Tt. & dt. 25

[PR1VATEJ0KER]

Ive never seen a Time Trial with all the times so closely packed together, usually there may be 1 second gap between 1st and 20th
In the Kart TT there is a gap of .913 between actual first place and 250th.
I even found four guys with the exact same time!

225 	jptk524355 	0:33.116 	15/12 13:02:04
226 	jpstymotorsport 0:33.116 	16/12 10:00:00
227 	auJVDBS_999 	0:33.116 	20/12 12:31:58
228 	frSkilledChara 	0:33.116 	22/12 11:55:56

 

[TumbleDry]

I noticed something while watching the replay of the accused cheaters... Their engine´s missfire in mid corner sometimes

So what I did was to add all the ballast I could to the rear of the car and guess what, I got that missfire sound. So it has something to do with ballast I guess

When it comes to real physics (yes this is a game I know), adding weight increases the pressure on the tires giving them more grip, BUT, the coefficent of friction from the tires decreases with added weight so that the more weight you put on a tire the less it increases in grip. The added weight also increases the sideway forces so the end result is that you can´t take the corner at the same speed. Downforce works magic because it adds "weight" felt by the tires but it does not add weight to the sideway forces. The reason why you lean outwards in a gokart in real life is not to increase grip on the outer wheels (because inner grip decreases and its the total of all wheels that is important to reach maximum corner speed), but to lift the inner rear wheel so that it can spin freely (because theres no differential on a gokart)

So what they are doing is simply some kind of bug

Thanks for the physics lesson 👍 I did not know that.

 

[GoSpeedRacer]

^That was an interesting physics read. I actually add a little ballast and move it all the way to the front for some of my cars that do not have front downforce. It helps increase the grip a little for better cornering. 👍

 

[numbnuts70]

@privatejoker,yeah,its mad aint it.i think im in a group of three on 33.078.
the karts,by their very nature,and the type/length of track,the times are gonna be close.
i think i mentioned it in one of my posts earlier.
ill have to get back to this cos i havent played it in a while and i know theres a couple of tenths more if i can string all my good sectors together, lol.

 

[Olof Eriksson]

^That was an interesting physics read. I actually add a little ballast and move it all the way to the front for some of my cars that do not have front downforce. It helps increase the grip a little for better cornering. 👍

Actually it doesnt increase grip (unless the game differs from reality), it does change the load bias and so the handling of the car though. What happens with grip is as I described above, the total grip is less compared to the weight of the vehicle

You can achive a similiar result by changing the springs and anti roll bars if theres a specific point in the corner you think you are loosing front grip

It is the difference between the springs (or the weight felt by the tires) that dictates the handling overall. Anti roll bars are like springs that only works when the car is trying to move sideways (in other words, cornering). So if it understeers in the middle of the corner but not in entry or exit you want to change to a softer anti roll bar in the front or a stiffer in the rear. Stiffer springs transfer more weight to the wheel than softer springs, if theres a combination of soft and stiff springs that is. Theres no difference in weight transfer between 4 soft and 4 stiff springs, its only when you use different springs you can get a dynamic weight transfer between them

The tricky thing with aerodynamics is that its dynamic The faster you go the more you change the balance of the car if you dont have equal downforce creating wings in the front and the back. So it may oversteer in 50mph but understeer in 200mph

I have a hard time driving heavy downforce cars because of this reason, for me they are unpredictable and it takes a lot of time to learn how to drive them while a non aero car I can get in and set fastest lap time in three laps

 

[Tidgney]

Had a quick 'proper' go at go-karts tonight, I'm only loosing out on acceleration it seems which is a combination of transmission and low hp of my kart i guess?

 

[GoSpeedRacer]

Actually it doesnt increase grip (unless the game differs from reality), it does change the load bias and so the handling of the car though. What happens with grip is as I described above, the total grip is less compared to the weight of the vehicle

You can achive a similiar result by changing the springs and anti roll bars if theres a specific point in the corner you think you are loosing front grip

It is the difference between the springs (or the weight felt by the tires) that dictates the handling overall. Anti roll bars are like springs that only works when the car is trying to move sideways (in other words, cornering). So if it understeers in the middle of the corner but not in entry or exit you want to change to a softer anti roll bar in the front or a stiffer in the rear. Stiffer springs transfer more weight to the wheel than softer springs, if theres a combination of soft and stiff springs that is. Theres no difference in weight transfer between 4 soft and 4 stiff springs, its only when you use different springs you can get a dynamic weight transfer between them

The tricky thing with aerodynamics is that its dynamic The faster you go the more you change the balance of the car if you dont have equal downforce creating wings in the front and the back. So it may oversteer in 50mph but understeer in 200mph

I have a hard time driving heavy downforce cars because of this reason, for me they are unpredictable and it takes a lot of time to learn how to drive them while a non aero car I can get in and set fastest lap time in three laps

Cool, thanks for the updates. 👍

When you wrote this though:

"When it comes to real physics (yes this is a game I know), adding weight increases the pressure on the tires giving them more grip, BUT, the coefficent of friction from the tires decreases with added weight so that the more weight you put on a tire the less it increases in grip."

