shaped slots


The new one sits on top of the mushroom and is held too far out to allow the pins to fit in the L shaped grooves in the cap.  I'm studying this, will probably trim that mushroom off  enough to allow the spring to fit.  I don't see a down side to that right now, but I'm still thinking and studying. The adjustment with the cap allows you to set the return force on the quill.


 

Cap is 13/16 deep, post is 9/16 below cap edge, and the pins are 1/4 below cap edge.  So, the post/mushroom portion as to be .110" max length.  Lathe work required to get that to work with the .500" wide spring.    Then, it's reassembly and test out.  Oh, and I need to get a belt.

Wait just a doggone second!!!!  Thinking further, I'll reassemble and use a few spring pins and hold the spring away from the sides of the cap. If that clears the latch pins, I may make an insert for it to keep the spring from interfering with them.  I don't know if there would be enough spring to fit in the slot on the pinion shaft if I mill down the mushroom....  whew...  Pictures ARE worth a thousand words.

Lathe Update:

The KA5 contact block showed up.  And, just as I figured, the plunger is shorter.  So, a KA3 NC block can be shortened to become a KA5 late break NC block.  Good to know as I have a few 3's.  Install tonight after it cools down some.


I'm not as look as I dumb

Health Update:

Every heard of pleurisy?   Yeah, my pain scale is longer now than ever.  "On a scale of 1-10 how much pain are you experiencing?"  I figure pain causing imminent death is a 10.  After the for real sinus infection several years ago, my scale got adjusted.  After this bout of pleurisy....  Man, it hurt to be alive.  Not a fun few days there....  Better now.  Thank you God for that.

2 July marks the anniversary of my last day at work.  Not the retirement I was planning.  3 July marks the anniversary of the pneumonia.  I'm still here, though.  And I don't plan on going easy.  

Kind of funny in a way, that so much of what I read in the Bible is starting to be very evident now.  "Wars, rumors of wars.  Earthquakes in diverse places." 

2 Timothy 3:1-9

But understand this, that in the last days there will come times of difficulty.  For people will be lovers of self, lovers of money, proud, arrogant, abusive, disobedient to their parents, ungrateful, unholy,  heartless, unappeasable, slanderous, without self-control, brutal, not loving good, treacherous, reckless, swollen with conceit, lovers of pleasure rather than lovers of God,  having the appearance of godliness, but denying its power. Avoid such people.  For among them are those who creep into households and capture weak women, burdened with sins and led astray by various passions,  always learning and never able to arrive at a knowledge of the truth.  Just as Jannes and Jambres opposed Moses, so these men also oppose the truth, men corrupted in mind and disqualified regarding the faith.  But they will not get very far, for their folly will be plain to all, as was that of those two men.

Watch your topknot... I fully expect to see four riders sweeping through the streets any day now....

Saturday, June 25, 2022

Well, that's interesting...

 Ran a quickie speed test on it.  60 cps is the limit I have programmed in the VFD.  Max smoke.  Ran it in high range and got the following speeds with my handy dandy Stewart Warner speedarmature*.


 

Pot setting        Chuck RPM                                               

10                      sloooow

20                        100

30                        160

40                        230

50                        300

60                        375

70                        450

80                        510

90                        600                        

100                      600

 

Imma need to increase the max frequency of this here VFD slightly.  I'm also gonna hafta enlarge the scale and the knob.  Fun times.

 Didja know they have things like this on the web??  It's from here


I also found they make some inkjet sticker stock.  This just gets better and better.... From here


And I have knobs.  Lots of knobs.... from my radio daze.  The project is coming along nicely now.  Man what a ride.


*In Longview Texas there was a shop that advertised car repairs.  One of the specialties was "speedarmature" repair.  I don't ever remember seeing a car there in the four years I was in college.  I went by that spot multiple times a week...  Funny what you remember.