Gear ratio calculator
#2
here's one i think is cool, it shows all gears on a rpm vs mph chart and you can move the mouse over the chart to show exact speed at those rpm's in any gear applicable:
http://www.geocities.com/z_design_st...nsmission.html
2003 350z MT
1st 3.79
2nd 2.32
3rd 1.62
4th 1.27
5th 1.00
6th .79
final drive 3.54
enjoy
http://www.geocities.com/z_design_st...nsmission.html
2003 350z MT
1st 3.79
2nd 2.32
3rd 1.62
4th 1.27
5th 1.00
6th .79
final drive 3.54
enjoy
#6
Registered User
iTrader: (4)
Originally Posted by 350zWarz
here's one i think is cool, it shows all gears on a rpm vs mph chart and you can move the mouse over the chart to show exact speed at those rpm's in any gear applicable:
http://www.geocities.com/z_design_st...nsmission.html
2003 350z MT
1st 3.79
2nd 2.32
3rd 1.62
4th 1.27
5th 1.00
6th .79
final drive 3.54
enjoy
http://www.geocities.com/z_design_st...nsmission.html
2003 350z MT
1st 3.79
2nd 2.32
3rd 1.62
4th 1.27
5th 1.00
6th .79
final drive 3.54
enjoy
#7
Registered User
Join Date: Jun 2006
Location: Dallas, TX
Posts: 9
Likes: 0
Received 0 Likes
on
0 Posts
here's a free gear calculator.
go to gear calculators section and click on the 350Z/G35 link.
you can change wheels, tread width, aspect ratio, rear axle ratio, transmission gear number and rpm. You dynamically see what the speed in mph will be.
http://www.speedshoppro.com/GearCalc...alculator.html
www.speedshoppro.com
go to gear calculators section and click on the 350Z/G35 link.
you can change wheels, tread width, aspect ratio, rear axle ratio, transmission gear number and rpm. You dynamically see what the speed in mph will be.
http://www.speedshoppro.com/GearCalc...alculator.html
www.speedshoppro.com
Trending Topics
#9
the burninator
iTrader: (11)
I'm suprised at how many questions can be answered with this or similar calculators
you can plug any car's setup into it and see what torque multiplication factor you'd have at any given speed vs another car's.
Anything having to do with top speed can be answered by plugging stuff into it. Or the rpms you will start the next gear at if you could instantly shift
you can plug any car's setup into it and see what torque multiplication factor you'd have at any given speed vs another car's.
Anything having to do with top speed can be answered by plugging stuff into it. Or the rpms you will start the next gear at if you could instantly shift
#11
Registered User
iTrader: (12)
Join Date: Jul 2004
Location: Raleigh, NC
Posts: 2,311
Likes: 0
Received 0 Likes
on
0 Posts
stock 3.54FD and RB25 tranny gears I will be doing 132mph in 3rd gear at 7800rpm 1st gear will be at damn 53mph , 2nd gear will top out at 89mph, and damn 4th gear is 171mph....thats just stupid cause 7800 rpm isn't very extreme at all....maybe I will be going to 3.9 gears sometime down the road.
#14
Registered User
iTrader: (2)
Join Date: Jul 2005
Location: CA
Posts: 96
Likes: 0
Received 0 Likes
on
0 Posts
I tried both of these calculators before i bought my 3.9fd to make sure i could finish the 1/4 mile in 4th gear but i couldn't do it. put in the tire size of 275/40/18 and both calculators say i should hit 109 @ 6800 rpm.
truth is i couldn't hit 103 with my 3.9fd. now i'm wondering if my fd wasn't 3.9...
truth is i couldn't hit 103 with my 3.9fd. now i'm wondering if my fd wasn't 3.9...
#15
Registered User
Join Date: May 2007
Location: Missouri
Posts: 14
Likes: 0
Received 0 Likes
on
0 Posts
Here is just another way to graph the information.
I have been doing this for various cars for about 15 years using Excel. As the other charts, it shows speed vs engine RPM.
I also add the shift-points just before the redline, and extend lines from the shift point back to the RPM of the higher gear after the shift. For example, if you shift at around 7300 RPM from 1st to 2nd (around 41 mph), when you engage 2nd the RPM will threoretically be around 4500. Of course, there will be some drop in speed and RPM, but it gives you an idea.
Nando
I also add the shift-points just before the redline, and extend lines from the shift point back to the RPM of the higher gear after the shift. For example, if you shift at around 7300 RPM from 1st to 2nd (around 41 mph), when you engage 2nd the RPM will threoretically be around 4500. Of course, there will be some drop in speed and RPM, but it gives you an idea.
Nando
#16
Registered User
iTrader: (12)
Here's anothe graph hot off the presses for us non-revup guys. I haven't seen it done yet, so I thought I'd lay out all the FD options on top of each other so you can get a good comparison of what is changing and by how much. You revup and HR guys simply need to extend the lines up to your redline. One thing I did notice is that the HR has gearing capable of reaching 200 mph! You HR guys definitely wanna go to a tighter FD (either 3.7 or 3.9).
#17
Registered User
Join Date: Sep 2006
Location: I travel
Posts: 22
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by Nando61
I have been doing this for various cars for about 15 years using Excel. As the other charts, it shows speed vs engine RPM.
I also add the shift-points just before the redline, and extend lines from the shift point back to the RPM of the higher gear after the shift. For example, if you shift at around 7300 RPM from 1st to 2nd (around 41 mph), when you engage 2nd the RPM will threoretically be around 4500. Of course, there will be some drop in speed and RPM, but it gives you an idea.
Nando
I also add the shift-points just before the redline, and extend lines from the shift point back to the RPM of the higher gear after the shift. For example, if you shift at around 7300 RPM from 1st to 2nd (around 41 mph), when you engage 2nd the RPM will threoretically be around 4500. Of course, there will be some drop in speed and RPM, but it gives you an idea.
Nando
Thread
Thread Starter
Forum
Replies
Last Post
2006, 350, 350z, calculator, exxtreme, gear, gears, mph, multiplication, nareg, nissan, ratio, ratios, torque, transmission