What's up with all the GEARS??? Help
10-01-2002, 08:50 AM
#1
Guest
Posts: n/a
What's up with all the GEARS??? Help
Hi guys, i have a question about the gears on our cars. Why is it that in the first gear we can accelerate from 0 to 40mph in like 2 secs and we feel the car pulling really hard, but when we get to the second or third or fourth gear, the car doesn't pull as hard and each gear does not give a 40mile window on the speedometer. it is like the hp decreases with each upshift. What is the logic behind that anyways? can we do something to make all gears perform like the first? THanks guys.
10-01-2002, 09:11 AM
#2
Senior Member
Join Date: Apr 2001
Posts: 4,968
Re: What's up with all the GEARS??? Help
Originally posted by PoweredbyNissan
Hi guys, i have a question about the gears on our cars. Why is it that in the first gear we can accelerate from 0 to 40mph in like 2 secs and we feel the car pulling really hard, but when we get to the second or third or fourth gear, the car doesn't pull as hard and each gear does not give a 40mile window on the speedometer. it is like the hp decreases with each upshift. What is the logic behind that anyways? can we do something to make all gears perform like the first? THanks guys.
Hi guys, i have a question about the gears on our cars. Why is it that in the first gear we can accelerate from 0 to 40mph in like 2 secs and we feel the car pulling really hard, but when we get to the second or third or fourth gear, the car doesn't pull as hard and each gear does not give a 40mile window on the speedometer. it is like the hp decreases with each upshift. What is the logic behind that anyways? can we do something to make all gears perform like the first? THanks guys.
10-01-2002, 09:38 AM
#3
It's chrome alright...
Join Date: Dec 2001
Posts: 4,009
Re: What's up with all the GEARS??? Help
that's funny... just the other day I was thinking 2nd and 3rd pull like a *****.
Think of it this way... 1st gets you "going", 2nd - 4th get you "there". 6th gets you gas mileage but isn't very fun. 5th... come to think of it, I don't really use 5th very often.
Think of it this way... 1st gets you "going", 2nd - 4th get you "there". 6th gets you gas mileage but isn't very fun. 5th... come to think of it, I don't really use 5th very often.
Originally posted by PoweredbyNissan
Hi guys, i have a question about the gears on our cars. Why is it that in the first gear we can accelerate from 0 to 40mph in like 2 secs and we feel the car pulling really hard, but when we get to the second or third or fourth gear, the car doesn't pull as hard and each gear does not give a 40mile window on the speedometer. it is like the hp decreases with each upshift. What is the logic behind that anyways? can we do something to make all gears perform like the first? THanks guys.
Hi guys, i have a question about the gears on our cars. Why is it that in the first gear we can accelerate from 0 to 40mph in like 2 secs and we feel the car pulling really hard, but when we get to the second or third or fourth gear, the car doesn't pull as hard and each gear does not give a 40mile window on the speedometer. it is like the hp decreases with each upshift. What is the logic behind that anyways? can we do something to make all gears perform like the first? THanks guys.
10-01-2002, 10:45 AM
#5
Senior Member
Join Date: Apr 2001
Posts: 4,968
Re: Re: Re: What's up with all the GEARS??? Help
Originally posted by Madd Kidd
I'll play the dumb one here cuz i don't know what gear ratios do.
I'll play the dumb one here cuz i don't know what gear ratios do.
this is of course totally independent of the actual axel (differential) drive ratio...
you can also refer to some other sources...
http://www.geocities.com/dave240z/trans_ratios.htm
10-01-2002, 10:58 AM
#6
Senior Member
Join Date: Aug 2002
Posts: 1,280
Re: What's up with all the GEARS??? Help
Originally posted by PoweredbyNissan
Hi guys, i have a question about the gears on our cars. Why is it that in the first gear we can accelerate from 0 to 40mph in like 2 secs and we feel the car pulling really hard, but when we get to the second or third or fourth gear, the car doesn't pull as hard and each gear does not give a 40mile window on the speedometer. it is like the hp decreases with each upshift. What is the logic behind that anyways? can we do something to make all gears perform like the first? THanks guys.
Hi guys, i have a question about the gears on our cars. Why is it that in the first gear we can accelerate from 0 to 40mph in like 2 secs and we feel the car pulling really hard, but when we get to the second or third or fourth gear, the car doesn't pull as hard and each gear does not give a 40mile window on the speedometer. it is like the hp decreases with each upshift. What is the logic behind that anyways? can we do something to make all gears perform like the first? THanks guys.
10-01-2002, 01:59 PM
#8
the reason lower gears pull harder is because of the ratios and a thing called torque multiplication, let's say first gear is 4:1 and you have 250ft-lbs of torque and 250hp. in 1st gear because of the gear ratios you have 1000ft-lbs of tq to the ground but only 1/4 of the hp you have to the ground. in a gear like 4th which is 1:1 you have 250ft-lbs of torque and 250hp to the wheels.
understnad?? if not i'll go into more detail and get an article on it.
understnad?? if not i'll go into more detail and get an article on it.
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