While reading the Born brochure I noticed that the 230 PS e-Boost model has a different final drive ratio (12.976) than the standard 204 PS model (11.53).
So the e-Boost motor spins 12.5% faster at the same road speed - it's effectively permanently in a lower gear.
That's why it's quicker even though it uses basically the same motor (same max torque).
You would think there would be downsides to the difference - more motor noise, less efficiency at speed, and higher motor wear.
But there's absolutely no evidence of these.
The bad news is that it means a 204 PS car can never be software unlocked to 230 PS (even if it had the larger front brakes).
e-Boost 230 PS vs 204 PS
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- Joined: Thu Apr 28, 2022 3:22 pm
Hi, could you post this brochure?
I haven't see any yet.
THX
Marco
I haven't see any yet.
THX
Marco
You need to click on the "Download a Pricelist" link over on the right of the main Cupra Born webpage.
In the UK this links to -
https://www.cupraofficial.co.uk/content ... 4-2022.pdf
It's more of a brochure than just a price list.
In the UK this links to -
https://www.cupraofficial.co.uk/content ... 4-2022.pdf
It's more of a brochure than just a price list.
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- Posts: 3
- Joined: Thu Apr 28, 2022 3:22 pm
Thank you!
I assume that 170kw has a longer gear ratio than 150kw
170kw version at 10.000 motor rev is 129 km/h
150kw version at 10.000 motor rev is 115 km/h
Here same info about ID.3
https://insideevs.com/news/400900/vw-1- ... arbox-meb/
I assume that 170kw has a longer gear ratio than 150kw
170kw version at 10.000 motor rev is 129 km/h
150kw version at 10.000 motor rev is 115 km/h
Here same info about ID.3
https://insideevs.com/news/400900/vw-1- ... arbox-meb/
Actually I think it's the other way around - the 150kW has the longer gear ratio.
Assuming final drive ratio = motor RPM / wheel RPM, and wheel circumference is approx. 2.19 m, then
170kw version - 10.000 motor RPM / 12.976 gives 770.7 wheel RPM, which is 101 km/h
150kw version - 10.000 motor RPM / 11.53 gives 867.3 wheel RPM, which is 114 km/h
Ie. the 170kW is effectively in a lower gear, which is why it accelerates better.
Assuming final drive ratio = motor RPM / wheel RPM, and wheel circumference is approx. 2.19 m, then
170kw version - 10.000 motor RPM / 12.976 gives 770.7 wheel RPM, which is 101 km/h
150kw version - 10.000 motor RPM / 11.53 gives 867.3 wheel RPM, which is 114 km/h
Ie. the 170kW is effectively in a lower gear, which is why it accelerates better.
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- Joined: Thu Apr 28, 2022 3:22 pm
From the previous link, about id3 motor app310
"...The transmission (reduction) ratio of the electric motor speed to the wheels is 10x. It's a lot, because the highly efficient and compact electric motor reaches a 16,000 rpm maximum at speed of 160 km/h (100 mph)."
I assume that the gear ratio is different from electric motor and combustion motor.
Cupra 170kw is quicker than 150kw because it has 20 kw more!
"...The transmission (reduction) ratio of the electric motor speed to the wheels is 10x. It's a lot, because the highly efficient and compact electric motor reaches a 16,000 rpm maximum at speed of 160 km/h (100 mph)."
I assume that the gear ratio is different from electric motor and combustion motor.
Cupra 170kw is quicker than 150kw because it has 20 kw more!
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