downshift question.... (another one)
01-13-2003, 02:14 PM
#1
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downshift question.... (another one)
when i downshift.... i usually put in the clutch, and as im pulling it out of gear, with the clutch still in, i blip the throttle to get about 1000 rpms to match (or whatevers necassary)....and in the same motion put it straight into gear..... am i doing it totally wrong?
should i pull it out of gear and let the clutch off then blip the gas before i put it back in gear?
ive also noticed that a first to second shift is clunky unless i let the rpms drop about a grand before engagment..... when in other gears........ i can do it much sooner
should i pull it out of gear and let the clutch off then blip the gas before i put it back in gear?
ive also noticed that a first to second shift is clunky unless i let the rpms drop about a grand before engagment..... when in other gears........ i can do it much sooner
01-13-2003, 04:15 PM
#2
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if the clutch is in blipping the throttle doesnt do anything, it just spins the engine. Dont know what a clutch does? It disconnects the motor from the tranny. Anyway, dont bother with any of that, you've been watching too much fast and the furious.
01-13-2003, 04:38 PM
#3
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You're doing it right. You have to blip the throttle to match rpm's, otherwise, if you don't, and you release the clutch, you'll notice that the car jerks, as the both sides of the clutch match rpm's. This is very hard on the tranny, clutch, and engine.
If you match the rpm's before you release the clutch, you SHOULD get a nice seamless transition (If you're doing it right).
The second thing you are talking about is some mangled form of double clutching. You don't need to do this, ever.
Now, on another note, please structure your question better. I had a hard time understanding what you were specifically asking. Clearly, "Br1t1shguy" did, too, since he tried to flame you, but instead made himself look stupid, since you were talking about downshifting, and not revving the engine for no reason.
Larry
If you match the rpm's before you release the clutch, you SHOULD get a nice seamless transition (If you're doing it right).
The second thing you are talking about is some mangled form of double clutching. You don't need to do this, ever.
Now, on another note, please structure your question better. I had a hard time understanding what you were specifically asking. Clearly, "Br1t1shguy" did, too, since he tried to flame you, but instead made himself look stupid, since you were talking about downshifting, and not revving the engine for no reason.
Larry
01-13-2003, 05:53 PM
#4
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ok first off, bristihgay your a dumbas$ screw you...
LStrain, thanks for the help! so im doin a good downshift, thanks
what i was sayin about the 1 - 2 shift is that if i just put in the clutch at 3000 and shift to second, and then let off the clutch (even somewhat slowly) it will bounce or buck or just not be smooth but if i keep the clutch in a second longer until the rpms dop a bit more, it will go in perfectly smooth i was just wondering what the hell i am dopin wrong
LStrain, thanks for the help! so im doin a good downshift, thanks
what i was sayin about the 1 - 2 shift is that if i just put in the clutch at 3000 and shift to second, and then let off the clutch (even somewhat slowly) it will bounce or buck or just not be smooth but if i keep the clutch in a second longer until the rpms dop a bit more, it will go in perfectly smooth i was just wondering what the hell i am dopin wrong
01-13-2003, 06:48 PM
#5
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alright, chill chill. I thougt you were talking about double clutching on the downshifts, not rev-matching. I've been around this stuff long enough that I've started to get sick of people asking about how to double clutch etc when its completely pointless (except for reverse!). Sorry if I was abit hasty ;-p
About you're other question, 1st and second are pretty sensitive gears, IE the ratios are so that you can buck the car around very easily with the throttle/clutch. The only way you'll really get it smooth is just driving around. It's a cliche, but it is just like riding a bike, you cant really tell someone to make themselves learn how to balance themselves and not fall of, their brains just have to develop the motor skills. Same with driving a stick. But it cant hurt to try ;-p. The reason its smooth if you let the clutch bite for a second is simply because you are spreading out the time in which the engine speed comes up to meet the speed of the wheels. It just sounds like you need to give the car more throttle while you let out the clutch so that the engine is closer to the right speed before it bites.
About you're other question, 1st and second are pretty sensitive gears, IE the ratios are so that you can buck the car around very easily with the throttle/clutch. The only way you'll really get it smooth is just driving around. It's a cliche, but it is just like riding a bike, you cant really tell someone to make themselves learn how to balance themselves and not fall of, their brains just have to develop the motor skills. Same with driving a stick. But it cant hurt to try ;-p. The reason its smooth if you let the clutch bite for a second is simply because you are spreading out the time in which the engine speed comes up to meet the speed of the wheels. It just sounds like you need to give the car more throttle while you let out the clutch so that the engine is closer to the right speed before it bites.
Last edited by Br1t1shguy; 01-13-2003 at 06:53 PM.
02-16-2003, 02:37 PM
#8
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Originally posted by Kestrel
Double clutching isn't completely useless...you still need it if you plan on driving big trucks anytime soon. Double clutching does what your synchro does, so doing it helps save your synchros.
Double clutching isn't completely useless...you still need it if you plan on driving big trucks anytime soon. Double clutching does what your synchro does, so doing it helps save your synchros.
1st+r only
the 1-2 gear change on the sube is a large step and it takes longer for the engine to slow down that much
02-20-2003, 11:13 PM
#9
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double clutching is fun though. It's amazing how fast the body can perform it.
From some article I found on the net:
"Double clutching is a technique for rev-matching the transmission's *intermediate shaft* to the output gear that is to be selected. This is a function that is normally handled automatically by the transmission's synchro-mesh gears (or synchro's). It is useful to double clutch for extreme gear changes, for older transmissions with worn synchro's, or simply to save wear on the synchro's. It's also an entertaining thing to do"
From some article I found on the net:
"Double clutching is a technique for rev-matching the transmission's *intermediate shaft* to the output gear that is to be selected. This is a function that is normally handled automatically by the transmission's synchro-mesh gears (or synchro's). It is useful to double clutch for extreme gear changes, for older transmissions with worn synchro's, or simply to save wear on the synchro's. It's also an entertaining thing to do"
Last edited by Glockperfection; 02-20-2003 at 11:16 PM.
02-22-2003, 08:45 PM
#10
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Originally posted by LTrainSVT
The second thing you are talking about is some mangled form of double clutching. You don't need to do this, ever.
The second thing you are talking about is some mangled form of double clutching. You don't need to do this, ever.
Plus, it never hurts to double clutch, if done properly.
02-25-2003, 12:40 PM
#11
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Hi guys, newbie in these parts.
Double clutching most certainly eases the workload on the synchros.
Sorry if this has been covered a million times, but until I had to do it for real, this was the way I understood it best:
Your whole purpose in doing the double clutch is to arrange the situation where the transmission and engine are connected to one another through the clutch plates with the car in neutral. As a result, when you blip the engine, the tranny spins up to higher RPM without effecting the drive wheels, and now you're ready to drop a gear.
Double clutching most certainly eases the workload on the synchros.
Sorry if this has been covered a million times, but until I had to do it for real, this was the way I understood it best:
Your whole purpose in doing the double clutch is to arrange the situation where the transmission and engine are connected to one another through the clutch plates with the car in neutral. As a result, when you blip the engine, the tranny spins up to higher RPM without effecting the drive wheels, and now you're ready to drop a gear.
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