ABS, Merita sau nu
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ABS, Merita sau nu
chiriac.costin |
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#121
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Dacia
Logan Ambition
- CT 01 POL
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shimpu |
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#122
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Membru incepator Group: Members Posts: 18 Joined: 9 March 05 ![]() |
nu aberam deloc. Sunt constient de utilitatea unui sistem ABS, dar cel implementat pe logan nu exceleaza. daca ar fi avut shi ebd....ar fi fost cu totul alta treaba. Pana si pe acest forum cei care au abs pe logan nu sunt tocmai multumiti, deoarece marste distanta de franare (culmea). Eu am condus passat shi franele numa' moi nu erau..>> Tu ai cumva ABS pe logan?
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LOGAN
Laureate 1.4 -Marine
- BV-09-DVI
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chiriac.costin |
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#123
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
QUOTE(shimpu @ 16 Mar 2005, 13:25) nu aberam deloc. Sunt constient de utilitatea unui sistem ABS, dar cel implementat pe logan nu exceleaza. daca ar fi avut shi ebd....ar fi fost cu totul alta treaba. Pana si pe acest forum cei care au abs pe logan nu sunt tocmai multumiti, deoarece marste distanta de franare (culmea). De ce o tot tii cu "daca ar fi avut shi ebd".Tu nu stii sa citesti???? De unde ai tras tu concluzia ca Logan nu are EBD??? Toata lumea scrie ca ARE EBD tu scrii "daca ar fi avut shi ebd"!!!!! |
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Dacia
Logan Ambition
- CT 01 POL
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shimpu |
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#124
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Membru incepator Group: Members Posts: 18 Joined: 9 March 05 ![]() |
nu reiese din nici un catalog dacia ca logan are EBD pe langa ABS. Daca presupunem ca are inseamna ca tot nu e in regula ceva sa cresca distanta de franare fata de modelele fara abs. Am vazut pe VOX la Auto motor si sport (varianta in lb germana) test comparativ de franare intre logan si golf V, efectuat pe circuit la Nurburgring. Rezultatul a fost dezastruos pt Logan. Ei au facut acest test tocmai pentru ca ambele au acelasi modul electronic de la bosh ver.8. Deci un simplu modul abs nu face masina mai sigura. Sunt multi alti factori pe langa modulul electronic care fac diferenta, plecand de la cauciucuri si terminand cu intreaga instalatie de franare.
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LOGAN
Laureate 1.4 -Marine
- BV-09-DVI
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klaus |
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#125
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![]() 步步 Group: Moderatori Posts: 19.062 Joined: 4 August 02 From: Bucuresti ![]() |
Ia citeste matale acilisea
http://www.daciaclub.ro/index.php?showtopic=10521 si pe urma mai da o raita pe aici |
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Scenic III 1.9 dCi
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- - E mult mai bine să mă înșel din prea multă suspiciune decît din prea multă naivitate. - Cristoiu
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andreic |
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#126
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![]() Membru autentic Group: Members Posts: 415 Joined: 18 January 05 From: Bucuresti ![]() |
Oricun parerea mea care nu am ABS pe Lgn este ca se merita sa il cumperi impreuna cu schimbarea cel putin pe fata a cauciucurilor.
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Dacia
Logan
Ambition 1.6 mpi
- B-xx-yyy
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chiriac.costin |
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#127
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
QUOTE(shimpu @ 16 Mar 2005, 13:32) nu reiese din nici un catalog dacia ca logan are EBD pe langa ABS. Daca presupunem ca are inseamna ca tot nu e in regula ceva sa cresca distanta de franare fata de modelele fara abs. Deci masinile echipate cu ABS au franarea mai slaba decat cele fara nu???? Esti foc mestere!!!De unde le scoti bai tata???? A fost o discutie intreaga referitoare la EBD.Citeste aici http://www.daciaclub.ro/index.php?showtopic=10521 |
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Dacia
Logan Ambition
- CT 01 POL
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pabloescobar |
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#128
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Membru incepator Group: Members Posts: 3 Joined: 23 February 05 ![]() |
Nu inteleg. Pai daca atat GolF V cat si Logan au acelasi ABS BOSCH 8.0 ar trebuie sa franeze la fel. Altfel inseamna ca mai intervin o serie de factori: cauciucuri diferite, greutati diferite -> inertie diferita etc.
