JB New Section........ Part 4.....

[integram]

morning guys...............

 

[tykiasu]

heard is all over the web....playboy sial this edison.

 

[calvin9683]

he's one lucky bast@rd i must say!!!!
wahahahahaha

 

[tykiasu]

walao, good morning, good afternoon and good night only ah today? wahahaha... everyone either still holiday mood ka or not back in office yet?

 

[alexklg]

hmmm... frank MIA.... cheifoooooooooooooooooooooooo

 

[persis]

my mum oso dun like d wavey line.......

 

[normality78]

btw, frank, you remember we discussed about the racing harness the other day... you said that its not legalised cause it may break your bones during an accident... now i think back.. why ALL racing cars use racing harness if it will break your bones? doesn't make sense right?

I remember last time a G2C friend told me. When using racing harness, you must pull the harness very tightly that you cannot even move forward an inch... if you do that, you won't break your bones. Whereas, if you just drape it around like an accessory, it will break your bones during a hard impact...

And one more thing, those 4" harness are FIA approved racing harness and is a must for any competition.

The reason why its not for normal road cars is maybe hard to get out off i guess. its the same for those roll cages. You might be trapped in it instead during a car crash.

yup. what you said does make sense but i dun really agreed IMO.

1st we must understand how those racing car being construct and factor that they had put in. Lets dump F1 aside as they do have crumble zone (all F1 chasis have to send to FIA for crash test). So we looking into touring car types.

Lets take note, those car majority if not all was already chasis lighten. So the speed momentum wasnt as great as our normal car. Again, with ligthen chasis, braking efficiency does improve greatly as well. It will be able to decrease speed greatly in shorter distance to compare with our normal road car.

Lets see in another point of view. Those car only race in controlled enviroment (circuit). When they impact/crash, its either skid off over the corner and crash to the crash barrier or bump with others car and skid off. Now, think of this. When the car skid, they brake. Light chasis, they manage to sheer off great amount of speed. Thn went into sandtrap/graveltrap, again, another step decrease speed thn hit (even head on) with crash barrier which normally constructed by rubber material. So with all these factor, alot of force was being absorb before the the human body.

Also should the car skid sideway and being bang from the incoming car, its more on seat design and side roll bar job thn harness. Thn we look into normal city road. Whn we accident, normally its way too late scenario. Either front car accidently stop, we didnt see corner coming or opp car overtaking. All these is caught us on suprise. And by the time we apply brake, most likely is 100% step onto brake pedal and tire streeching all the way till bang.

So from there u can imagine the speed we carry and the impact greatness. Due to our car is normal street car, the full weight momentum is there. And the object that we hit, its like you're crashing into stationary object. Compare with the circuit or racecar impact, don't u think its very different?

what your fren said is right. Whn using harness, you must strap till u cant even move. that why u see those race driver, after they strap they will try to move and see is there any freeplay. Also, the size of harness and how u mount your harness. Remmeber i told you your harness have to be mounted onto chasis instead tie with the seat together?

Hard to escape is more on buckle design and the reason i was being explain by SMA (singapore motorsport association) for banned rollcage was, not all rollcage is FIA approve and or tested. Each have have unique inroom design and each type of rollcage (4, point, 8 point) have to be crach and test thn only can be certified. With self made or normal after market rollcage, whn happen accident its more prone to break on joint section and become fatal object (broke out into shape object and pierce thru) whn accident happen.

of course, not saying with harness or rollcage, accident happen sure die or break chest. its more on how u impact and the speed being carry. Of course, there is no me right or you wrong. Its how we all look into it only. Afterall, don't those race car fella if bang on highspeed, still masuk hospital with broken ribs/hand/legs? whahahahahah

 

[calvin9683]

frank frank...
macam essay wei!!!
i finally understand how u guys feels when i post a fuckin long post everyday!!!
wahahahaha......

at the end of the day......
its still luck la....
how safe oso will die....if u unlucky....
now unsafe oso might not die.....if u r lucky....
wahahahahaha......

guess dat's wat keon is thinkin la....
take out the fucking air bag....
wan die...how oso will die...
wahahahahaha

persis...
ur mom steady la...
fast fast ask her sponsor la...
grab the opportunity la.....
just like me...
my mother dun like black....
n i kindda like white suddenly...
straight ask her sponsor..
both ppl happy....
n i take my $$$ buy bodyparts....
waakakakakakaka

diu lo...
sound like "pai ka zai".....
wahahahahaha

 

[ashween]

sueh sueh sueh.......

 

[normality78]

wahahha, come come, ash.... lets open table....

 

[normality78]

calvin,
IMO is we cant always look at racecar as example. coz too manything we do not know on their car to determine can it use on ur car

 

[alexklg]

we all should go up malacca and gamble with ash....

