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Originally posted by badass bunny yea going from manual to automatic was no fun for me. |
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Originally posted by chrix I don't know if you want to try this with a new car, but you can do "rev-match" on an auto too.. but becareful cause you don't want to put it into reverse by accident.. hah |
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Originally posted by BigDaddy5 Well, I gave up my old beater for a "new" civic, but it's an automatic....my problem is that I hate not having the ability to shift. So my question is that is it bad to up and down shift in an automatic, using D4, D3, 2 and 1? I realize that controls the gears, but is it bad to use them? I've heard it can be, that's why I'm curious. |
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Originally posted by WRX2k3 That has to be one of the funniest ricer comment ever! Rev-match with an AT. That's what the torque converter is for.. I can't imagine that to be any good... since neutral drops on an AT is a nono.. and your so called rev-match has the same concept.
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Originally posted by WRX2k3 Just curious.. why didn't just you buy a MT civic? |
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Originally posted by WRX2k3 your so called rev-match has the same concept. |
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Originally posted by chrix I'm not sure if that's the same concept.. Is dropping your cluch at like 5k rpm same as rev-matching?? |
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Originally posted by WRX2k3 Your rev-matching.. I suppose it goes like this: You're driving in say, D4.. go to Neutral blip the throttle drop to D3 Am I correct? |
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Originally posted by WRX2k3 Your rev-matching.. I suppose it goes like this: You're driving in say, D4.. go to Neutral blip the throttle drop to D3 Am I correct? |
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Originally posted by WRX2k3 Your rev-matching.. I suppose it goes like this: You're driving in say, D4.. go to Neutral blip the throttle drop to D3 Am I correct? |
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Originally posted by WRX2k3 Your rev-matching.. I suppose it goes like this: You're driving in say, D4.. go to Neutral blip the throttle drop to D3 Am I correct? |
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Originally posted by WRX2k3 I'm not going to comment anymore 'cuz it's pretty pathetic already.. But thanks for the laugh.. i'm still cracking up.
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Originally posted by chrix try going at 50km/h in D, then go to neutral, rev it to around 4k-5k rpm, drop it to 1st-- if you don't do the so-called "rev-match", the tranny might drop out "unnecessary wear and wear on the tranny. useless too." what is wear and wear? "if u floor the gas pedal, the tranny will downshift for you anways. so why bother going thru all that trouble?" Ok, imagine you are going to go thru a 90' cornor at say... 60km/h can you do that? edit: Do you drive an auto by any chance?? "just drive in D and only shift up/down if you have those "shift tronic/sportshift/etc" ones." I agree, but if you want EXTRA fun from a beater AT that you don't care how long it'll last, you can try the stuff I suggested |
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Originally posted by edwinx hmm...ok. like you said " don't care how long it'll last" when an auto tranny goes...its worst than a manual tranny. the car just doesn't move. no neutral to go into to push the car. but yeah. i never do that to an auto. extra fun would be just to push the gas pedal to force a downshift or upshift. i have manual. and only drive auto when i have to. sorry. i mean, "wear and tear" |
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Originally posted by Smeech Uh rev matching wont do ×××× on an auto tranny. They brake shift... auto trannies are constantly connected to the torque converter...its just worthless. |
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Originally posted by chrix go read www.howstuffworks.com |
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Originally posted by Smeech With that said, automatics automatically rev-match when downshifting. |
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Originally posted by Smeech why the ×××× did you tell me to go read howstuffworks if Im spewing out facts? It's an automatic, doesn't have a manual shift or shiftronic option, it's not meant to be ××××ed with. |
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Originally posted by chrix #1 wtf is a manual shift #2 wtf is a shiftronic option #3 torque convertor is always converted, so? your point? |
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Originally posted by Smeech #1 Manual Shift option was on some ford and mazda automatic cars in the late 80s early 90s. You won't remember that. #2 shiftronic, whatever it's called... the Eclipses, Infinitys they all have it. #3 automatics automatically rev-match, what's your point? I'm being an ××? I'm sorry. I had a ×××××× day at work. On the same token, if you want to have fun with your automatic and destroy it, nuetral drop the ××××? |
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Originally posted by chrix I see... Cause, if you havn't drive an auto for long enough you won't understand the difference between auto and manual and.. the auto's have lower 1st and 2nd gears usually.. so I can understand why the super manual driving wrx boy is laughing at going into 1st gear @ 50km/h |
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Originally posted by chrix yea gear ratios I'm not sure if it's consider "lower" or "higher"... well the numbers are often "lower"... I just mean they can go higher speed since they reduce less |
