Comments by "Golden Croc" (@GoldenCroc) on "AutoTopNL"
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@CarsandChris They somewhat did tune the fifth gear to the engines potential, yes. But not fully. It could no doubt do quite a bit higher speed with another, suitable ratio or another gear.
Yes, I am sure everyone knows that it reaches the top speed in fifth, would be very strange if it could do it in sixth with such an enormous step between it and fifth.
A shorter sixth gear would give quite a bit more than 2 mph more, at least 6 mph and possibly 10 or a bit more would be easily acheivable. This is borne out from watching the acceleration of the car in the video, as well as the fact that by pure maths and numers a 530-ish hp car should do 300 kmh quite comfortably unless it got an atypical amount of drag for its frontal area.
I dont agree it was struggling, as in there is no more speed to be had. It is closing in on its top speed for sure, but as I said earlier, with that amount of acceleration seen in this video there is often at least 6 or so mph left until one reaches the true aerodynamic limited top speed.
In the end its mostly academic, just about no one ever pushes their car to their "true" top speed in the end. This fifth gear is a good compromise that is still more than sufficient for even the longest straights on any race track in the world.
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@MrFlazz99 Yes, this in indeed very common since the 1980s in American cars. If I remember correctly the first Dodge Viper for example was geared ridiculously high, with a theoretical top speed of close to 480kmh in top gear, and that was with way lower revs than this Mustang engine as well.
So none of this is new in any way. Having a very tall top gear or two highest gears is not a problem at all for the American market where just about no one goes above 250kmh regularly, certainly not back in the 1980-1990s.
Since then, it has found its way into more and more cars, with a lot of cars now having very tall top gears. My Porsche cayenne for example is also geared for a theoretical top speed of way more than 400kmh, just as this Mustang.
What is a little bit surprising is that they wouldnt make the fifth gear juuuust a little bit taller, but they probably felt the tradeoff in acceleration wasnt worth it for a bit more top speed that as good as no one ever uses. Fair enough, hard to argue with that.
Regarding too low gearing for max top speed, It is often found in diesels, just as your clio, since they have more limited revs. My old BMW 123d could hit the revlimiter in top gear already at stock power, and with just a little bit of tuning it was very easy to do so. Funnily enough, the 120d model with less power had higher gearing, and the 118d with less power again had even higher gearing than that. This was probably because BMW assume the customers buying the stronger engines prioritized acceleration vs fuel economy. Cheers.
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@papugenas Track driving. Thats what these cars are made for. Speed interval about 80-280 kph. 0-100 was a useful metric for testing engine power back in the days when it took normal cars at least 15 seconds or so, which was in the 1970s and earlier.
Thats why it was used. But it is limited by tire grip for decades now. I have never heard of anyone driving 0-100 with full throttle in normal trafic regularly, have you? Better hope that one always is the first car at the stoplights when it turns green, or one will run into the back of the car in front, because most people dont use much power when pulling away.
No, track driving is where its at for those who like to drive, and then you are usually way above 100kph, as I said earlier.
Not that it matters much, cars at this price point rarely sees the outdoors anyway, they are locked up in a multi millionaires garage. A pity, but thats just life.
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