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Topic Review (Newest First)
12-22-2003 01:00 PM
garyk
death to this thread

i sometimes instruct at tracks. the 1st 2 things we teach newbies is about heel and toe and double clutching. now die thread.
12-20-2003 10:15 PM
bfocused Garyk has it, that is what double clutching is. It is a term the 18 wheeler drivers know all about. Before there was synconization (spelling) of transmissions, double clutching was a learned art. The idea is to match the speed of the motor with the gears, this allowed you to shift up or down easier. I hope this thread dies..................................
bfocused
12-20-2003 11:47 AM
voortrek3 Just my 2 cents, "double clutching" refers to shifting a non-syncromesh transmission where the shift pattern e.g. 1st-clutch in-neutral-2nd-clutch out, etc. "Heel-toeing" refers to blipping the throttle while in neutral between shifts e.g. 1st-neutral-throttle-2nd etc. It helps eliminate the rpm lag that naturally occurs between up-shifts so that the next gear matches its optimum rpm. Anyway, I used it at the FOCUS CHALLENGE at Willow Springs last week end and it was great.
12-19-2003 06:08 PM
garyk
hey vin

thats so true about movies. you'd figure a/xers would be knowledgable about cars right. well one time i showed up at an a/x out on long island driving a countach. the movie canonball run was out and mentioned 220 as top speed for the car(actually 168 w/wing on.) sure enough, i was asked does it do 220 mph! who would believe anything about that movie.
12-19-2003 05:14 PM
viney266 Man o Man, all that horse beating...you know the A>S>P>C> A> will have something to say...good explanations Gary, it is amazing how one line in a movie warped so many people...it just shows the sheep factor in America sometimes...no offense to anyone intended
12-19-2003 11:55 AM
garyk
last beating

absolutely a waste of time and unnecessary wear and tear on car. once upon a time, back before electricity, transmissions did not have those little things called syncros. in fact two street cars i owned had non syncro 1st gears. then double clutching was needed. now many cars even have syncros on reverse. please moderator kill this thread.
12-19-2003 11:41 AM
SVT4ME
Quote:
Originally posted by Seb656
As one of my friends has informed me double cluthching is launching off the starting line by revving your engine to high RPM's (varies from car i think around or below 6 for the SVTF) then letting of the clutch giving you a launch
Hmm, that's definitely NOT double clutching. That won't be much of a launch, either - 6 grand on an SVT is too much for a launch, when you pop the clutch you'll just spin the tire (yes, tire, not tires) like crazy. Anywho, like garyk said, double clutching is a complete waste for the vast majority of people driving manual transmission cars...
12-19-2003 11:32 AM
garyk
beating a dead horse

for the last time here it is. the idea is to match engine speed with trans shaft speed. to do this requires more than blipping a throttle. if you just keep the clutch in the trans shaft is not affected. it requires you to put car in nuetral first, then try to match engine revs to anticipated revs of trans shaft before shifting down. with practice this takes nanoseconds. in the race car i merely pull it out of say fifth and while heel and toeing rev engine then put in clutch and select the chosen gear. case in point summits main straight, one of two places on the ten turn course where i shift. as i approach the end of the straight i am running about 120 mph. with heel on brake and toes on gas i pull the car out of 5th gear while revving engine to about 7k. brake hard and simultaneaously shift to 3rd. thats a double clutch. repeat again going into turn 5. it just takes practice. for drag racing or street use nonessential. of course i'm always used to hearing ricers rev fuel injected motors up as if they were carbed, cammed motors that needed it.
12-17-2003 11:57 AM
ZETEC3
Quote:
Originally posted by Seb656
As one of my friends has informed me double cluthching is launching off the starting line by revving your engine to high RPM's (varies from car i think around or below 6 for the SVTF) then letting of the clutch giving you a launch
Oh man that is soooo far off, there is the technique during road racing thats already been explained, and then theres the extra pump needed with older trucks(or cars) that have no synchros.
12-17-2003 11:53 AM
Seb656 As one of my friends has informed me double cluthching is launching off the starting line by revving your engine to high RPM's (varies from car i think around or below 6 for the SVTF) then letting of the clutch giving you a launch
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