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  1. JayMaechtlen

    compensating for increased CO2 - methods?

    How much solar input would have to be intercepted or re-radiated to compensate for increased greenhouse gases? For example? what happens if we put some huge reflective panels in L2? (thinking aluminized mylar or equivalent) Earth's projected area is about 11.9 million square miles. What percent...
  2. JayMaechtlen

    Airliner cabin air

    The LA Times has an article Dec 20 titled "Toxic fumes on airplanes make crews, fliers sick" I'm having trouble finding that article online, but here is a related article: https://www.latimes.com/california/story/2020-12-17/how-we-investigated-toxic-chemicals-on-airplanes "The Times’ analysis...
  3. JayMaechtlen

    Fire on Bonhomme Richard

    The Bonhomme Richard was docked in San Diego when something went badly wrong. Still on fire for second day. From the Los Angeles Times: SAN DIEGO — U.S. Navy officials said Monday that the fire ravaging the amphibious assault ship Bonhomme Richard for a second day has reached temperatures as...
  4. JayMaechtlen

    California power grid, wildfires

    So, among our various issues in California, we have an aging electric grid. It may be more an economic /political issue than engineering? https://www.wsj.com/articles/pg-e-knew-for-years-its-lines-could-spark-wildfires-and-didnt-fix-them-11562768885...
  5. JayMaechtlen

    Sources of manuals and manufacturer contacts

    From time to time we see requests for manuals - If you find a good source of manuals, either new or used, please post? Fanuc used to be decent about having manuals for their controls - don't know how far they go back. I'm going to call Amada, will post back on what they are willing to offer. I...
  6. JayMaechtlen

    Application support - both machine and software

    Thread starter - I am in the US, and worked for Amada years ago. At that time, we provided application support for customers. If someone had trouble cutting, or had a new material, we would work with them or run tests in the showroom to figure it out. AFIK, we even had a software support group...
  7. JayMaechtlen

    Magnetic gears

    New to me - obviously heavy on the marketing spin, but still - quite interesting. http://hackaday.com/2016/08/15/ask-hackaday-what-are-magnetic-gears-good-for/ http://www.magnomatics.com/pages/media/magsplit-video.htm Jay Maechtlen http://www.laserpubs.com/techcomm
  8. JayMaechtlen

    surface finish on bearing inserts

    On another forum, an interesting photo is posted of a bearing insert. A modern vehicle with lots of miles, and the insert does not appear to ever have touched the journal. But, what's interesting is the surface finish of the insert - comments? http://corvaircenter.com/phorum/read.php?1,809154...
  9. JayMaechtlen

    fuel additive

    claims to stabilize and also 'restore volatility". ?? about 4 1/2 minutes in. Link Jay Maechtlen http://www.laserpubs.com/techcomm
  10. JayMaechtlen

    additives - comments?

    Jay Leno does an interview with a rep of archoil - a line of additives and such - comments? http://www.youtube.com/watch?v=h3ir3bg0ESU&list=PLCYtOmBv0Co_1_4u4DzAZ94cv8AgYqPMJThanks Jay Maechtlen http://www.laserpubs.com/techcomm
  11. JayMaechtlen

    Gas pressure effect on lens to affect focus

    Just food for thought - Has anyone tested or run the numbers to see how far a lens might deflect under high gas pressure? And, how far would that deflection move the focus point? I wonder if that would help explain some of the rules of thumb regarding focus height when cutting various...
  12. JayMaechtlen

    fun with computerized vehicles

    More tales from my Sister the truck driver. Not just a driver, she and her hubby are owner-operators. That is, they each have a late model Freightliner and put some serious miles on them. The unit in question is still under warranty, with only 2-3 hundred thousand miles on it. It seems that...
  13. JayMaechtlen

    "Liquid Springs" - comments?

    An outfit is promoting packaged struts having "compressible liquid" springs and controllable damping. www.liquidspring.com Snake oil? Or some combination of good technology and **? cheers Jay Jay Maechtlen http://www.laserpubs.com/techcomm
  14. JayMaechtlen

    Prima Optimo - anyone using?

    Anyone have one of the old Prima Optimos, especially one of the (US) Amada systems? (CRG 306, Coherent EFA 51 or Arrow) This is mostly curiosity - I worked on that project, wondering how many are running nowadays. Regards Jay Jay Maechtlen http://www.laserpubs.com/techcomm
  15. JayMaechtlen

    The Passenger Car Body by Dieter Anselm on sale at SAE

    SAE has discounted this book (mentioned and linked in a FAQ for this forum) to $5.00. as of 2 oct 2012 FWIW Jay Maechtlen http://www.laserpubs.com/techcomm
  16. JayMaechtlen

    giant glass balls to concentrate solar

    cute http://www.techhive.com/article/2000362/giant-glass-balls-might-be-the-future-of-solar-power.html?tk=out http://www.designboom.com/weblog/cat/16/view/23214/spherical-glass-solar-energy-generator-by-rawlemon.html; sounds like snake oil to me- can only gather what impinges on collector -...
  17. JayMaechtlen

    Brake pad materials - ratings/selection

    Sorry, my Google-fu is filing me today. I thought there were some ratings for brake pads, in terms of temperature resistance/behavior, effectiveness /grip hot versus cold. Most of the "info" I can find is subjective and/or inconsistent. help? Jay Maechtlen http://www.laserpubs.com/techcomm
  18. JayMaechtlen

    load specs for OEM-type ball joints

    I'd like to find load ratings and specs for various ball joints- I'm reworking a suspension and would like the spring loading on the lower arm instead of strut/upper arm. I'm sure the original lower ball joint isn't rated to carry spring forces, so maybe I can find a standard /similar unit...
  19. JayMaechtlen

    US truck fuel economy and Obama's new rules

    In thread71-223596 it seems that fuel economy has taken a real hit in the last few years due to emissions requirements. Now, we see "Obama Signs Order to Boost Trucks' Fuel Economy" Obama said the government believes that "we can increase fuel economy by as much as 25% in tractor trailers using...
  20. JayMaechtlen

    block processing time

    just for fun- some time back, I ran a test on a Fanuc 16-based laser system. I created a simple program with x,y coordinates about .002 inch apart. (actually a 2" circle). I recall it would only go about 5~6 inches/min because the controller wouldn't process the instruction blocks any faster...

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