I assumed that adding the little bit of weight (15-20) all the way up front was increasing the grip, but if I put too much weight, it would interfere with the friction coefficient. So, that means you are saying that any added weight interferes with the friction coefficient or is there a crossover point where weight vs grip will help?

 

[PR1VATEJ0KER]

Had a quick 'proper' go at go-karts tonight, I'm only loosing out on acceleration it seems which is a combination of transmission and low hp of my kart i guess?

I got down to 32.8 with a new kart.
Turismo-Lester lent me his 24hp one, and I knocked 3 tenths off my best
I 'permanently borrowed' the 24hp kart soon after so I can share that online 2moro.

 

[DJW_GT]

I got down to 32.8 with a new kart.
Turismo-Lester lent me his 24hp one, and I knocked 3 tenths off my best
I was gifted a 24hp kart soon after so I can share that online 2moro so you can use it.

I thought you had a 32.9 before, so didn't you only knock off one tenth with the new kart, or am I mistaken?

Dan.

 

[IMMORTALPILOT]

What Weight balance and weight and Gears you make guys?
My kart is terrible in the corners.
i drive only 34,00
And the first can drive alomost all corners full speed when i make it i strulgling out.

 

[PR1VATEJ0KER]

I thought you had a 32.9 before, so didn't you only knock off one tenth with the new kart, or am I mistaken?

Dan.

Hey Dan,
I got down to 32.8 with a new kart, Im down to 32.5 with the 24hp kart, which has 800miles on it, fullybroken in.

What Weight balance and weight and Gears you make guys?
My kart is terrible in the corners.
i drive only 34,00
And the first can drive alomost all corners full speed when i make it i strulgling out.

I have no ballast on my kart, I was geared for max speed 69 mph
I have experimented with from 2 kilos all the way up to 100 kilos of ballast front and back, any ballast is making me slower


If anyone wants to use the 24hp kart add me, Im putting it online now.
PR1VATEJ0KER
---------^
Thats a Zero

 

[Lorenzo1201]

I got down to 32.8 with a new kart.
Turismo-Lester lent me his 24hp one, and I knocked 3 tenths off my best
I was gifted a 24hp kart soon after so I can share that online 2moro so you can use it.

Hallo mate! Can I ask for your PSN friendly? I'd like to use your 24 hp kart

 

[PR1VATEJ0KER]

Hallo mate! Can I ask for your PSN friendly? I'd like to use your 24 hp kart

I'll add lorenzo1201 one sec

 

[Olof Eriksson]

Cool, thanks for the updates. 👍

When you wrote this though:

"When it comes to real physics (yes this is a game I know), adding weight increases the pressure on the tires giving them more grip, BUT, the coefficent of friction from the tires decreases with added weight so that the more weight you put on a tire the less it increases in grip."

I assumed that adding the little bit of weight (15-20) all the way up front was increasing the grip, but if I put too much weight, it would interfere with the friction coefficient. So, that means you are saying that any added weight interferes with the friction coefficient or is there a crossover point where weight vs grip will help?

It is not easy to understand at first, it took me some time to get all the pieces together

Any weight added will lower the friction coefficient, any weight added will lower the corner speed as long as the weight affects both download and lateral (sideway) force. Its the relationship between added grip and friction coefficient that gets worse the more weight you add, its just for explaining why theres negative effects to grip even if Newton's laws tell you differently

The possible crossover point might be if you use a tire that is not constructed for the situation its in or if the surface is looser than the tire and the tire is constructed for the surface, but as long as you are fairly right theres no total advantage of adding weight to a vehicle

It CAN however be beneficial to add weight to a gokart because you have no other or limited means of adjusting the handling characteristics. For example you can trade some potential corner speed for quicker turn in, in some cases, by adding weight to the front, or you can help traction during acceleration by adding weight in the rear. Also adding weight might make the gokart behave in a way that suits you and your skills, for example if you are strong with accelerating but weak in turning in. In other words adding weight is to be trying to fix a broken design

In real life theres rules of how much a gokart plus the driver has to weight so if you are lighter you have the advantage to be able to choose where on the kart the weight is placed and still have the same corner speed as the rest.