Daca doua calculatoare cu acelasi tip de procesor si nu au aceeasi viteza de procesare inseamna ca buba e la placa de baza, memorie, HDD, placa video etc. Asa si aici: daca ABS-ul e la fel inseamna ca sunt bube in alta parte. Acu am si eu o intrebare: Masinile aveau aceleasi cauciucuri sau Golf-ul avea Michellin si Logan-ul Montana ? |
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vv |
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#129
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![]() dilbert.com Group: Members Posts: 1.080 Joined: 10 June 04 From: Bucuresti ![]() |
Ia citeste mataluta si aici un pic:
http://www.se-r.net/brakes/abs.html QUOTE Some myths about ABS: With ABS I came stop faster. - Not necessarily. On a wet road, you MAY be able to stop quicker because your wheels are not locked up. However, in several conditions you can stop faster by locking up the wheels. One example is in deep snow. If you lock the brakes you create a wedge effect and stop quicker. Usually ABS distances are a tad shorter (10 feet) than non-ABS brakes, however, ABS gives you more steering ability then non-ABS brakes, the real advantage. In general ABS-ul ajuta, dar nu pe toate suprafetele. Si pe suprafata perfect uscata - nu prea. BTW - da, ABS-ul de pe logan are EBD - mai precis are 4 valve si 4 senzori, si controleaza individual pe fiecare roata franarea. Da' ce legatura are asta cu faptul ca din motive de 'montana', distanta de franare era mai mare PE PISTA USCATA? |
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Renault
Grand Scenic
2008
- B.00.XXX It is final proof of god's omnipotence that he needs not exist in order to save us.
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andreic |
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#130
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![]() Membru autentic Group: Members Posts: 415 Joined: 18 January 05 From: Bucuresti ![]() |
Itrebare: Golf v nu are cumva pe spate discuri ventilate? Si atunci lucrul acesta nu influenteaza calitatea franarii?
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Dacia
Logan
Ambition 1.6 mpi
- B-xx-yyy
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chiriac.costin |
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#131
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
Masinile se testeaza cu cauciucurile oferite de producator.Eu citisem mai demult ca singura problema la Logan cu ABS sunt cauciucurile Montana in rest nimic.De unde o scot astia ca Logan cu ABS franeaza mai nasol decat aia fara....nu pot sa-mi dau seama.Eu sunt super multumit de frane.
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Dacia
Logan Ambition
- CT 01 POL
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chiriac.costin |
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#132
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
QUOTE(vv @ 16 Mar 2005, 13:45) Ia citeste mataluta si aici un pic: http://www.se-r.net/brakes/abs.html In general ABS-ul ajuta, dar nu pe toate suprafetele. Si pe suprafata perfect uscata - nu prea. Da' ce legatura are asta cu faptul ca din motive de 'montana', distanta de franare era mai mare PE PISTA USCATA? Nu inteleg de ce zici ca nu ajuta pe suprafata uscata.Daca franezi violent,chiar si pe suprafta uscata,la o masina fara ABS ti se vor bloca rotile riscand sa te duci in derapaj si sa te opresti cu ajuttorul celui din fata. Cauciucurile conteaza enorm chiar si la masinile dotate cu ABS dar nu prea conteaza pe uscat,e adevarat.Daca esti pe suprafata neaderenta cum e gheata,pietrisul si ai cauciuri de proasta caliate nu te mai salveaza nici mama ABS-ului. |
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Dacia
Logan Ambition
- CT 01 POL
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vv |
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#133
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![]() dilbert.com Group: Members Posts: 1.080 Joined: 10 June 04 From: Bucuresti ![]() |
Ma rog. Impresia mea era pe dos - si anume ca pe gheata nu te salveaza nici mama cauciucului pe cand pe uscat, conteaza.
