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In-gear rpm versus speed

schorsch

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Today I took my Emira out with my GPS timing gear (by QStarz). Before you get too excited, I didn't perform any acceleration runs because my car isn't run in yet (has 880 km on the clock now). I did capture various speeds at various rpms in all gears (GPS and Tacho speeds) in km/h. For those who love numbers, here you are:
gearmeter2000 rpm3000 rpm4000 rpm
1GPS192937
Tacho192939
2GPS355270
Tacho365471
3GPS477194
Tacho497297
4GPS6192123
Tacho6394126
5GPS79120161
Tacho82123165
6GPS90136181
Tacho93139186

It was not so easy to read the numbers correctly at the exact rpm. I think all values may be off by 1 km/h in either direction.
In addition, just for fun I did a 0 .. 100 km/h acceleration test with a gentle launch and with max 4000 rpm in each gear. Took about 7 seconds. So thats the performance you get while running you your car ;-).
Lastly, I did a break test from 100 km/h .. 0. Full emergancy break resulted in 2.48s break time. Not sure what distance that was as my GPS meter doesn't show that, but it felt like a decent breaking experience. Crazy that performance EVs can do 0..100 acceleration that is even quicker.
For context. Weather conditions: Dry street, 2 °C. Tires were somewhat cold.
 
Thanks for the very interesting and detailed report! Curious to see what the performance and braking figures will be in another 1000km from now 🙂

And in case you try again - traction control seems to be impacting the acceleration in gear 1 and 2 even in Sport mode quite a fair bit.

I remember that in another thread people complaint about Matt Watson only doing a 5.3 to 100km/h. I believe this was mainly due to the fact that the early press cars didn't have (or were not allowed to use?) track mode yet. When I fully floor the pedal in first gear, there is zero slip. So trying with TC off would be interesting.

To stay on topic - I also thought that the speedo is very close to real GPS speed on my attempts to compare.
 
Ignore below. Somehow convinced that was the Scottish one.
Plenty of clues in the post.

From above, 60 (not mph) in 1st and 100 in second well short of 6800 redline. (Doubling the 3k speeds)
Not what I would expect from the "short gearing" banter.

2-3 and 3-4 ratios do close up.
 
Last edited:
From above, 60 mph in 1st and 100mph in second well short of 6800 redline. (Doubling the 3k speeds)
Not what I would expect from the "short gearing" banter.

2-3 and 3-4 ratios do close up.
KPH not MPH?
 

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