2017 GSF (第84頁)

dlin4229
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2023-03-26 12:04

This RCF was equipped with smaller tires and a much less powerful engine but still ran about as fast as GT-R in Gunsai!!! 拇指向上

477ps, 1734kg, 255/35r19(F), 275/35r19(R)
power/weight=0.275, tire/weight=0.153, lap=26"642
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370Z: 390ps, 1480kg, 275/35r19
GT-R: 800ps, 1700kg, 275/35r19
S2000: 410ps, 1100kg, 265/35r18
M3: 435ps, 1540kg, 295/30r18
----------------------
370Z: power/weight=0.26, tire/weight=0.186, lap=26"793
GT-R: power/weight=0.47, tire/weight=0.162, lap=26"549
S2000: power/weight=0.37, tire/weight=0.241, lap=25"536
M3: power/weight=0.28, tire/weight=0.192, lap=25"946
----------------------

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dlin4229

dlin4229
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2023-03-27 2:14

In my opinion, less body rigidity cars need drivers to be more skillful. If you have good driving skills, less body rigidity or lighter cars can be faster!!!

More body rigidity cars are more suitable for average drivers like you and me thanks to more precise handling.

If you want both body rigidity and light-weight at the same time, you have to pay more money...

PS: I think LC500 could be even stiffer than many supercars, as LFA is built by 65% of carbon fiber and LC500 is still more rigidity than LFA!!! (I don't think most of supercars are extensively built by carbon fiber like LFA!!!)

Now, I suddenly think LC500 is really a bargain!!! (I cannot wait to see the next F car from Lexus!!!)

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dlin4229

dlin4229
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2023-03-27 2:53

内功 vs 招式

I had talked about this many times but I cannot help talking this AGAIN!!! 笑到噴淚

Body Rigidity = 内功. Japanese are good at 内功.

招式 is quicker and easier but why don't Japanese just focus on 招式??? 點點點

I think that's because Japanese are not THAT smart!!! 笑到噴淚

Although Japanese are not that smart, they're definitely not idiots!!! So, they will catch up eventually.... (They just learn slower)

However, once Japanese catch up, you will have no chance, as both 内功 and 招式 are equally important and most of people don't like 内功 (内功 is slow and painful!!!)

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dlin4229

dlin4229
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2023-03-27 6:56

Interestingly, GT-R is about as same size/weight as RCF...

However, RCF could be slightly more rigid than GT-R, as RCF is RWD only and GT-R is AWD(+150lbs).
In addition, RCF is a newer car... (i.e. newer technology)

RCF: 3902lbs, 185.4Lx72.6Wx54.7H
2021 GT-R: 3935lbs, 185.4Lx74.6Wx53.9H
2021 GT-R Nismo: 3867lbs, 184.6Lx74.6Wx53.9H (Again, we see some weight reductions on this supercar)

------------------------

Q60: 3778lbs, 184.4Lx72.8Wx54.5H
G37(coupe): 3633lbs, 183.1Lx71.8Wx54.8H

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dlin4229

dlin4229
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2023-03-27 13:12

Although LC500 is very heavy, it doesn't mean Lexus didn't do any weight reduction like supercars for LC500!!!

The below is what Lexus did on LC500 for weight reduction...

---------------------------

The chassis itself is extremely rigid, even stiffer than the celebrated LFA, although it doesn’t get a carbon-fibre tub, instead, using a medley of metals to boost rigidity throughout the body.

“We use aluminium for the doors, guards, bonnet and carbon-fibre plastic on top, while on the inside of the doors and the boot we use Carbon Sheet Moulding Compound (CSMC).

“We first starting using this material on the LFA, which we found to be very light and durable, and in the LC500 it’s actually exposed, due its superb look and feel”, said Ramaekers.