Oare de ce schimba aia de la F1 cauciucurile de atatea ori, daca nu prea conteaza pe uscat? pe suprafata uscata (nu praf/nisip!) nu prea intra ABS-ul. Acuma nu stiu ce se intampla daca vrei sa te opresti de la 150 km/h, dar in conditii normale, nu intra. Si banuiala mea este ca si daca patinezi, 'pe uscat' aderenta e in continuare destul de buna. Eu asa stiam, ca in general pe uscat (si in conditii normale) e cam tot aia. This post has been edited by vv: 16 Mar 2005, 14:15 |
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Renault
Grand Scenic
2008
- B.00.XXX It is final proof of god's omnipotence that he needs not exist in order to save us.
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chiriac.costin |
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#134
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
QUOTE(vv @ 16 Mar 2005, 14:12) Ma rog. Impresia mea era pe dos - si anume ca pe gheata nu te salveaza nici mama cauciucului pe cand pe uscat, conteaza. Oare de ce schimba aia de la F1 cauciucurile de atatea ori, daca nu prea conteaza pe uscat? Ai foarte mare dreptate dar eu ma refeream la mers normal si nu sa intri in curba cu 280 km/h ![]() Cum sa nu intre ABS-ul pe uscat.ABS (Anti Blocking System) inseamna ca atunci cand pui frana violent rotile nu se mai blocheaza iar masina nu mai lasa urme negre de cauciuc pe asfalt.Urca-te intr-o masina cu ABS si franeaza de la 60 cu pedala la fund.Poti sa faci un test.Franeaza cu ABS si dupa aceea scoti siguranta de la ABS si o sa vezi diferenta. This post has been edited by chiriac.costin: 16 Mar 2005, 14:22 |
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Dacia
Logan Ambition
- CT 01 POL
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vv |
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#135
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![]() dilbert.com Group: Members Posts: 1.080 Joined: 10 June 04 From: Bucuresti ![]() |
costin, frana aia nu baga un bat intre spitele rotii sa o blocheze instant. E o frecare acolo, roata se mai invarte. La a mea nu am observat sa intre ABS-ul pe uscat, hai ca o sa fac testul (da' am (inca) pneuri Montana, si asta o sa conteze ceva...).
Am povestit aici pe forum cum am patit-o la Unirii - am apasat frana la max 30km/h si masina pur si simplu nu raspundea la comanda, mergea in continuare ca si cum nu as fi franat absolut deloc. Am intrebat si pe formul si alti prieteni care se pricep, concluzia a fost "nu te ajuta nici mama cauciucului de iarna in situatia aia". Daca ai gheata lucie pe jos, cauciucul nu are aderenta - asta e. Gata, ma retrag, ca nu am date concrete. Daca am timp caut pe net un studiu despre distantele de franare cu/fara ABS, pe diferite suprafete (nu sunt sigur ca o sa gasesc da' cine stie). Uite aici o chestie care poate da de gandit (de pe howstuffworks.com): QUOTE Anti-lock brakes really do help you stop better. They prevent wheels from locking up and provide the shortest stopping distance on slippery surfaces. But do they really prevent accidents? This is the true measure of the effectiveness of ABS systems. The Insurance Institute for Highway Safety (IIHS) has conducted several studies trying to determine if cars equipped with ABS are involved in more or fewer fatal accidents. It turns out that in a 1996 study, vehicles equipped with ABS were overall no less likely to be involved in fatal accidents than vehicles without. The study actually stated that although cars with ABS were less likely to be involved in accidents fatal to the occupants of other cars, they are more likely to be involved in accidents fatal to the occupants of the ABS car, especially single-vehicle accidents. There is much speculation about the reason for this. Some people think that drivers of ABS-equipped cars use the ABS incorrectly, either by pumping the brakes or by releasing the brakes when they feel the system pulsing. Some people think that since ABS allows you to steer during a panic stop, more people run off the road and crash. Some more recent information may indicate that the accident rate for ABS cars is improving, but there is still no evidence to show that ABS improves overall safety ok, se pare ca m-am inselat, aici zice altceva: QUOTE(http://www.nhtsa.dot.gov/cars/problems/equipment/ABSBRAKES.html) Do cars with ABS stop more quickly than cars without? ABS is designed to help the driver maintain control