gear speed redline

[kirko]

I dont have a tach, ive tried searchin the foum but came up with nothing. What speed is redline for 1st, 2nd, and 3rd gear in a 5 speed aspire? does anyone know?

[mechanicaldj]

WHY IN THE WORLD WOULD ANYONE IN THEIR RIGHT MIND WOULD TRY TO FIND OUT??????????????????


AND ALSO................MOVED!!!!!! :shock:

[kirko]

Well it was just a question, didnt know if anyone knew. Im not planning on racing the 65 horse beast, i have the built nitroused avenger for that. I was just expanding my knowledge in general. Didn't mean to offend anyone....

[codex]

I think its a fair question. I rev mine to about 5k rpm for best acceleration, haven't tried hitting the rev limiter yet power cuts out way before so its pointless.

[Festy46]

It's easy enough to figure out with a calculator if you have the gear ratios and your tire circumference measurement.
The gear ratios for the Aspire are:
1st - 3.45:1
2nd - 1.944:1
3rd - 1.275:1
4th - .861:1
5th - .692:1
Final drive - 4.06:1

Using as an example a 185/70R13 tire measures 73" in circumference.
Assuming redline to be 7000 rpms for the sake of argument.
For 1st gear: 7000 rpms divided by 3.45 equals 2029 rpms.
2029 rpms divided by the final drive ratio 4.06 equals 500 rpms.
500 rpms multiplied by 73" (circumference of the tire) equals 36,500".
36,500" per minute multiplied by 60 minutes in an hour equals 2,190,000".
Divide 2,190,000" by 12 to get feet per hour which equals 182,500 ft.
182,500 ft. divided by 5280 (number of feet in a mile) equals 34.6 mph.
Therefore at 7000 rpms in 1st gear you would be running about 35 mph.
You can use any rpm as your redline and just measure the circumference of your tire.

[kirko]

well to my math then, using a 6000rpm redline, it goes as follows,

1st = 30mph
2nd = 53mph
3rd = 80mph

craziness, i would never push it that hard...!

[studdyhalllooser]

wow...i thought 55 in 3rd was pushing it hard.....

[packrat427]

I run mine to 70 all the time in 3rd

[kirko]

wow...i thought 55 in 3rd was pushing it hard.....

touche'

[Festy46]

Kirko is running an Aspire so he has a lower final drive gear ratio than you Festy guys have. He has to turn 500 more rpms to get the same mph as the Festiva.