 

[StevenDunn99]

Re getting a 24hp kart;

it is a lot like watching paint dry.... but if you want to get mileage on your karts then do not forget that you also have the option to let Bob do that for you via the Bspec seasonal.

 

[sgllocal]

my pdi kart is 24bhp too. its done just over 800 miles. it says 23bhp on main screen but when clicked it says 24bhp.

 

[numbnuts70]

If anyone wants to use the 24hp kart add me, Im putting it online now.
PR1VATEJ0KER
---------^
Thats a Zero

hi,i know its cheeky and i hardly know you but could i have a go at that as well??
ill try to add you,or you could add me, numbnuts70.

 

[eclipsee]

These are my settings for Kaz's GT-R TT#25:

Aero 35/60
LSD front 5/20/10 rear 10/40/20
Suspension:
60/0
20.0/5.0
8/3
6/1
7/1
1.4/1.3
-0.20/-0.10
Brakes 8/10
Gearbox:
First of all set final gear to 3500, later, max speed to 200 km/h and later ...
4073
2986
2511
2120
1786
1515
2500 (final gear)
Active steering ON is 0.4~0.5 seconds faster than active steering OFF with this setup.
There's an optimal 1:58.6xx in a brilliant lap, I haven't played with ballast yet, I suppose there's some tenth to gain with that too.

Merry Christmas and Happy New Year 2012.

 

[Lorenzo1201]

These are my settings for Kaz's GT-R TT#25:

Aero 35/60
LSD front 5/20/10 rear 10/40/20
Suspension:
60/0
20.0/5.0
8/3
6/1
7/1
1.4/1.3
-0.20/-0.10
Brakes 8/10
Gearbox:
First of all set final gear to 3500, later, max speed to 200 km/h and later ...
4073
2986
2511
2120
1786
1515
2500 (final gear)
Active steering ON is 0.4~0.5 faster than active steering OFF with this setup.
There's an optimal 1:58.6xx in a brilliant lap, I haven't played with ballast yet, I suppose there's some tenth to gain with that too.

Merry Christmas and Happy New Year 2012.

Thanks a lot mate! It is a pleasure some help from the 1°👍

 

[Kilmore]

Eclipsee that's awesome, now I'm sure I can improve on my 2.02,4 , would be a nice holiday gift to break into the top 256 ;-)

 

[PR1VATEJ0KER]

Thanks eclipsee, I will try that

 

[numbnuts70]

👍
Cheers for posting the set-up eclipsee.
will give that a go,ill hopefully improve from my 2.01.

 

[ducagp27]

Thanks eclipsee, you are number 1!!👍

 

[Doodle]

Aero 35/60
LSD front 5/20/10 rear 10/40/20
Suspension:
60/0
20.0/5.0
8/3
6/1
7/1
1.4/1.3
-0.20/-0.10
Brakes 8/10
Gearbox:
First of all set final gear to 3500, later, max speed to 200 km/h and later ...
4073
2986
2511
2120
1786
1515
2500 (final gear)
Active steering ON is 0.4~0.5 seconds faster than active steering OFF with this setup.

 

[R_a_c_l]

Thanks eclipsee, and very good job

I don't have play very much at this TT, I don't think play again in this TT, I don't know why not.

 

[eclipsee]

Thanks for your kind words. 👍

BTW, I've missed some important info, do as many km's as possible (B-Spec recommended) to increase the BHP and torque to the max, I'm not sure how many but I would say around 400 km's, later do a change oil, I'm running with this:

503 BHP / 599 PP / 85.1 kgfm / Power Limiter 58.6% / High RPM Range Turbo Kit (#3)

I don't think I'll give it another try, I'm discovering the online races.

 

[numbnuts70]

thanks again eclipsee.i went from a 2.01.4 to a 2.00.5 in just a few laps!
wicked set-up mate

 

[failing_finn]

Suspension:
60/0
20.0/5.0
8/3
6/1
7/1
1.4/1.3
-0.20/-0.10

Noticed something like this while watching your replay. Must try your tune, thank you very much!

 

[Timppaq]

Good job Ramon, you have the speed build in you! 👍 Also very kind of you to share your tunes, even if I know you're not a great believer for a tune to make miracles.

 

[Herman79]

Tested eclipsee:s settings, thanks man, 👍 and after getting used to it I shaved 0.5s of my time. Not a perfect lap, need some more laps to get to my maximum I think.

Anyway, listed on 149:th spot at the moment and looking at the country flags I'm fastest i Sweden right now. But I´m sure there must be faster guys in this country than me.