of the vehicle during emergency braking situations, not make the car stop more quickly. ABS may shorten stopping distances on wet or slippery roads and many systems will shorten stopping distances on dry roads. On very soft surfaces, such as loose gravel or unpacked snow, an ABS system may actually lengthen stopping distances. In wet or slippery conditions, you should still make sure you drive carefully, always keep a safe distance behind the vehicle in front of you, and maintain a speed consistent with the road conditions. si inca o parere de pe net: QUOTE Incorrect - on a dry road, and car with good tyres, ABS DOES increase stopping distance in almost all cases. Deci pana la urma nu e foarte clar daca ajuta sau nu pe drum uscat. Si un ultim quote, de pe un forum, dar un tip cu f. mult 'common sense': My classic-shape Saab 900 Turbo does not have airbags, ABS or stability control-systems. Still, research on real life safety has shown it to be significantly safer than the average car on the road, and on a par with much newer models that are considered to be 'safe as houses' such as the '96-'02 VW Passat or late-model BMW's. How comes, you'd say? Well... Airbags are SUPPLEMENTARY to seatbelts and their contibution to overall safety is relatively minor. In some cases they are a detriment to safety, although it has to be said the overall balance is positive. The real reason airbags have been adopted across the industry is that a large proprtion of US drivers find it an infringement to their 'freedom' to have to buckle up, and declines (I think it an infringement to my wallet having to pay the hospital bills and loss of income of people that choose not to wear them, but that's another discussion). The US govenment had therefore insisted that all cars should be equipped with some passive restraint system, and airbags are a much more elegant solution than the 'passive' seatbelts found in US-spec cars of the late eighties. Four-point harnsses however would be a bigger contributor to overall vehicle safety than airbags. ABS allows you to brake and steer at the same time. It won't shorten your brake distances, but makes sure that your brake distance will be close to optimal in a wide range of conditions. Someone that chooses to drive a 300+ hp sports car should have the basic ability to brake, then release the brakes and steer around the obstruction in case of an emergency. That's what I learnt in a simple 'grip/slip' safety course aimed at the lowest sommon denominator of drivers. For the lack of ABS, you are rewerded with a better pedal feel that allows a good driver to get closer to the point where the wheels lock up, and thus brake more efficiently than ABS would allow. Also, you get more information through the pedal about brake fade etc. on particularly hard, repeated use (tack driving etc.) Research has indicated that ABS isn't such a clear-cut advantage to road safety as thought, mainly due to people dricing more closely to the car in front of them and failing to adapt their driving to different weather/road conditions. Same goes for traction and stability control problems. They allow people to use more of what longitudinal and lateral grip is available more of the time - but that means if the laws of physics are trespassed, people are likely to fly off the road at a higher speed than without these elctronic 'guard dogs'. Both of my cars lack these drivers' aids. If I enter a given bend at say 50 mph, I feel the car not following my steering input to the full 100 percent anymore, and that feeling will gradually get stronger at 51, 52, 55... mph until the adhesion limit is reached at 70 mph. Therefore I am unlikely to be trespassing that limit. Now with ESP or whatever they call it, the car will self-correct its 'natural' behaviour so 69 mph feels sompletely and utterly afe. Next day, I'll navigate the bend at 71 mph and find myself in big trouble... IMO, 'modern' safety features will buy you a false sense of security more than anything else. In some cases they might compliment good basic safety engineering, but they will never be a substitute - nevertheless that's what they are used for mostly - to try and compensated for less than desirable vehicle dynamics that are the result of current design trends (MPV's and SUV's witn a high center of gravity, the average car having gained about 300 kg of weight compared with 15 years