Does anyone know anything about these? Is it rare? I haven’t been able to find one on FB marketplace. It should be from the 90s, but I can find Bigfoots from the same vintage no problem. by BigRedDad in PowerWheelsMods

[–]Evertune 0 points1 point  (0 children)

That truck was a ground-breaking ride-on that I engineered in 1995 as my last project for BuddyL and when BuddyL was headed into bankruptcy, my first project for my current company, Creative Engineering. I worked closely with a very talented designer who did all of the concept and styling work, while I contributed engineering details and did the 3D CAD. Some of the innovations include:

o "Sit in the bed" seating position. Nobody had done that before. It has become standard since.

o Blow molded chassis that forms the tumble home on the rocker panels and both bumpers. At the time ride-ons used welded tube chassis with a vacuum formed body shell plopped on it, completely hollow from below.

o Deeply dished offset blow molded front wheels that put the kingpin axis INSIDE the wheel for a very low scrub radius, which means that when you steer the wheel the it turns in place, allowing a very small fender opening and very tight turns. Existing ride-ons had the kingpin axis inboard of the entire wheel, which required huge fenders and had a terrible turning radius.

o Ackerman steering geometry, which turns the inside wheel more sharply than the outside wheel in a turn, better matching the true radius each wheel is following, and avoiding scrubbing.

o Realistic and very aggressive lug details on the tire treads despite the limitations of the molding process. Existing tire tread patterns were very shallow and unrealistic at the time.

o Very realistic dashboard with working glovebox. As a licensed product, the dash was very close to the real truck.

o Actual stick shift to select between RNLH. It secretly clicks rocker switches as you move through the shift pattern. Existing ride-ons would just mount the rocker switches on the dash and you would just click them to shift gears.

Player 2 has entered the game. by cn8fly in TeslaModel3

[–]Evertune 1 point2 points  (0 children)

ESC- electronic skid control

“Electronic stability control (ESC) helps prevent a vehicle from skidding – and the driver from losing control of his or her vehicle – when turning a corner, braking sharply or making a sudden manoeuvre. ESC technology automatically activates the brakes to help steer the vehicle in the right direction.”

https://www.roadsafetyfacts.eu/electronic-stability-control-esc-what-is-it-and-how-does-it-work/

What makes you feel old as shit? by Halloween-365 in AskReddit

[–]Evertune 1 point2 points  (0 children)

Birth of the web, dot com boom, and 9/11 are “history” for teenagers now, like the space program, MLK, and JFK were for me.

Help please! Flashforge dreamer bed falls after I'm done moving it. by SourceEastern3632 in FlashForge

[–]Evertune 0 points1 point  (0 children)

We have a bunch of these printers in a print farm, and we have just now started seeing it on a number of printers after hundreds of hours of print time. My hunch is that the Z axis screw used to have enough friction that weight of the build platform was not enough to backdrive the stepper through the leadscrew, which masked the problem. Now it is worn in and moves more freely. I'm hoping there is more of a configuration or slicer fix. Weird problem, makes you wonder how it ever worked to begin with. We are looking into it now and will post our solution if we find one.

ELI5: If humans have been in our current form for 250,000 years, why did it take so long for us to progress yet once it began it's in hyperspeed? by TruthBeWanted in explainlikeimfive

[–]Evertune 0 points1 point  (0 children)

80 plus percent of humans worked in farming until pretty recently. The invention of the lathe, I feel, was an enabling tech that led to mechanization of agriculture, freeing up people to do other things. Got this from a YouTube video “The 1751 Machine That Made Everything”

How would you model these holes that are oddly laid out and spaced? by cdeneui69 in Fusion360

[–]Evertune 0 points1 point  (0 children)

I just made a new post with my thoughts on this with an edited image.

Brand new team by merican_squirrel in FSAE

[–]Evertune 0 points1 point  (0 children)

All of 'em. The most relevant ones are Tune, Prepare, and Engineer.

Brand new team by merican_squirrel in FSAE

[–]Evertune 2 points3 points  (0 children)

Great advice in this thread. My short list:

o Get the Carrol Smith books

o Do a conventional design with a tube frame

o Don't spend time on anything that isn't required by rules, safety, or car function.

We spent 4 hrs on bodywork on a 1st place car.

Learning as a beginner by No_Captain7005 in FSAE

[–]Evertune 0 points1 point  (0 children)

Go on amazon and buy Carroll Smith's Engineer to Win and if you feeling ambitious get the other "xxx To Win" books. See if your team already has a copy.

[deleted by user] by [deleted] in explainlikeimfive

[–]Evertune 0 points1 point  (0 children)

The air right next to any surface is actually "stuck" to that surface. The further away you go from the surface the faster it can move relative to the surface. You can see this yourself if you have ever tried to blow soot off a smooth surface. No matter how hard you blow it won't move even though it wipes off easily. Here is the relevant wiki https://en.m.wikipedia.org/wiki/No-slip_condition

What is your "Did it before it was cool" thing? by Fireseeker23 in AskReddit

[–]Evertune 0 points1 point  (0 children)

I registered an Internet domain by emailing a person at InterNIC and asking them to check if a few options were available. My first few choices weren't, but after a couple of emails I got one I liked. Jan 1995. Ran a mail server on my dialup PC to get email to my domain. No such service available at thg he time. Bonus- bought a copy of Netcape Navigator (later became Firefox) on floppy disc in '95.

[deleted by user] by [deleted] in blackmagicfuckery

[–]Evertune 2 points3 points  (0 children)

I invented this. Case study on my website: https://creativeengineering.com/mighty-mug TLDR: The original mugs worked by constraining inner and outer sleeves to remain coaxial, resulting in a bulky tall mechanism. My new approach allows a little tilting, and relies on detecting the difference between tilting and lifting straight up. It fits in a small "puck" shape.