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Max speed in each gear

675 views 6 replies 4 participants last post by  m&ms  
#1 ·
After I saw this reddit thread today on short vs tall gearing, I thought I'd share with the class a speed vs rpm graph I created a while back.

It uses gear ratios, final drive, and tire size to calculate the engine rpm at a given speed with 7,000 rpm as the redline.
Image

Here's also the top speed for each gear in a table. It makes me wonder if the car could do 220 mph with enough horsepower.
GearTop speed (mph)
1
35​
2
56​
3
83​
4
104​
5
137​
6
179​
7
219​
8
280​
What's fun for street driving is you can do a nice 1-2-3 gear pull and you're at still at highway speeds. Although it only takes a few seconds...
 
#5 ·
After I saw this reddit thread today on short vs tall gearing, I thought I'd share with the class a speed vs rpm graph I created a while back.

It uses gear ratios, final drive, and tire size to calculate the engine rpm at a given speed with 7,000 rpm as the redline.
View attachment 172253
Here's also the top speed for each gear in a table. It makes me wonder if the car could do 220 mph with enough horsepower.
GearTop speed (mph)
1
35​
2
56​
3
83​
4
104​
5
137​
6
179​
7
219​
8
280​
What's fun for street driving is you can do a nice 1-2-3 gear pull and you're at still at highway speeds. Although it only takes a few seconds...
Something wrong with your chart there, 2nd and 3rd gear aren't that close