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Post by Paladin on Apr 14, 2015 21:38:41 GMT -5
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Post by SylvreKat on Apr 14, 2015 22:35:21 GMT -5
Also hijacking here. Double clutching sounds nuts. Why not just clutch through neutral to 2nd, then 3rd etc? Why did you have to clutch from 1st to neutral, then clutch from neutral to 2nd? Heck, my old Lynx, I could clutch from 1st to 4th sometimes. Not on purpose, mind you. But sometimes I would push a little as I pulled down, and then hello 4th! And anyone know what the Ford guy meant that new car has a double-clutch system? >'Kat, clutching nothing anymore except my purse. Get it? Huh? Oh, you bunch of men you.
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Post by wilds on Apr 14, 2015 23:23:10 GMT -5
"Albedo100 Reflective Spray" is another name on this product! Volvo made a good publicity stunt with this movie...
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Post by lain on Apr 15, 2015 0:12:47 GMT -5
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Post by lain on Apr 15, 2015 0:24:26 GMT -5
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Post by rockynv on Apr 15, 2015 12:06:57 GMT -5
Also hijacking here. Double clutching sounds nuts. Why not just clutch through neutral to 2nd, then 3rd etc? Why did you have to clutch from 1st to neutral, then clutch from neutral to 2nd? Heck, my old Lynx, I could clutch from 1st to 4th sometimes. Not on purpose, mind you. But sometimes I would push a little as I pulled down, and then hello 4th! And anyone know what the Ford guy meant that new car has a double-clutch system? >'Kat, clutching nothing anymore except my purse. Get it? Huh? Oh, you bunch of men you. Modern standard transmissions have synchronizers between the gears so when you shift from one to another the synchronizer engages first and matches the rotational speed of both gears so they will slip together smoothly without clunking or grinding. On the old ones you would have to let out the clutch in neutral and use the engine to either speed up or slow down the speed of the clutch shaft to match the speed of the gear you were shifting into. If you didn't do it right then you ground a pound of metal in your transmission and your gears wouldn't last very long. On a modern car with a double clutch that means it has two clutch discs with a steel disc seperating them between the engine flywheel and pressure plate. This allows smoother engagement and more horsepower to be transfered by a smaller clutch.
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Post by chucky on Apr 16, 2015 13:19:32 GMT -5
This thread has gone every where ? but where the title said
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Post by SylvreKat on Apr 16, 2015 22:45:50 GMT -5
This thread has gone every where ? but where the title said I rather thought we'd been there done that finished with it. ***** rocky, I'm not completely sure about what you wrote. Except that I am SO THANKFUL I never had to drive an old clutch! New ones are bad enough when you're turning a corner and steering and shifting and catching your falling purse. Oops, sorry, girl-talk again. As for the double clutch, I'm still confuzzled. Must be my non-mech-ness. I just can't see what you're trying to explain. Esp when I try to put it in my mental picture of my old wagon's tranny. That used fluid to change gears. I think. Filled more to upshift. I suppose rather like a sub's ballast. But then where does a double clutch fit into this for new car? And how does the manual-auto shift do its thing when I don't have a manual clutch? Oh geez my brain hurts. ***** Okay, here chucky--would you use the life paint stuff, with the view of making yourself more visible and hopefully better noticed? Or would you spurn it 'cause it's fully the car drivers' responsibility to pay attention and see you and not hit you? >'Kat
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Post by oldchopperguy on Apr 17, 2015 2:44:33 GMT -5
Kat,
Rockynv explained the "double-clutching" about as well as possible... In the OLD days (as in pre-war) many trucks and even cars had non-syncro manual transmissions. In the "H" pattern of the shift-lever, you had to re-engage the clutch as the lever passes through neutral and rev the engine by ear to the approx. rpm it would be in the next gear, then QUICKLY disengage the clutch and shove the lever into the next gear, and re-engage the clutch. If all went right, the tranny would gently "crunch" into gear with little grind.
In the fifties and sixties, most all cars had syncro-mesh stick-shifts which could be up-shifted 1,2,3 or downshift 3,2 but NOT 1 just by disengaging the clutch and shifting. But first gear was not syncro until later. You couldn't downshift from second to first until stopped... UNLESS you were adept at double-clutching. You COULD go from second to neutral, let up the clutch and rev the engine to the right rpm and quickly disengage the clutch and downshift into first "on the fly".
Same with my old Harleys. The "full-dress" or "baggers" had so little power that double-clutching into first at 10-15 mph would give the old Hogs a MAJOR "snap" in accelerating back into traffic after a turn... Now "Old Blue" my animal chopper had every other tooth ground off second, third and fourth, allowing full-throttle "bang-shifting" without even using the clutch. In an all-out drag for a month's take-home pay, that little trick (while NOT recommended) could shave a half-second off an 11-second, 135 mph quarter-mile.
