Auto and manual question!!!!!!!! plese look
10-24-2001, 02:06 PM
#1
Senior Member
Thread Starter
Join Date: Aug 2001
Posts: 156
Auto and manual question!!!!!!!! plese look
hey some guys at school have been tearing on me for wanting to change my auto to a manual, and they say an auto is faster anyway unless you are a really good driver, and i say no a manual is still faster as long as u know what u are doing.....also they said an auto would beat a manual off the line which def isnt true unless the auto is heavily modded and the 5spd is stock....some input/facts would be great to prove them wrong!!!! thanks
10-24-2001, 03:12 PM
#4
All YOUR grammer belong to me
Join Date: Jul 2001
Posts: 7,400
Re: Auto and manual question!!!!!!!! plese look
Originally posted by 95maxgxe
hey some guys at school have been tearing on me for wanting to change my auto to a manual, and they say an auto is faster anyway unless you are a really good driver, and i say no a manual is still faster as long as u know what u are doing.....also they said an auto would beat a manual off the line which def isnt true unless the auto is heavily modded and the 5spd is stock....some input/facts would be great to prove them wrong!!!! thanks
hey some guys at school have been tearing on me for wanting to change my auto to a manual, and they say an auto is faster anyway unless you are a really good driver, and i say no a manual is still faster as long as u know what u are doing.....also they said an auto would beat a manual off the line which def isnt true unless the auto is heavily modded and the 5spd is stock....some input/facts would be great to prove them wrong!!!! thanks
Take a stock a-magic vs. stock 5spd, the 5spd being a fair shifter, with an average launch, he will win everytime. Just the facts of life.
10-24-2001, 04:21 PM
#7
maybe
i think they call it GEARING... there are 5 gears in a manual tranny and 4 in an automatic. with the engines being the same, EXCEPT for mods, the tranny is the difference. talk to your friendsand see what they think about that. the gear ratio's are different. see what you come up with or what they have to say about that
10-24-2001, 05:23 PM
#9
"some input/facts would be great to prove them wrong"....
Well, here's one proven effective method for those retards in your school.
Get yourself a nice baseball bat and beat the crap out of them until they scream for this: M.A.N.U.A.L
Well, here's one proven effective method for those retards in your school.
Get yourself a nice baseball bat and beat the crap out of them until they scream for this: M.A.N.U.A.L
10-25-2001, 09:40 PM
#11
Donating Maxima.org Member
Join Date: Aug 2000
Posts: 577
I sure wish the gearing was readily modifiable in an automatic --
But they are nothing like manuals. In a 5 speed manual, there are 5 independent pairs of input and output gears. So altering the gear ratio of any specific gear or all of them is relatively easy provided somebody makes different gear sets for your car.
In an automatic, we have a ring, a sun, and a set of planetary gears. Interchanging which of the three are used as input and output gears determines the gear ratio. So in an automatic, I think its fairly difficult to change one gear ratio while keeping all the others the same.
I think this may explain why in virtually every 4 speed automatic I have seen in my life, 2nd gear is always about 75% taller than 1st gear while 3rd is 50% taller than 2nd and 4th is 50% taller than 3rd. It can't be just coincidence that every automaker thinks those are the best spread of ratios. Probably to tailor gear ratios closer together would require extra sets of input/output reduction gears at the back of the tranny -- but then the tranny would get too big for most front drive cars and then you might as well have a manual transmission or just pack more power into the engine --
Aside from 0-60 blasts, a manual is more fun to drive and gives better fuel economy -- a 5 speed can yield 20% more economy in continous lower speed stop and go "real world real big city" driving and 10% more on the highway. Fuel economy differences could be even more pronounced in hotter weather -- as temperature rises, the viscosity of the tranny fluid drops which probably reduces the efficiency of the torque converter when its not "locked up".
But they are nothing like manuals. In a 5 speed manual, there are 5 independent pairs of input and output gears. So altering the gear ratio of any specific gear or all of them is relatively easy provided somebody makes different gear sets for your car.
In an automatic, we have a ring, a sun, and a set of planetary gears. Interchanging which of the three are used as input and output gears determines the gear ratio. So in an automatic, I think its fairly difficult to change one gear ratio while keeping all the others the same.
I think this may explain why in virtually every 4 speed automatic I have seen in my life, 2nd gear is always about 75% taller than 1st gear while 3rd is 50% taller than 2nd and 4th is 50% taller than 3rd. It can't be just coincidence that every automaker thinks those are the best spread of ratios. Probably to tailor gear ratios closer together would require extra sets of input/output reduction gears at the back of the tranny -- but then the tranny would get too big for most front drive cars and then you might as well have a manual transmission or just pack more power into the engine --
Aside from 0-60 blasts, a manual is more fun to drive and gives better fuel economy -- a 5 speed can yield 20% more economy in continous lower speed stop and go "real world real big city" driving and 10% more on the highway. Fuel economy differences could be even more pronounced in hotter weather -- as temperature rises, the viscosity of the tranny fluid drops which probably reduces the efficiency of the torque converter when its not "locked up".