ago, rigourously shortened lead times for new design leaving less opportunity to sort chassis dynamics out in all driving conditions - one senior member of the European Car of the Year jury told me that the Peugeot 307 would spin backwards on the standard lane chage test at 55 kn/h with ESP disabled, where it's ESP-free forebear would do the same test at 10 km/h higher with no problems). Now ESP is widely adapted on cars because consumer organizations and the German car mags demand it - even when there's no need to. Lastly, I see late-model cars with airbags, ABS, etc, sitting on cheapo tyres from Kwik Fit et al. Be advised that for instance on wet braking from 100 km/h, 'budget' tyres are found to need braking distances up to 17 metres (!) longer than with an OE-spec reference tyre - meaning the car with the A-brand tyres will have stopped where the car on 'cheap' tyres still has a speed of almost 50 km/h. Hit a solid object at that speed and the rescue marshals will have to cut you out of your car, airbags or not... Same goes for brakes, shock absorbers, etc. These are the REAL safety items on your car - be sure to use only the very best, and by all accounts you'll be safer than with airbags etc. And if you are really concerneed with the safety of you and yours on the road, please take some kind of advanced drivers training. Don't rely on microchips to keep you on the straight and narrow - take responsibility. This post has been edited by vv: 16 Mar 2005, 15:02 |
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Renault
Grand Scenic
2008
- B.00.XXX It is final proof of god's omnipotence that he needs not exist in order to save us.
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chiriac.costin |
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#136
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
Pe mine m-a ajutat sa nu lovesc masina.Fa testul si o sa vezi la ce ma refer.Vorbesc de frane bruste folosite in situatii de urgenta.
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Dacia
Logan Ambition
- CT 01 POL
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Patefon |
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#137
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![]() Membru gajait Group: Members Posts: 90 Joined: 24 May 04 From: Bucuresti ![]() |
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Seat
New Leon
2006 Sport
- B-#######-11/8 Cu stima,
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stoianco |
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#138
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Membru Group: Members Posts: 177 Joined: 5 November 04 ![]() |
punctul meu de vedere:
- in general ABS-ul ajuta la manevrarea masinii in cazul franarii violente - reducerea distantei de livrare nu aste factorul pentru care a fost conceput ABS-ul, ci posibilitatea de a avita un obstacol in regim de franare (pentru neincrezatori cu masini fara ABS: franati pana la blocarea rotilor si incercati sa virati de volan... de virat o sa virati dar masina o sa va bage in seama) - Un ABS slab poate duce la marirea distantei de franare in mod barbar. Cu cat ABS-ul este mai performant cu atat distanta de franare se reduce chiar si sub distanta de franare fara ABS activ (vorbind aici de acelasi model de masina, una cu ABS si una fara) - daca vreti sa comparati doua masini la parametrul "Distanta de franare" nu aveti decat, insa nu veti ajunge la nic o concluzie deoarece sunt prea multe diferente de constructie intre cele doua masini, incepand cu anvelope, sisteme de franare (discuri ventilate sau nu/tamburi),suspensii, aerodinamica, diferente de distributie a greutaii pe punti. Sunt pentru ABS, dar trebuie sa se constientizeze faptul ca exista situati in care ABS-ul creste cu mult distanta de franare. (o astfel de situatie este franarea cu ABS activ pe linia de tramvai) Numai bine. |
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Dacia Logan
PRESTIGE
2006
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chiriac.costin |
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#139
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
Ii spuneam sa faca un test cu aceeasi masina.Sa puna o frana brusca folosind ABS-ul iar dupa sa scoata siguranta de la ABS si sa puna aceeasi frana.De masini cu ABS care sa franeze pe distanta mai mare decat cele fara eu personal nu am auzit inca.