-----------------------------

That makes it 60 per cent more rigid than the GS performance sedan, and stiffer even that the highly-prized, limited-build LFA supercar.
(OMG!!! I already feel my GSF is a bit more rigid than my previous car 2007 G35S!!! I really cannot image how good LC500 will be, if I also put an Ohlins on it!!! 嚇到吃手手

)

I think LC500 is really great and DEFINITELY better than GSF!!! (Oh gosh!!! I'm really looking forward to the next F car from Lexus!!!

)

Again, numbers cannot tell everything!!! 真心不騙

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gary89089409

gary89089409
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836樓

2023-03-27 16:19

這位哥是怎麼了

dlin4229 樓主

I just provide some different opinions. Of course, I'm not always right!!![笑到噴淚]

2023-03-27 22:51

dlin4229

dlin4229
個人積分：978分
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2023-03-28 2:13

So, premium cars should still be a bit more rigid than non-premium cars, even though they both have similar weights, as premium cars could definitely adopt more weight-reduction, such as aluminum engine cover or trunk lid... 拇指向上

ES350: 3690lbs, 195.9Lx73.4Wx56.9H
Camry 3.5: 3595lbs, 192.1Lx72.4Wx56.9H

--------------------------

I think, Integra could be about as rigid as, or only slightly more rigid than Civic... Acura could adopt some weight reduction on Integra. So, Integra is about as heavy as Civic even though Integra is obviously bigger!!!

Integra: 3150lbs, 185.8Lx72Wx55.5H
Civic 1.5t: 3102lbs, 179.9Lx70.9Wx55.7H

PS: Of course, those weight reduction CANNOT reduce the weight dramatically, except fully carbon fiber implementation!!! (That's why LC500 is still SO HEAVY!!! 笑到噴淚

)

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dlin4229

dlin4229
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2023-03-28 3:07

So, which one you prefer??? Lighter cars or more rigid cars??? 笑到噴淚

Lighter cars = better performance(numbers), you can brag to your friends.
More rigid cars = inferior performance but can let you be more confident and safer. (Of course, I choose this one, as I never did 10/10th in my cars... 笑到噴淚

)

PS: Like I said... Everything has pros and cons... NO ONE is perfect!!! 笑到噴淚

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dlin4229

dlin4229
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2023-03-28 8:32

If you check my previous comments, you should find something as below...

2007 G35 + PSS10 : less rigid but stiffer suspension
(Feel more focused on straight roads. More immediate response and faster turn-in but feel vague at mid-cornering.)

2017 GSF + OEM suspension : more rigid but softer suspension
(Feel better on curvy roads. The more you push it the better you feel. Slower response but feel better at mid-cornering.)

I think stock LC500 vs stock GSF could be similar... Just now GSF could feel more like my previous G35S!!! 笑到噴淚

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dlin4229

dlin4229
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2023-03-28 10:15

The below is what I found in this link about Vehicle Torsional Rigidity

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In the simplest terms, vehicles that have high torsional rigidity deliver a superior ride, superior handling and better response to driver input. Improving the torsional rigidity of a vehicle allows the suspension to work more efficiently and predictably. Vehicles with high torsional rigidity will see more travel in the suspension, as the chassis isn’t moving.

Designing and building a chassis with maximum torsional rigidity and minimum weight is the desire of every chassis engineer. Advances in materials and manufacturing have allowed automakers to make vehicles that offer four to 10 times the chassis rigidity of cars built 30 years ago.

-----------------------

Believe it or not... In my previous G35S, sometimes I did notice some little bounces from the CAR BODY, not from the suspension. Those bounces were very high frequency which were not like the low frequency bounces from the suspension!!! 笑到噴淚

In addition, those high frequency body bounces only happened when my previous G35S became older!!! (I only found those bounces when G35S was about 7 year old. So, car body could become softer when the car get older... 真心不騙

)

Guess what... After I'd added a front strut bar for my previous G35S, I never found those little bounces again!!! 拇指向上

PS: I didn't add any strut bars for my current GSF yet. I definitely drive my GSF harder than G35S. Hope my GSF will never get those high frequency bounces (from its body) in the future... (Knock on wood!!! 笑到噴淚

)

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