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#31
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#32
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"Steve" wrote As already stated, 2-stroke diesels really don't have a power-to-weight advantage over 4-strokes. They still have to have a camshaft and exhaust valves (they aren't like weed whacker engines, you know), so they don't save that weight. Plus they have to have a blower for scavenge air. The only area where they save weight is in that the connecting rod and crank can be lighter, and that only helps offset the added weight of the blower. How about the fact that they have power pulses in each revolution? They could possibly have half the displacement, and still get the same power, (or close to it) with less weight than the double displacement 4 cycle. Yes, the blower weight is added, but it is nice to make good power, way up there. -- Jim in NC |
#33
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"Sport Pilot" wrote in message oups.com... So what I often transpose letters. I don't spend time proofreading something as trivial as a usenet messsage. Yur lak of ettension tu detale makes ti seam lik yu dounut giv a dam. Ti si knot heard too tack a secant adn pruff reed a poust. -- Jim in NC |
#34
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"Sport Pilot" wrote ...
Got cut off some how. Actually I thought I had decided not to send it, and came back and some how hit the enter key. A long time ago I was working for small airline and I was asked to evaluate any letters from the pilots that were sent to flight ops. I was acting as filter for the Director of Flight Ops. Now, as a class, pilots aren't too bright and none of them can spell but when I hit the fourth misspellled word I'd throw the thing in the trash can. "This guy can't know what he's talking about." It was done at a subconscious level. It takes me a while to figure things out but I shared their contempt for spelling in my own writing. It finally dawned on me that if I look down at bad speellers then other people must look down my work. It's human nature and you can"t fight it. If you want your work to be accepted then you have to project an image of intellect. Rich |
#35
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Steve wrote:
Sport Pilot wrote: Sooo. I oftern transpose letters, I don't proofread something as triavil as usenet messages. Its one thing to have the occasional typo, but typing a constant run-on of misspelled and non-punctuated text just screams "I'm a moron!" to the world. Actually, what it screams is "I am dyslexic". The ignorant often confuse dyslexia with (e.g.) being a moron. However, failure to proofread, perhaps especially if dyslexic, does indicate that he doesn't expect us to value what he's writing, which in turn suggests that he doesn't think its worth much either. In a world full of ignorance, a wise dyslexic would use a spelling and/or grammar checker on anything he wanted taken seriously. Frank |
#36
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Steve wrote:
But there are more and more small diesels that run just as fast as gasoline engines. There's no fundamental limit thats any different than a gasoline engine, really, but up until now there's not been a demand for high-RPM diesels. When I was reading about the Volkswagen TDI engine, I vaguely remember coming across someone who said that the redline of that engine was set by the speed which which the burning fuel expanded. Sounds rather fundamental to me - but, then again, I'm a computer guy. -Luke |
#37
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writing. It finally dawned on me that if I look down at bad speellers
then Please tell me you did that on purpose. |
#38
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"LCT Paintball" wrote ... writing. It finally dawned on me that if I look down at bad speellers then Please tell me you did that on purpose. Usenet Rule #5: "All posts complaining about spelling must themselves contain at least one misspeeling". Rich |
#39
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Usenet Rule #5: "All posts complaining about spelling must themselves
contain at least one misspeeling". Rich Sorry, I missed that memo. For the record, I disagree with you. I cannot spell, but I'm no idiot. Some people are good at math, others are athletic, and others can spell. Just because it's easy for you doesn't mean it is for others. |
#40
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On Fri, 13 May 2005 08:52:00 -0500, "MJC" wrote:
"Andrew P." wrote in message link.net... Wandering aimlessly about the Web, I heard Sport Pilot say: You have most of it right. Some things you have wrong, 1. Desiel injection timing is differant than on an Otto engine. The fuel is injected during the intake cycle on the Otto engine and the fuel is injected during the ignition cycle on the Desiel. On the Desiel the fuel injection cycle starts just before TDC and ends well after TDC. The fuel ignites as soon as it hits the hot air. etc., etc. --- SNIP --- It's Diesel, not "Desiel". -- Andrew P. Well if you're going to get picky, it's "Auto" engine, not "Otto" engine. MJC No, it is OTTO, named after the guy who invented the "otto cycle" engine - just like Diesel is named after the guy who invented the compression ignition or "diesel cycle" engine. |
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