Dacia logan conform testului efectuat de AMS 01/2005: Logan Ambition:"(...)Distanta de oprire la rece si fara sarcina masoara 48m,o valoare acceptabila.In general o masina compacta franeaza de la 100 km/h la rece intre 42 si 45 m.In schimb,faptul ca franarea la cald in sarcina nu presupune distante mai lungi (47m) arata o buna rezistenta la utilizare excesiva(....) Conform datelor (cred oficiale) Logan cu ABS franeaza in 44,5 m iar Cel fara ABS in 49m. |
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Dacia
Logan Ambition
- CT 01 POL
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vv |
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#140
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![]() dilbert.com Group: Members Posts: 1.080 Joined: 10 June 04 From: Bucuresti ![]() |
- cu ce anvelope? Montana cumva? Aha.
- pe ce drum? - poti da un link la datele oficiale? |
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Renault
Grand Scenic
2008
- B.00.XXX It is final proof of god's omnipotence that he needs not exist in order to save us.
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chiriac.costin |
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#141
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
Cred ca sunt celebrele Montana M801.Eu am revista in fata acum nu stiu daca sunt si pe site.Este vorba de testul facut de AMS in Germania la Hockenheim.
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Dacia
Logan Ambition
- CT 01 POL
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vv |
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#142
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![]() dilbert.com Group: Members Posts: 1.080 Joined: 10 June 04 From: Bucuresti ![]() |
Inca un link: http://www.safespeed.org.uk/braking.html
se remarca urmatorul citat: QUOTE In the dry, with or without ABS, the fastest way to stop is usually to press the brake pedal as hard as you can and hold it there. Sometimes steering control is even more important than braking and locked wheels don't steer. Poza asta: braking8.gif ( Size: 14.7k ) Number of downloads: 117 sustine ce stiam eu: pe uscat, e cam tot aia. Si asta ar explica de ce unii zic ca "scurteaza distanta" altii ca nu o scurteaza ('legenda' pozei: Typical friction characteristics: (a) dry asphalt; ( ![]() se mai remarca si urmatorul citat care e un pic diferit de ce stiam eu: QUOTE Two foot panic When driving a manual car and emergency braking is considered the question arises about what you might do with the clutch pedal. Some have suggested that leaving the clutch alone is a good idea until just before you stop. They are wrong. In an emergency hit the brake and clutch both at once in a "two foot panic". This is important for two basic reasons: Once you have stopped there might well be danger all around you. There might even be a large lorry caught up in the same problem steaming towards you with its tyres on fire from braking. In circumstances such as these you do not want to be restarting the engine. The idea is to have maximum control and maximum options. If you hadn't declutched then you might have stalled the engine even at 60 mph by locking the wheels. A stalled engine might also affect power steering and servo assisted brakes. (Most servo assisted brakes have a vacuum reservoir which will provide assistance for several brake applications after the engine has stopped.) Declutching prevents the engine from fighting the brakes just when you need maximum braking effort. "Two foot panic" is taught on skid pans. as zice totusi ca nu e bine sa apesi ambreiajul imediat - chiar si din descrierea lor, rezulta ca vrei sa-l apesi doar cand turatia motorului a scazut destul de mult. This post has been edited by vv: 16 Mar 2005, 18:45 |
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Renault
Grand Scenic
2008
- B.00.XXX It is final proof of god's omnipotence that he needs not exist in order to save us.
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chiriac.costin |
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#143
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![]() Membru incepator Group: Members Posts: 81 Joined: 26 January 05 From: Constanta ![]() |
E misto chestia.Oricum, ideea e ca ABS-ul este un lucru extrem de util si face toti banii.
