RX7Club.com - Mazda RX7 Forum

RX7Club.com - Mazda RX7 Forum (https://www.rx7club.com/)
-   3rd Gen Archives (https://www.rx7club.com/3rd-gen-archives-73/)
-   -   what's the max speed on 1st gear can a 3rd gen take? (https://www.rx7club.com/3rd-gen-archives-73/whats-max-speed-1st-gear-can-3rd-gen-take-12666/)

beyondlimitz 07-30-01 08:55 PM

what's the max speed on 1st gear can a 3rd gen take?
 
what's the max speed on 1st gear can a 3rd gen take?

DK 07-30-01 09:11 PM

This is bench racing at it's finest. Dood ... it will be wherever the redline is ... 47 maybe? That might be high. Geez-us.

Red Rotary Rocket 07-30-01 09:37 PM

If you have a manual transmission (US model):

First gear has a 3.483 ratio.
The final drive is a 4.10 ratio
Stock tires are 225/50/16, so the circumference is 78.05 inches
Redline is 8,000 RPM

Sooooo. 8,000 RPM / 3.483 / 4.10 X 78.05 in. = 43724.6 in./min.

There are 63360 inches in 1 mile and 60 min per hour, soooo.

43724.6 / 63360 X 60 = 41.4 miles per hour.

If you have an automatic transmission, a different redline, or tire sizes different than stock, this will change.

HTH.

yomamasmama 07-30-01 09:45 PM

i think he meant what's best/safest way to launch your car without doing damage

it ain't polite to dis DK, dude ( did i spell that correctly ) people have to begin someplace, whether it's riding on the bench, the road, the track, or yo mama

Suparslinc 07-30-01 10:39 PM

Well, if I remember my days from TNFS correctly...The 3rd gen will hit about 60-61 mph in first :eek: :eek: :eek:

alwan16 07-30-01 11:06 PM

about 40mph in a stock 5 speed:

http://www.rx7.com/cgi-local/3catalog.cgi?cat=2&part=6

you can go about 72mph in 2nd which is perfect for auto-x

CantGoStraight 07-30-01 11:17 PM

Judging by his screen name
 
All I can say is ......if you don't have the stock computer (rev limiter)
then why not just put it in 1st gear and run it on up the ole speedo till it won't go any higher and remember that number and grab another gear and keep on going till you find out the limits on all the gears. I'd sure like to know myself....just don't want to waste my motor to find out.:D :moon: :stickpoke

rx7even 07-31-01 06:55 PM

41 mph

ejmack1 07-31-01 11:59 PM

see how much she'll take before she goes pop, then repeat in every gear until you have a nice chart of max engine RPM per gear, just what every FD owner wants.... Do it for us man:D


All times are GMT -5. The time now is 07:02 AM.


© 2024 MH Sub I, LLC dba Internet Brands