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#31
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casette shifting, again
On 12/15/2018 7:20 PM, jbeattie wrote:
On Saturday, December 15, 2018 at 1:59:24 PM UTC-8, AMuzi wrote: On 12/15/2018 3:04 PM, Emanuel Berg wrote: Frank Krygowski wrote: Emanuel, with all due respect, you should spend the winter reading a physics book or two. Or three. Skip the parts on electricity, atomic physics, etc. Concentrate on forces, motion, work, energy etc. - the parts that apply to bicycles. [...] Blah blah blah, you have told me this at least a dozen times by now. Probably because it is easier to be didactic/demeaning than to actually answer the questions. more. I left school without having slept through even one physics class. My reference work here is a 1955 high school textbook for $1 (9 Kr). I don't know all of even that, but I understand the world well enough to know that this headline last week: https://www.dailymail.co.uk/sciencet...soon-2022.html was completely ridiculous. The chamber pressures are in the same range, but not power, not even within a magnitude*! Power is work over time. Without some grasp of the actual world, you would not have laughed aloud when reading the headline, etc. *A typical 120mm tank round is 7.5 kilos of depleted uranium moving at 1700 m/s. The new 6.8 rifle typically moves 7.5 grams at 850 m/s. That's why you need basic physics. BTW, here's an interesting case that crossed my desk: https://www.bendbulletin.com/localst...killed-in-tank https://www.oregonlive.com/pacific-n...explosion.html Interesting object lesson for re-loaders. I'm representing a party on a collateral insurance issue. I've represented a couple big gun makers in over-pressure cases. Reloads. Too much powder or the wrong powder can blow-up guns large and small. Interesting to me that Preston's family wants extra money because Preston "knew he was going to die." I know I'm going to die, too. Jay, can you get me some money because of that? I'll donate it to Tom! ;-) -- - Frank Krygowski |
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#32
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casette shifting, again
John B. Slocomb writes:
Why in the world would anyone want to use Emacs, (by the way the proper name is "GNU Emacs") an application that is 40 years old. Yes, I know that it can do many strange and wondrous things but when you get right down to it, it is hardly the weapon of choice for writing a book, posting to USENET or keeping one's shopping list current. There have been many flavors of emacs over the years, "GNU Emacs" is one of them. Most definitely my weapon of choice when posting to usenet. -- |
#33
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casette shifting, again
John B. Slocomb wrote:
CF might indicate Carbon Fiber but I believe in this case it probably means Coefficient of Friction :-) Thanks, I tried to google it but as one would expect everything connecting it to bikes ended up interpretating CF as Carbon Fiber. One should start writing CFRP as Jeff does. -- underground experts united http://user.it.uu.se/~embe8573 |
#34
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casette shifting, again
John B. Slocomb wrote:
Actually answering questions is rather difficult when the recipient has insufficient knowledge to understand the answer. That's what I said. Instead of answering my questions, you tell me to read books and Google them. You don't even realize the implication, are you? The people who write books and web pages are able to explain it to me, but you are not. This is all a ridiculous and absurd collective reaction from a bunch of bike tech people, responding to a couple of question on bike technology, on a bike technology newsgroup. -- underground experts united http://user.it.uu.se/~embe8573 |
#35
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casette shifting, again
On Sun, 16 Dec 2018 03:12:56 +0100, Emanuel Berg
wrote: One should start writing CFRP as Jeff does. That wasn't me. I usually use just CF. However, looking at the Wikipedia page: https://en.wikipedia.org/wiki/Carbon_fiber_reinforced_polymer it appears that CFRP is the correct acronym for CF bicycle tubing. I should probably change my evil ways and use CFRP. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#36
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casette shifting, again
Ralph Barone wrote:
I thought that the phrase RTFM came from the computer culture, and not bike culture. But seriously, if you went on an emacs group and said "I'm having trouble trying to use the doomahickie thingamajig to make my letters all angularinated", they'd probably tell you to RTFM and learn the language before posting. 1) "RTFM" is used by kids and teenagers. What excuse do you guys have? 2) "I'm having trouble trying to use the doomahickie thingamajig to make my letters all angularinated" - a fun example (N.B. irony) - but, why don't you post an actual quote from my question on rod brakes, and show where my language is in any way comparable to that? 3) I don't care what you think anyone "probably" would do on gnu.emacs.help. Go and ask a sincere question and I'll follow the replies closely. -- underground experts united http://user.it.uu.se/~embe8573 |
#37
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casette shifting, again