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Dacia
Logan Ambition
- CT 01 POL
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GolfIII |
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#144
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QUOTE(vv @ 16 Mar 2005, 18:42) as zice totusi ca nu e bine sa apesi ambreiajul imediat - chiar si din descrierea lor, rezulta ca vrei sa-l apesi doar cand turatia motorului a scazut destul de mult. Hmm. Eu consider ca este bine sa debraiezi chiar de la inceput. De ce? Gandeste-te ca motorul are o inertie (este in misare), daca nu debraiezi toata aceasta forta este transferata sistemului de franare care si asa este foarte tensionat in acel moment. Si sa-ti raspund si la o alta ideea de-a ta: Rotile se pot bloca indiferent de aderenta drumului, chiar daca drumul este uscat. Daca tie nu ti-a reusit pana acum insemna ca nu te-ai straduit suficient. ![]() Discutia oricum a mai fost discutata si rasdiscutata. Se cunosc situatiile cand distanta de franare se mareste si cand se micsoreaza... |
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Volkswagen
Golf III
1995
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GolfIII |
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#145
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![]() Membru autentic Group: Members Posts: 506 Joined: 5 April 04 ![]() |
QUOTE(andreic @ 16 Mar 2005, 13:47) Itrebare: Golf v nu are cumva pe spate discuri ventilate? Si atunci lucrul acesta nu influenteaza calitatea franarii? Golf-ul nu are discuri ventilate pe spate. De fapt, in afara masinilor super sportive, eu nu am auzit de discuri ventilate pe spate, dar nu bag mana in foc pentru asta. Oricum, discurile pe spate nu franeaza mai bine decat tamburii decat in situatia in care acestia din urma ajung la fading. In afara curselor este destul de greu sa ajungi la fading cu sabotii la o masina de greutatea/performantele LGN. |
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Volkswagen
Golf III
1995
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andreic |
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#146
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![]() Membru autentic Group: Members Posts: 415 Joined: 18 January 05 From: Bucuresti ![]() |
merci GolfIII dar totusi cred ca discurile pe spate asigura o franare ceva mai buna decat tamburii. Si sunt convins ca in testul respectiv a fost vorba si de anvelope diferite. Si ca sa o tin tot pe a mea Wv Golf v nu are macar pe fata discuri ventilate??
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Dacia
Logan
Ambition 1.6 mpi
- B-xx-yyy
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osirus |
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#147
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![]() Milionar de week-end Group: Banned Posts: 501 Joined: 17 November 04 From: Salajan ![]() |
Daca era vorba de noul golf,pe spate are discuri neventilate!Dar va certati degeaba ca ABS-ul i-si face treaba cu brio,chiar si cu cauciucurile astea hulite! Daca tamburii sunt mai eficienti in frinare,de ce s-au montat dicuri la masinile mai sportive? |
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Dacia/Skoda
Logan ambition
- Octavia L&K vreau o rabla de masina ca sa-i rup kilometraju s-o petarda buna rau sa-i dau jos ambalaju
................"Fac sport extrem cu dacia/Cu ochii inchisi o calc/I-mi place senzatia!"............... |
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GolfIII |
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#148
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![]() Membru autentic Group: Members Posts: 506 Joined: 5 April 04 ![]() |
Deraiam de la subiect...
