As the teams are locked into their current gear ratios for a while, I looked for some on board videos and extracted many RPM-Km/h pairs. And then I plotted them here and fitted straight lines (constrained to pass through the origin) to the data. I tried to collect data only in acceleration phases where there was little risk of wheel spin, and after removing a few outliers, I am surprised at how good the data we get fed is. There is quite some jitter, but most of it is due to the fact that the refresh rates for RPM and Km/h seem not to be synchronized. For the lower gears I had to accept cornering data, but it still works quite good.
Please note that this does not reflect actual limits of RPM usage. The data are a mix of drivers pushing in quali, pushing in the race, pit stops, drivers in traffic and cruising around.
Also note that for many teams 1st and 8th gears are missing for now. 8th gear is the orange circles (notably missing for Mercedes, unused AFAIK), 1st gear the squashed salmon rectangles.
Whenever I compared the two drivers from the same team, the numbers matched reasonably well, so I think it is safe to assume the same set of gear ratios for both drivers in each team.
There is a video with RPM for Ricciardo, but I skipped it as it was with wet tires, which are larger than dry tires.
Data for Mercedes
. Mostly Hamilton, the lower gears include Rosberg in slicks in a damp track.
Data for Williams
. Mostly from Bottas, second gear from Massa in slicks in the wet.
Data for McLaren
. Mostly from Button. The hovering spot in eight is button maxing up at the end of the main straight due to drag! (His data are from the race, most others are from quali, including the top speed in 8th from Magnussen).
Data for Force India
. From Hulkenberg.
Data for Toro Rosso
. From Kvyat.
Data for Red Bull. From Vettel in P3 and Ricciardo in the race. Vettel seems to have somewhat shorter 3rd, 4th and 5h gears than Ricciardo, but with possible issues with tire pressures and wear from practice to race, I decided to leave all the data in. Data points to the right of the linear fit can often correspond to wheelspin.
And finally a comparison of calculated speeds for each gear between 8000 and 13000RPM, where they are likely to spend 99% of the time. I hope to get all 8 gears from all 11 teams in eventually (and it better be soon before they start to change them). Note that I made space for whatever the monstrous 8th gear from Mercedes is going to be. But I doubt they'll reach the 400+ Km/h implied in this data.
I am starting to consider whether Mercedes is saving weight with 1st and 8th gears made of plastic (kidding), because they really don't seem to need them, at least until Spa. And notice how incredibly compressed all gears are in the Williams.
*Note, look at the colors, don't be fooled by the missing 1st and 8th gears calculations.
**Note2, the data fro Lotus and Marussia are from Blanchimont's calculations.
####### Edit: Updated
and with the correct colors for Torro Rosso in page 2
There are quite some teams missing and also many gears missing. If anyone can point me to appropriate videos, I'll be more than happy to update the data, but I fear this will have to wait until Malaysia. I'd be even more happy to update this is someone sends me the already extracted RPM-Km/h pairs.
A text or word or excel file should be enough.