 

[alexklg]

frank,

I don't think so. Why don't they use normal seatbelts for racing cars then instead of FIA approved stuff? Racing harness are supposed to keep you in your seat, so that during an accident or big impact, you won't be thrown around in the car or worse, fly out of the car. I don't think normal seatbelts are able to do so, if it is able to do so, don't need racing harness at all.

I believe, racing harness, when used correctly i.e. pulled tightly so that you won't move, will protect the user better than a normal seatbelt.

 

[persis]

calvin..... my mum got no money.... haha.....
ething oso i nid 2 bao ka liao....

 

[normality78]

Hm... should i recall correctly, there is some championship cup was using stock seat belt. hehehehe.

Whn to use those harness, i do think FIA do have some rules. Like maybe reach which catergory of speed thn need to use. Its like drag race. Once the machine able to hit 9sec, rollcage is compulsary and parachute. At least its in US/UK rules.

why racing doesnt use stock seatbelt i guess its very much depends on the material use to fabricate seat belts. Whn come to stock car manufacture, cheapest is the main prior. As you mentioned, probably wun be able to hold user that well hence it explain why it wasnt use on racing. But on normal application, using those harness may overkill in terms of functionality and cost. All the seatbelt need to do is hold and not the user fly out. Thats it.

this is my guess. maybe those harness withstand certain heat degree from fire? Maybe those harness belt is more strong and hard to cut off from sharp object? Also we didnt know does racing suit does have some padding so protect? Maybe those harness is to avoid user get throw around whn car terbalik?

what you said i agreed though. Whn use correct, it shld be better. There must be several reason why they choose to use harness for racing after weighing the pro and cons

but thn i think on this. on normal seat belt, (to those who accident before), whn u kena hold by seatbelt after a crash, u will find ur chest area pain or some even blue black. Imagine if u got harness strap on both chest. I do remmeber i saw reports of dead result ori seatbelt fracture chest ribs or internal injure.

Anyway all this is based on guessing. We dont have the test and satistic to back up. why dun we write to Mythbuster. whahahaha. Ask them do a test on this. Will be very interesting to find out.

 

[normality78]

This is what my sifu sent to me. I didnt read i must admit. hehehehe

http://www.metronypca.org/Technical/Safety-Harness/Competition_Instructions.pdf

 

[normality78]

my sifu 1cents comment.

Go with a 5 or 6 point over a 4 point. get without the submarine strap the lap belts ride up due to the tension from the shoulder straps. Not only is this relatively uncomfortable but also unsafe. In the event of an accident there is a real possibility of sliding under the belts, if you're lucky enough to not slip underneath you run the risk of cracking ribs or serious internal damage

Buy with a feature into the belt whereby one of the shoulder straps is doubled over within a plastic enclosure. Thus when you get into an accident the force of your body causes the belt to pull on the enclosure such that the plastic snaps and the belt is allowed to unfurl by an inch or so. As a result, instead of your body snapping to a hault it is allowed to decelerate a bit. Furthermore, it allows your body to slightly roll to one side which also assists in lessening the blow

2" belts are not legal in most motorsport that require harnesses. The additional width greatly increases the strength of the belt...neither belt will snap, however, stretching of the belt is also consideration. Also, a 2" belt does not distribute the force over as wide an area as a 3" belt. You are more likely to break your hip bone or shoulder blade with a 2" belt.

 

[MiOKu]

hmmm...
i totally agreed with frank...
both has pros and cons....
on track car they dun need to move their body during a race...
for example leaning front to take something or turning back to see car etc...
so normal seat belt give u freedom in the car while protects u....

as frank mention the speed is fast but the decrease fast as welll....
all kind of safety measure is provided in the track...
not like our normal street road...
as mass is smaller therefore momentum is less....
from the conservation of momentum equation
m1v1 = m2v2
m - mass
v - velocity

even both car hit at the same speed but the mass play a big role....

and we seriously cant compare normal street car and a track car...
for example track car got engine cut off and fire extinguisher...
but we dun have....

the harness is stronger but if u stuck during an accident people will also have hard time to cut the belts and save u during that emergency....
not like in the track where they are all well prepared.....

altough it is fia approve but i think is only track use purpose...
i dun think fia approve it for street use....
(this not that sure....)
imo all these factor really make some differences....

 

[alexklg]

frank, there is free play if using normal seatbelts. During hard braking, you will be thrown forward, the seatbelt thing will only hold you up after it detects a fast release of belt. That's why can feel chest pain cause it is sort of like hitting the seatbelt.

For racing harness, if held down tightly and properly, the person won't "hit" the seatbelt plus the force acting on the person's body is divided into 2 straps of harnesses which will distribute the force all over the entire harness rather than the single normal seatbelt.



the article your sifu gave.... freaking 73 pages....

 

[normality78]

whahahaa.... sampai keluar formula equation.
m1v1 = m2v2
m - mass
v - velocity