@andreic: Golful V are pe fata discuri ventilate iar pe spate discuri normale. SINGURUL avantaj al discurilor in comparatie cu tamburii este acela ca disipa caldura mult mai usor. Din acest motiv pentru o masina grea/puternica sunt necesare discurile pe spate. @osirus. Eu nu am spus ca tamburii sunt mai eficienti decat discurile. Sustin numai ca in 95% din situatii, la o masina din categoria LGN, acesta diferenta dintre tamburi/discuri este practic inexistenta. La o masina cu pretentii sportive (ex. GTI ![]() P.S. Tamburii au mareleje avantaj al pretului fata de discuri. De ce sa platesti mai mult pe discuri daca iti sunt practic inutile |
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Volkswagen
Golf III
1995
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vv |
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#149
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![]() dilbert.com Group: Members Posts: 1.080 Joined: 10 June 04 From: Bucuresti ![]() |
@Golf - eu as zice ca pana la o anumita turatie, motorul TE AJUTA sa franezi. Practic tu nu-i mai bagi benzina, si atunci contribuie si el la 'franarea' rotilor. A, da, daca scade turatia mult si ti se redeschid injectoarele, atunci te incurca.
@andreic - as mai adauga doar ceva la ce a zis GolfIII - daca vrei sa faci raliuri cu LGN, trebuie sa schimbi si placutele fiindca vrei unele care opereaza bine la temperaturi mari. Dar LGN a fost gandit ca masina de oras, si are franele concepute sa franeze mai bine cand sunt reci (nu vrei sa 'dai doua ture' in jurul blocului ca sa incalzesti franele inainte de a pleca, nu?) P.S. Am facut testul aseara, pe splai: am franat brusc la ~ 70 km/h. Am franat destul de scurt, nu pana a oprit masina, dar destul de violent. ABS-ul nu a intrat deloc, si evident nici nu a patinat masina. (cred ca am franat cam de pe la 70 km/h pana sub 30). Ma rog, nu stiu cat e de relevant - sunt de acord ca poate intra si 'pe uscat' dar deocamdata imi mentin parerea ca asta se intampla mai ales daca ai viteza foarte mare sau cauciucuri foarte proaste (sau daca prinzi ceva praf pe jos = zona cu aderenta slaba). This post has been edited by vv: 17 Mar 2005, 09:54 |
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Renault
Grand Scenic
2008
- B.00.XXX It is final proof of god's omnipotence that he needs not exist in order to save us.
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Patefon |
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#150
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![]() Membru gajait Group: Members Posts: 90 Joined: 24 May 04 From: Bucuresti ![]() |
QUOTE(GolfIII @ 16 Mar 2005, 21:44) Discutia oricum a mai fost discutata si rasdiscutata. Se cunosc situatiile cand distanta de franare se mareste si cand se micsoreaza... Hai sa vedem cum franeaza o masina cu ABS si fara si atunci o sa vedem cand se mareste si cand se micsoreaza. O masina FARA ABS poate frana in doua moduri: 1. Franare in limita aderentei (rotile se mai invart inca in timpul franarii) si e cea mai eficienta; 2. Franare cu depasire limitei de aderenta si atunci masina se duce sanie. In cazul 1 distanta de franare este minima cu conditia sa fii un mic Fitipaldi si sa stii cand sa te opresti din apasarea pedalei de frana, sa micsoreji apasarea pe masura ce obstacolul se apropie de tine si scade viteza, sa jonglezi cu pedala de frana daca se schimba conditiile de aderenta. Cam greu nu-i asa! ![]() O masina CU ABS poate frana deasemenea in ambele moduri. Diferenta apare cand se depaseste limita de aderenta si atuci ABS-ul blocheaza si deblocheaza rotile (cam de 10 ori pe secunda in conditii de aderenta buna si poate ajunge la mai putin de o blocare pe secunda in conditii de polei) astfel incat mai ai o sansa prin controlul directiei chiar daca distanta de franare creste (frana fiind actionata cam 75% din timpul total). Intrebarea este ABS-ul de pe Logan iese din ciclul de franari succesive cand conditiile de aderenta se schimba? Ex: Am franat pe o gura de canal si a intrat ABS-ul, pe asfaltul ce urmeaza gurei de canal se decupleaza singur sau trebuie sa iau piciorul de pe frana? |
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Seat
New Leon
2006 Sport
- B-#######-11/8 Cu stima,
Patefon |
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