And NOWADAYS I prefer the "twist-n'-go" CVT scooters... Cheesh, how the mighty have fallen... LOL!
1930's truck-drivers were often called "Double-Clutchin' Weasels" in pre-war Country songs... Yup!
As rocknv said, "double clutches" are a modern improvement on the old-school clutch-n'-gears cars.
Ride safe, and at least once before you die, try out an old Harley with crash gears... They're a hoot!
Leo in Texas
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Post by chucky on Apr 17, 2015 3:47:16 GMT -5
I wear reflective gear all the time to be seen... I love in Africa... ?
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Post by SylvreKat on Apr 17, 2015 8:26:47 GMT -5
Leo, thanks! I think I get it now...get that it was a REAL PAIN to drive anything back then! Sheesh!! It's sort of a miracle cars survived the old manual double-clutch horror. I thank God for the engineers who first, designed the modern clutch (although I'm not really a fan of that, either, but better than what you had!), and second, designed the auto-tranny!
Chucky, good for you, both on being seen and on being safe! As you might've gathered from my posts, I'm a firm believer in taking whatever action I need to help prevent me becoming a statistic. That includes All The Gear All The Time, and bright see-able colors. Drive safe, and keep posting!
>'Kat
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Post by nulldevice on Apr 17, 2015 9:44:50 GMT -5
I have a major gripe about car driver sight lines. The A pillars are so wide and rear view mirror so low because of the On Star enclosure of our 2008 Buick Lucerne can hide an SUV from view as I go around corners and on a sharp turn. Reflective paint won't help there. A bike doesn't stand a chance with this car. Next car we get I'll keep the '06 Taurus and trade the Buick off.
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Post by rockynv on Apr 17, 2015 12:19:36 GMT -5
Leo, thanks! I think I get it now...get that it was a REAL PAIN to drive anything back then! Sheesh!! It's sort of a miracle cars survived the old manual double-clutch horror. I thank God for the engineers who first, designed the modern clutch (although I'm not really a fan of that, either, but better than what you had!), and second, designed the auto-tranny! Chucky, good for you, both on being seen and on being safe! As you might've gathered from my posts, I'm a firm believer in taking whatever action I need to help prevent me becoming a statistic. That includes All The Gear All The Time, and bright see-able colors. Drive safe, and keep posting! >'Kat Think of a manual automotive clutch as a sandwich where a rotating flywheel on the engine spins along with a pressure plate like two slices of bread with a clutch disk like a slice of provolone sitting between them so that when you take your foot off the clutch pedal or release the clutch lever big springs squeeze the provolone between the two rotating slices of bread so that the clutch disk (provolone) now spins too along with the shaft leading into the transmission and the two slices of bread. In a double clutch you add another slice of bread and cheese like making a double decker sandwich. The three slices of bread spin with the engine while the cheese spins powered by the engine only when you release the clutch pedal or lever squeezing the entire sandwich together. Double clutching is a method of using the clutch while a double clutch is type of clutch mechanism.
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Post by oldchopperguy on Apr 17, 2015 13:20:56 GMT -5
I have a major gripe about car driver sight lines. The A pillars are so wide and rear view mirror so low because of the On Star enclosure of our 2008 Buick Lucerne can hide an SUV from view as I go around corners and on a sharp turn. Reflective paint won't help there. A bike doesn't stand a chance with this car. Next car we get I'll keep the '06 Taurus and trade the Buick off. ABSOLUTELY! Somewhere back around 1955, Detroit introduced the "wraparound" windshield. It was GREAT!!! The most extreme versions of this design were probably on the 1959 GM cars (Chevy, Buick, Pontiac & Cadillac). These "wrapped around" both the SIDE and TOP of the windshield, providing MAGNIFICENT visibility left and right for eye-level objects, AND upward, so you could actually SEE traffic lights hung over the center of the street! Cheesh! What a great idea... Obviously came from 1950's fighter jets, along with the tail-fins. The wraparound windshield went away sometime in the 1960's. I understand, because they were E-X-P-E-N-S-I-V-E to make and keep somewhat distortion-free... AND the fact that they required a large "dog-leg" in the door frame along the fender line, which front-seat passengers, and the driver often smashed their knees against, even causing injuries in addition to bruises. Despite their "bad points" the wraparound windshield was a major step forward in visibility. And, back then, cars ALSO had big, VISIBLE hoods so you could SEE where the nose of the car ended.. (as long as you added another foot or two for the 500 pound steel "Dolly Parton" bullet-bumpers so popular back then... LOL! Leo (glad most scooters don't have "pillars") in Texas
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