On Sat, 15 Dec 2018 23:36:09 +0000 (UTC), Ralph Barone
wrote: Emanuel Berg wrote: AMuzi wrote: Blah blah blah, you have told me this at least a dozen times by now. Probably because it is easier to be didactic/demeaning than to actually answer the questions. Sincerely, Frank's advice is excellent. Visit a used book store and find a basic physics textbook. It's well worth a few Krona and a few hours of your time, if only to posit questions here! I spent 6 years, 7 months, and 12 days at the university. My degree project [1] is 153 pages. I solved the same problem five other guys did at two North-American universities. I don't have to prove to anyone I can read and understand whatever I put my mind to. In fact, this has nothing to do with any of this. This is the bike culture which for whatever insane reason is snobbish beyond belief. You can all try this out for yourself. Install Emacs, use it until you run into a problem, then go to gnu.emacs.help and ask about it. If you get the answer "you are not using the terminology correctly, go read a book, then come back" please show it to me, as, in all my years in computing, I've never ever seen that. [1] http://user.it.uu.se/~embe8573/hs-li...ort/report.pdf I thought that the phrase RTFM came from the computer culture, and not bike culture. But seriously, if you went on an emacs group and said "I'm having trouble trying to use the doomahickie thingamajig to make my letters all angularinated", they'd probably tell you to RTFM and learn the language before posting. I think that the term "RTFM" predates computers as I heard it used way back when I worked on airplanes. In fact it was a must, to get caught working on something without the manual and without it being opened to the correct page was justification for losing a stripe at one time in SAC (Strategic Air Command). cheers, John B. |
#38
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casette shifting, again
Ralph Barone wrote:
Frank continues to tell you to read a book because many of us don't answer your questions because due to your use of non-standard language, we can't understand your questions. I see. I moment ago, you don't answer because I don't understand your answers. Now, you don't answer because you don't understand my questions! -- underground experts united http://user.it.uu.se/~embe8573 |
#39
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casette shifting, again
On Sat, 15 Dec 2018 21:11:03 -0500, Radey Shouman
wrote: John B. Slocomb writes: Why in the world would anyone want to use Emacs, (by the way the proper name is "GNU Emacs") an application that is 40 years old. Yes, I know that it can do many strange and wondrous things but when you get right down to it, it is hardly the weapon of choice for writing a book, posting to USENET or keeping one's shopping list current. There have been many flavors of emacs over the years, "GNU Emacs" is one of them. Most definitely my weapon of choice when posting to usenet. I always thought that Emacs was written by Richard Stallman way back in the early days and then made it part of his GNU library of applications. cheers, John B. |
#40
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casette shifting, again
On Sat, 15 Dec 2018 18:42:30 -0500, Frank Krygowski
wrote: On 12/15/2018 5:01 PM, Emanuel Berg wrote: AMuzi wrote: Blah blah blah, you have told me this at least a dozen times by now. Probably because it is easier to be didactic/demeaning than to actually answer the questions. Sincerely, Frank's advice is excellent. Visit a used book store and find a basic physics textbook. It's well worth a few Krona and a few hours of your time, if only to posit questions here! I spent 6 years, 7 months, and 12 days at the university. My degree project [1] is 153 pages. I solved the same problem five other guys did at two North-American universities. I don't have to prove to anyone I can read and understand whatever I put my mind to. In fact, this has nothing to do with any of this. This is the bike culture which for whatever insane reason is snobbish beyond belief. I'm not trying to be snobbish. If you ask questions properly, we can answer them. Example: You asked "Swept area, should that be big or small for the brake to be efficient?" But in a technical sense, the very purpose of a brake is to be completely inefficient - that is, to throw away energy. (I can't resist) Would one say very efficient at being inefficient :-? So what are you asking? Are you referring to lots of braking force for little input force? Are you referring to little lost motion in the actuating mechanism? Is it something else? I honestly can't tell. I don't doubt that you may be brilliant at computers. But not everyone is a polymath. As an example, one of my colleagues at the university has a PhD in electronics with many publications in digital systems, robotic dynamics and stability, etc. However, he had to bring his bike in to school to have me adjust his brakes. Again, not everyone is a polymath. And many of the questions you have asked here are extremely basic. If I didn't already know, I wouldn't ask an international discussion group what "swept area" of a brake means. I'd google it. https://www.miataturbo.net/attachmen..._area_calc.png cheers, John B. |
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