Comments by "Golden Croc" (@GoldenCroc) on "DRIVETRIBE"
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@MsArchitectschannel Steelies are often lighter than alloys, and thats not a joke. Especially the cheapo alloys ones are often quite a bit heavier than steelies actually, so beware if its weight you are looking to cut, it might just be a step backwards when put on a scale!
The alloys generally significantly lighter than steelies/cheapo alloys are specialised performance ones, but they tend to be expensive. Certainly not 300 quid for a set of new ones. I guess some second hand ones that are a bit beat up and have done some races maybe could be found for 300.
As, as I said above, steelies arent really heavier than normal alloys, even with "race" forged alloys or magnesium, you wont save 30kg on rims for this kind of car. Any rims you can fit are just too small to be very heavy, its borderline if the original rims even are 30kg in weight in total to begin with, of course making it impossible to save 30kg. You have to get larger, heavier dimensions like 18s, 19s at the very least (more likely 20s or above if originals are ok-ish) to be able to save 30kg in all. Cheers mate.
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@jamesbrook16 First, I want to thank you for giving me opportunity to explain this, as a former physics teacher it is very rewarding getting to do this again.
Secondly, dont feel bad about thinking its the time thats the limiting factor, its a very common mistake.
Now, with that said: since we have a fixed distance of runway, we are limited by that, not time. Which means that average speed is very important. If you do a 0-60 in 9 seconds, your average speed for those 9 seconds might only be about 40 mph, meaning you travelled 161 meters. This is how much you gain with a 60mph flying start compared to a standing one.
Now on the top end we already have 141mph, and want to get to 142. Lets say the average speed is just 141 to lowball it. This give us just 2.55 seconds of additional acceleration until the extra 161 meters are used up. Not much, right?
And yes, close to the true top speed, it can easily take 5-10 seconds between each mph gain in most cars. This car wasnt at its top speed, so it will accelerate quite a bit faster, but not more than one mph per 1-2 seconds for sure, which is why I said, 1 mph; 2 at the very most gain with a flying start.
Now you see why at least 3 miles or so is necessary with this car, the distance ticks by fast when trying to squeeze the last bit out.
Cheers.
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