FR-S Speed/RPM Calculator

[FR-S #2637]

I have a document called "Vehicle Speed/RPM Correlation Calculator" which is from the FT86Club and came from somewhere on this website. The figures are for the FR-S with manual transmission. Is there a similar document for the automatic? I can do the math (ratio of AT vs. MT gear ratios times the MT figures) but there may be some slippage in the AT that I'd like to quantify. Does such a document for the AT car exist?

[Synack]

Where is the one for manual? I need this to set up my Torque app.

[brichard0625]

i tried to set one up the other day but i dont know the exact wheel diameter for our tires.. when i use a calculator it gives me 24.62 in diameter..heres what i got with the rev limiter at 7800.
Tire diameter (in.): 24.62

RPM: 7800

1st Gear Ratio: 3.626

2nd Gear Ratio: 2.188

3rd Gear Ratio: 1.541

4th Gear Ratio: 1.213

5th Gear Ratio: 1.000

6th Gear Ratio: 0.767

Final Drive Ratio: 4.100


1st Gear (mph): 38
1st Gear (kmh): 61
2nd Gear (mph): 64
2nd Gear (kmh): 102
3rd Gear (mph): 90
3rd Gear (kmh): 145
4th Gear (mph): 115
4th Gear (kmh): 184
5th Gear (mph): 139
5th Gear (kmh): 223
6th Gear (mph): 182
6th Gear (kmh): 291

By the way @ synack what information do you have to put in torque app
website i used http://www.apexgarage.com/tech/gear_ratios.shtml

[Synack]

I need information for what speed is the car going at 2000rpm for each gear.

1st gear @ 2000 = ??mph
2nd @ 2000 = ??mph

For Manual and all 6 gears.

I don't have the car right now to test it but I was hoping for there to be some documentation or something else.

[brichard0625]

[brichard0625]

Originally Posted by Synack

I need information for what speed is the car going at 2000rpm for each gear.

1st gear @ 2000 = ??mph
2nd @ 2000 = ??mph

For Manual and all 6 gears.

I don't have the car right now to test it but I was hoping for there to be some documentation or something else.

Where can you put that information at on the torque app? I remember seeing something like this but i cant find it anymore

[Smudgeous]

Originally Posted by brichard0625

i tried to set one up the other day but i dont know the exact wheel diameter for our tires.. when i use a calculator it gives me 24.62 in diameter..heres what i got with the rev limiter at 7800.
Tire diameter (in.): 24.62

According to the Michelin website the Primacy HP 215/45R17 tires have a diameter of 24.7 inches (844 revs per mile).

Edit: Oops, forgot to refresh before posting. Looks like you already had that info

[Synack]

Originally Posted by brichard0625

Where can you put that information at on the torque app? I remember seeing something like this but i cant find it anymore

THANK YOU

Actually there is a new plugin that gives a retro UI for Torque and it gives some extra features. In one of the settings menus I was asked for MPHs at 2000rpm so I just figured I would want to give it as much data as possible.

It's called Racing Meter.

[brichard0625]

Originally Posted by Synack

THANK YOU

Actually there is a new plugin that gives a retro UI for Torque and it gives some extra features. In one of the settings menus I was asked for MPHs at 2000rpm so I just figured I would want to give it as much data as possible.

It's called Racing Meter.

O cool i didnt even know im going to look at that now