Comments by "geemy" (@geemy9675) on "Engineering Explained"
channel.
-
3
-
3
-
3
-
3
-
3
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
@techno1561 yes in emergency situation in your daily driving abs should perform better because you don't know the exact grip, your tires are most probably not up to optimal temperature, and there's also a high chance that you have slightly different grip on every tire/patch of road, and also that your brake front/rear bias is not perfectly calibrated for the current conditions, so abs will extract the most braking power from each tire. on a track threshold braking makes more sense than on the road because you are doing laps around the same track, you get to test the grip before every corner, the grip is more consistent than on the road, you know exactly were you are going to brake and you can push the limits further and further on every lap, and of course because you are trying to improve your skills in a controlled environment
for emergency braking I'd rather rely on abs giving consistent results, than trying to improving the braking distance marginally in the best case, but risking a longer distance because you didn't get it perfectly right. you don't get the chance to do another lap and try again
2
-
2
-
2
-
2
-
2
-
2
-
2
-
@KennethCherisol yes once your remove the engine and the steering column from the hood, you have a big crumple zone and you can shorten the hod, bring the cab forward, so its big changes
I agree Variable steering is needed for yokes, but could be beneficial to steering wheels too ?
today's steering wheels quite different form those 100years ago there was no power steering, steering wheels where huge and very thin and you needed several full turns to steer , , and cars where more like horse cariage
, steer by wire and variable steering is just another evolution
Future is different, Tesla is rumored to have 4 wheel independent steering in the cybertruck, so yes steer by wire means you can have just one motor on each wheel, no rack, pinon etc. you can have big storage in the frunk and/or shorten the hood. EVs are slowly moving moving to 4 independent motors/suspensions/brakes. everything by wire. it will have a lot of advantages
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
@Tosix98 small but powerful! Bugatti did their homework , picking very powerful cells and sizing the battery to be just big enough to achieve the power they wanted, with virtually no impact on weight compared to the chiron and managed to make a NA plugin hybrid with same or even lower weight and 15-20% more power. this is very unique in the hybrid world I can't name a single hybrid, let alone a plugin, that weighs less than it's gas counterpart/predecessor. also smart aero engineering with the massive diffuser, eAWD/driveshaft delete, lower roof/narrower cabin
designing the battery, they did not care about energy but power and weight. this is the only way for a very high performance hybrid or even EV. performance car are not about ramge. the battery density is low but 29C discharge rate is extreme. for comparison, the plaid powertrain is limited by battery output at 7.6C. it's a 5x smaller battery that m achieves 80% of the power. of course, there has to be compromises..
-energy density is 2x lower so the power/weight gain is about x2. that's still a 200kg weight saving. electric range is compromised but who cares.
-the second compromise is like for any hybrid with powerful electric motors, the sustained power output once the battery is drained you have lost 45% power. if 250 is about the speed that can be achieved on gas alone with 1000hp, driving any speed over 250 will start draining the battery. the faster you drive the faster battery drains. this is probably one of the reason why the limited the top speed. 1000hp @250moh means 1350hp at 276mph/445kph
this means about a capacity of a little under 5 min of top speed if the battery was full and depleted to 0%. this is actually not so bad when you consider a chiron would drains it's tank in 10- 15 min at that speed anyway.
realistically, no road or track exist to achieve this anyway.
they have gone to a (base) chiron that can go 260 for 10 min at best to a tourbillon that can go ~280 for 5 min then 250 for another. this doesn't even have an impact on a cannonball race, even the most reckless driver won't be able to drain the battery
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
2
-
1
-
1
-
1
-
1
-
1
-
1
-
1