10-28-2001, 08:45 AM
#15
Yea, automatics are faster than manuals. That's why the worlds fastest cars, like Ford Tauruses, Chevy Monte Carlos, Buick Grand Centurys, and Pontiac Grand Ams, are automatics.
Sheesh. What kind of school do you go to? Did these guys get off the short bus?
Sheesh. What kind of school do you go to? Did these guys get off the short bus?
10-28-2001, 09:30 AM
#16
chris explained it pretty well above... but the mileage part doesn't work for our cars (at least in OD)... the OD gear on autos are taller so the engine spins at a lower rpm give them an advantage on long cruises... giving them a 1 mpg advantage over the manuals on highway ratings.
Automatics inheritly lose some power because they are hydraulic using ATF except when the torque converter locks up in OD (4th gear for our auto cars).
Autos have 3 forward gears (not including OD) whereas manuals have 4... hear the term 'close ratio 5/6 speeds'? We don't have this actually but the manuals can keep the revs up better than autos between gear changes.
Automatics inheritly lose some power because they are hydraulic using ATF except when the torque converter locks up in OD (4th gear for our auto cars).
Autos have 3 forward gears (not including OD) whereas manuals have 4... hear the term 'close ratio 5/6 speeds'? We don't have this actually but the manuals can keep the revs up better than autos between gear changes.
10-28-2001, 11:21 AM
#17
Senior Member
Join Date: Aug 2001
Posts: 556
Originally posted by DrivinDaMax98
this isnt right, is it?????
this isnt right, is it?????
It will not go to first unless you come to a complete stop. This is the case with most autos.
It WILL shift to first if you give it enough throttle to kick down below about 45 - 50km/hr
(This doesn't apply to US models, but Ill put it here anyway)
It WON'T go to first ever if the tranny is in SNOW mode on the A/T mode selector. EG three way position switch with Power/AT/Snow (similar to 3rd gen)
10-28-2001, 11:52 AM
#18
Turtle turtle... Moderator
iTrader: (25)
Join Date: Aug 2000
Location: San Bruno, Petaluma, SF Bay area
Posts: 4,857
from a dead stop the auto Max wont start off in 2nd gear. If you go from a rolling start like 5mph or so itll go to 2nd instead of 1st.
in the Max, the auto gets better gas mileage then the manual cause the 4th gear ratio is really low. (.69)
Dont forget auto's lose more power then manuals and auto's weigh more. Its true that the worlds fastest cars are automatics. But those are crazy modified ones, not the autos that you see in everyday cars.
in the Max, the auto gets better gas mileage then the manual cause the 4th gear ratio is really low. (.69)
Dont forget auto's lose more power then manuals and auto's weigh more. Its true that the worlds fastest cars are automatics. But those are crazy modified ones, not the autos that you see in everyday cars.
10-28-2001, 11:57 AM
#19
Originally posted by Turbo95Max
in the Max, the auto gets better gas mileage then the manual cause the 4th gear ratio is really low. (.69)
in the Max, the auto gets better gas mileage then the manual cause the 4th gear ratio is really low. (.69)
10-28-2001, 02:12 PM
#20
Supporting Maxima.org Member
iTrader: (29)
Join Date: Oct 2000
Location: Kernersville, NC
Posts: 1,766
Originally posted by NZ Max
Yes the quote that autos start in second is partly true.
It will not go to first unless you come to a complete stop. This is the case with most autos.
It WILL shift to first if you give it enough throttle to kick down below about 45 - 50km/hr
(This doesn't apply to US models, but Ill put it here anyway)
It WON'T go to first ever if the tranny is in SNOW mode on the A/T mode selector. EG three way position switch with Power/AT/Snow (similar to 3rd gen)
Yes the quote that autos start in second is partly true.
It will not go to first unless you come to a complete stop. This is the case with most autos.
It WILL shift to first if you give it enough throttle to kick down below about 45 - 50km/hr
(This doesn't apply to US models, but Ill put it here anyway)
It WON'T go to first ever if the tranny is in SNOW mode on the A/T mode selector. EG three way position switch with Power/AT/Snow (similar to 3rd gen)
well, i knew that, but i was talking about a dead stop
Thread
Thread Starter
Forum
Replies
Last Post