Tuesday, May 27, 2025

Anti-jackknife module

  We have designed a system to quickly restore alignment of a sideward-skidding semi-truck tractor with its trajactory.  The controling-components are contained in a module mounted on the steering column.  The system activates brake-releasing valves in the front-brake lines if the tractor is skidding sideward and is steered in the direction of skid.  This action allows the front wheels to roll freely if and when they are aimed in the alignment-restoring direction -- this being the drivers instinctive response to sideward skidding.  The brakes respond to the brake peddle normally when sideward skidding stops or steering ceases to be in the direction of skid.

The control module is equipped with a steering-direction sensor, a lateral-acceleration sensor and a relay.  The sensors pass current from the brake-light circuit to the relay trigger when inertia and steering are both rightward or when inertia and steering are both leftward.  The relay when so triggered passes current from the key-on circuit to both effector valves (left front and right front).  The activated valves block their respective brake hoses and deflate respective front-brake chambers.


We welcome inquiries from possible manufacturers at:

Ingrid Regen: ingrid@dimp.com

Sam Regen:  bogus_id@comcast.net

Brian Hoffman: brian.hoffman.123@gmail.com


Interested parties may download our 3-d printer files shown below.  


In addition to the printable plastic parts, a module contains four 10-mm cylindrical neodymium magnets oriented in the same direction, one 10-mm spherical neodymium magnet, two 4-mm diameter mercury tilt sensors, two 60-mm-long spirit levels, one 1-inch square (cubic) relay HDR185, four 3-inch long 3/32-inch diameter copper-rods curved to a 60-mm diameter arc, four 2.5-inch 1/4-inch bolts, one 1-inch 1/4-inch bolt, nine 1/4-inch friction nuts, two hose clamps, a few dabs of glue.



 
The four 3-D-Printer Files
Click on .stl file name to download
 

              

Steering-direction Sensor

Lateral-acceleration Sensor

                                    

Sunday, May 4, 2025

For love of dog

We have designed a device that greatly eases dog-toenail clipping.  Specifically, it is a thimble 100 that fits over the shear 22 and adjacent parts of a Resco clipper 20.  The thimble is secured by a tiny dab of gum 24 under the rear edge.



The thimble helps guide a toenail into the shear and limits the length of toenail sheared, thereby avoiding tedium, stress, pain and bleeding.  Mass producing the thimble seemed impractical, so we are providing it as a 3-D-print file and asking that users add $2.00 to our PayPal account for each successful printing.  FYI: it took us about two years to optimize outer and inner dimensions of the clipper guide.


To download the 3-D-printer file, 
click this link.


If satisfied, pay $2.00 to PayPal account of xmsdavidr@gmail.com.


The printer file includes eight versions of the thimble.  A set of four that fit the clipper in one orientation and a set of four more that fit the clipper in the opposite orientation.  Each set provides a choice of four clip lenths: 3 mm, 4 mm, 5 mm and 6 mm.




We now present the clipper guide in a website:

Monday, March 17, 2025

Links to songbook files


To open a file:

1) Drag highlight any link  (https://mail  . . .  &zw)    

2) Right click the highlighted link,   

3) Left click the  Go To Https:// . . .   


Gospel Supplement: Lyrics & Chords for Pickers -- cover pages

https://mail.google.com/mail/u/0?ui=2&ik=bd1bb5ce56&attid=0.1&permmsgid=msg-a:r-1113988960564737917&th=192f8e4bbfdd2e8f&view=att&disp=inline&realattid=192f8e41c41f2ce22ec1&zw

Gosspel Supplement: Lyrics & Chords for Pickers -- inside pages

https://mail.google.com/mail/u/0?ui=2&ik=bd1bb5ce56&attid=0.4&permmsgid=msg-a:r-1113988960564737917&th=192f8e4bbfdd2e8f&view=att&disp=inline&realattid=192f8e41c41b287f0794&zw


Gospel Supplement: SATB Scores for singers and keyboard -- cover pages

https://mail.google.com/mail/u/0?ui=2&ik=bd1bb5ce56&attid=0.5&permmsgid=msg-a:r-1113988960564737917&th=192f8e4bbfdd2e8f&view=att&disp=inline&realattid=192f8e41c41c1c3816d5&zw

Gospel Supplement: SATB Scores for Singers & Keyboard -- inside pages

https://mail.google.com/mail/u/0?ui=2&ik=bd1bb5ce56&attid=0.6&permmsgid=msg-a:r-1113988960564737917&th=192f8e4bbfdd2e8f&view=att&disp=inline&realattid=192f8e41c41ec7581be6&zw

Country Pathos/Country Soul -- cover pages

https://mail.google.com/mail/u/0?ui=2&ik=bd1bb5ce56&attid=0.3&permmsgid=msg-a:r-1113988960564737917&th=192f8e4bbfdd2e8f&view=att&disp=inline&realattid=192f8e41c41658c5f573&zw

Country Pathos/Country Soul -- inside pages

https://mail.google.com/mail/u/0?ui=2&ik=bd1bb5ce56&attid=0.2&permmsgid=msg-a:r-1113988960564737917&th=192f8e4bbfdd2e8f&view=att&disp=inline&realattid=192f8e41c41f8f2e3ca2&zw

Sunday, March 16, 2025

Future of manned space flight


  In my opinion there should be very little manned-space-flight future –  for several reasons.

The scientific value of sending people beyond our atmosphere was gained some years ago.  It’s time to cease our manned space program.

We will never colonize another planet.  We will never send people to another star system.  We will never create a self-sustaining, habitable satellite.

We know all we need to know about the physiological and psychological effects of weightlessness – most of which were predicted.  We have devised methods of slowing and limiting those effects – methods for which there is no compelling need.

Our expertise in space flight can remain sharp with more practical programs like GPS and meteorology, and scientific programs like geology and astronomy – and military programs like ICBMs and scuds.  So the space-flight technology will advance after manned space flight ceases.  One might imagine a time when ICBMs can be abolished.

Earth’s resources are limited.  It is unethical for our generation to consume far more than needed. 

Monday, February 10, 2025

Political preference

 

Here is why I prefer the Democratic Party:

Suffering matters.  More suffering is bad.  Less suffering is good.  Nothing else matters.

Overpopulation increases suffering.  Republicans did the gag rule, preventing international family planning.

Resource depletion increases suffering.  Republicans belittle efforts to slow consumption of nonrenewable resources.  Drill baby drill!

Climate change increases suffering.  Republicans oppose efforts to limit global warming – Paris Accords.

Ignorance increases suffering.  Republican media spread many lies every day, every hour.  Few if any scholars or experts appear in Republican broadcasts.

Hate increases suffering.  Listen to Republican pundits a few hours, eg Mark Levin, Sean Hannity.

Poverty increases suffering.  Republican tax policies favoring  the wealthy have decimated the middle class.

Injustice increases suffering.  Democrats are more hospitable to social justice.


Thursday, January 30, 2025

It seems to me that:

 

1.  Our society is embracing technologies that will diminish total human satisfaction.
https://www.youtube.com/watch?v=Mh6iuXmJ6uM


2.  Several financial services unjustly transfer wealth from ordinary people to plutocrats.


3.  The dollar could be preserved by judicious taxation of total wealth (realized and unrealized).


4.  Republicans Made America Greedy Again.  We now leave food rotting in fields and in shipping containers while brown children starve.



Thursday, November 14, 2024

What if we were ethical?


By “we” I mean my tribes, kind, ilk and generation: American, white, Christian, male, middle class, contemporary.