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Originally posted by chrix yea gear ratios I'm not sure if it's consider "lower" or "higher"... well the numbers are often "lower"... I just mean they can go higher speed since they reduce less |
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Originally posted by edwinx then its higher or the "gear is taller" hence it has worst acceleration compared to the manual version of the car if based on gear ratios. shorter gears allows for better acceleration. (in an nutshell) |
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Originally posted by chrix No you're wrong Higher means Shorter Lower means Taller Thanks Smeech for confirming. edit to explain: A higher gear ratio will reduce the speed more |
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Originally posted by chrix "Lower Gear" refers to a lower gear ratio - what does this mean really? I.e. Gear A 3.2:1 -- input 3.2 revs, output 1 rev (higher) Gear B 2.1:1 -- input 2.1 revs, output 1 rev (lower) Which gear has a lower ratio? Which gear will provide better acceleration?? and top speed?? Which gear will give you a longer(taller) range? Which will give a shorter range? It's summer so my words probably dont make much sense.....I really can't write now.. hah.. sorry... try think about it... |
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Originally posted by edwinx I am sure you got it mixed up now. |
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Originally posted by chrix Trust me.. Gear Ratios: Higher Ratio=Higher Number, Reduces speed more. Engineering student here edit: try here!! http://science.howstuffworks.com/gear-ratio.htm |
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Originally posted by edwinx not to insult ur education but the labeling iis different in automotive terms. when someone says they have a close ratio gear box it means their gears are closely spaced and geared for acceleration. so.. to have better acceleration, the number must be a larger number. (along with a "short" final drive) ie. 3.30:1 or something the reason why they call it "shorter" or "close" is because the gear ratios are very close to each other. you won't lose speed when you shift to the next gear. no one ever says" oh, i just upgraded my transmission to a tall ratio or high gearing" . they all say close ratio or shorter gears. now, whether or not the whole industry misused the labels or not, but that's how i learnt it and how i still hear ppl referrring it to. maybe they label it differently when you talking abou generic gears but in automobiles, I am sure it is labeled this way. |
| Gear Ratios: Higher Ratio=Higher Number, Reduces speed more. |
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Gear A 3.2:1 -- input 3.2 revs, output 1 rev (higher) Gear B 2.1:1 -- input 2.1 revs, output 1 rev (lower) Which gear has a lower ratio? Which gear will provide better acceleration?? and top speed?? Which gear will give you a longer(taller) range? Which will give a shorter range? |
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Originally posted by Smeech fdr: lower= long gears higher= short gears. the difference between each gear also determines the length of that gear. <snip> |
's so please point out my mistakes if theres any|
Another example: Imagine a 4AT car with this transmission: 2.8:1 in 1st gear, 1.5:1 in 2nd gear and 1:1 in 3rd and another 5MT car with this transmission: 3.3:1 in 1st, 1.8:1 in 2nd, 1.2:1 in 3rd from stationary to 80km/h, how long will you be in each gear on the 4AT? on the 5MT? Does the 4AT have shorter gears or longer gears??? |
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Originally posted by Smeech Those two are very close, but Y2 would probably edge out because the final drive ratio is higher. Check this out, it pertains to Mustangs and deals only with the Final Drive Ratio, but gives you a general idea of the difference. (The higher the FDR, the shorter the gears, the faster the acceleration, the LOWER the top speed) |
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Originally posted by edwinx i dunno the calculate for time vs gear ratios. but. the 5mt will accelerate faster compared to the 4at. the 5mt's tranny's gears are closer/shorter compared to the 4at. ok. now my example: Y1 Y2 1st 3.166 3.307 2nd 2.052 2.105 3rd 1.416 1.458 4th 1.103 1.107 5th 0.870 0.848 R 3.000 3.000 FD 4.266 4.40 Which tranny is best suited for acceleration? which tranny has the shorter gears (overall)? |
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Originally posted by edwinx then its higher or the "gear is taller" hence it has worst acceleration compared to the manual version of the car if based on gear ratios. shorter gears allows for better acceleration. (in an nutshell) |
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Originally posted by chrix The whole point was that Autos, have LOWER gear ratios in the WHOLE range, and as a result, their gears are LONGER (TALLER)...AND because of that, it's "Okay" to go 60km/h in an 4AT car... That was the whole point... |
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Originally posted by edwinx yeah. they lower ratios but its called "longer/taller gears" so we're been argueing/debating over the wrong thing?? i was under the impression that you called higher value gears "low". hence my reference that you reversed the labels. |
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Originally posted by edwinx I am sure you got it backwards. lower gear(shorter), high accelleration, low top speed high gear(taller), low accelleration, high top speed. |
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Originally posted by chrix yea after re-reading the whole thread I guess this is where the misunderstanding between us started: |
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