Din pacate cred ca ai cam exagerat putin la capitolul asta
E totusi o masina de strada, cred ca numai suspensia ar fi fost suficienta
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| Alfa Romeo 147 1.6 TS "Tartaruga" https://www.alfaclub.ro/forum/viewtopic.php?t=2537 |
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| Author: | ALXege [ 02 Oct 2007, 16:54 ] |
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Din pacate cred ca ai cam exagerat putin la capitolul asta E totusi o masina de strada, cred ca numai suspensia ar fi fost suficienta
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| Author: | centoquarantasette [ 02 Oct 2007, 17:01 ] |
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ce naiba ma... toate masinile sport au bare antiruliu groase... nu numai eu... Clio Rs Golf Focus Gta TT Z4..... etc + ca nu regret absolut deloc comportamentul ei. Incerc doar sa explic ce inseamna o alta suspensie.. mai mult decat prin expresia... "arata altfel"  Btw: la orice modificare a masinii de fabrica ai niste + si niste - ... ideea e sa fii deacord cu ele... dar orice pui/inlocuiesti/scoti... iti ia sau iti da ceva... Cred ca pana la urma asta inseamna "tuning" sau "modificari" sa adaptezi comportamentul masini pt o singura persoana... |
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| Author: | centoquarantasette [ 02 Oct 2007, 17:21 ] |
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nu ma supar... acesta e un forum... nu un loc de cearta.. pur si simplu dezbatem niste pareri.... probabil ca explicatiile mele referitoare la comportamentul masini au fost cam "seci"... si voi ati tras automat niste concluzii negative... Eu spun doar .. ca e altfel... Primele 2-3 sapt.. eram nemultumit.. masina topaia la denivelari avand spatele usor... sarea intr una... tremura si pe asfaltul de la Formula Challange... etc... DAR .. acum... dupa o perioada de acomodare.. (sa ii spunem rodaj)... este altceva... este perfecta... este.. sportiva... iar eu m am obisnuit cu comportamentul ei supravirator... (comportament care apare numai cand mergi tare.. f tare.. si atunci te astepti sa faca asta... este un comportament care te ajuta sa iesi mai tare dintr un viraj) in rest...daca se respecta limitele de viteza in localitati si in afara lor masina nu iti face nici o problema. Btw la 2 zile dupa ce le am montat, am facut un test suspensie la service a rezultat ca 3 roti aveau eficienta 30-50% (adik amortizoare de inlocuit) iar 1 roata cu care luasem niste gropi avea eficienta 90%.... Cam asa sta pe viraje acum  http://www.youtube.com/watch?v=CN4jHH9rXeU http://www.youtube.com/watch?v=kKxCT1UK_sE |
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| Author: | Alexandrus [ 02 Oct 2007, 18:17 ] |
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LOL, deci e bine ca pierzi aderenta, tare. Te-ai gindit sa incerci un curs de pilotaj, fie el doar teoretic, sa vezi ca ai sa fii contrazis ? Plus ca overstter<>bine, ca si understeer<>bine, dar oversteer la FWD inseamna ca ai ceva gresit rau de tot acolo. Tu compari masinile alea gindite sa fie mai sportive cu o masina de 120CP, care a fost gindita sa fie cit mai pentru strada. Nu e o comparatie buna, chiar daca numai din punctul de vedere al grosimii barilor antiroliu. Care bari au grosime si tarie gindite pentru fiecare masina in parte(greutate, distributia greutatii, centrul de greutate, taria arcurilor, etc etc), prea gros=prea rigida masina pe o anumita punte. Vezi pe AO ca sunt citiva care stiu ce vorbesc si nici pe GTA-uri de 400+ CP nu pun bari foarte groase ca....ajungi sa vezi stele verzi. Dany, transferul de masa se realizeaza oricum, doar ca nu mai raspunde masina la fel cind se produce, adica nu mai exista inclinatia respectiva. Daca nu s-ar mai realiza transferul ala ce bine ar fi.... Oricum eu nu inteleg cum pierzind aderenta pe spate poti avea viteza mai mare la iesirea din viraj, dat fiind ca exista acceleratii laterale puternice in cazul ala. PS. Tu sper ca te referi la barile cu bucse ce vin intre suspensii, pe sub masina, nu la dombar, ala de vine deasupra motorului, intre pilonii de la amortizoare. |
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| Author: | Alexandrus [ 02 Oct 2007, 18:29 ] |
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My bad 
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| Author: | centoquarantasette [ 02 Oct 2007, 18:58 ] |
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Side look: 
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| Author: | centoquarantasette [ 02 Oct 2007, 19:26 ] |
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Alexandrus Quote: LOL, deci e bine ca pierzi aderenta, tare. Te-ai gindit sa incerci un curs de pilotaj, fie el doar teoretic, sa vezi ca ai sa fii contrazis ? Plus ca overstter<>bine, ca si understeer<>bine, dar oversteer la FWD inseamna ca ai ceva gresit rau de tot acolo.
Tu compari masinile alea gindite sa fie mai sportive cu o masina de 120CP, care a fost gindita sa fie cit mai pentru strada. Nu e o comparatie buna, chiar daca numai din punctul de vedere al grosimii barilor antiroliu. Care bari au grosime si tarie gindite pentru fiecare masina in parte(greutate, distributia greutatii, centrul de greutate, taria arcurilor, etc etc), prea gros=prea rigida masina pe o anumita punte. Vezi pe AO ca sunt citiva care stiu ce vorbesc si nici pe GTA-uri de 400+ CP nu pun bari foarte groase ca....ajungi sa vezi stele verzi. Dany, transferul de masa se realizeaza oricum, doar ca nu mai raspunde masina la fel cind se produce, adica nu mai exista inclinatia respectiva. Daca nu s-ar mai realiza transferul ala ce bine ar fi.... Oricum eu nu inteleg cum pierzind aderenta pe spate poti avea viteza mai mare la iesirea din viraj, dat fiind ca exista acceleratii laterale puternice in cazul ala. PS. Tu sper ca te referi la barile cu bucse ce vin intre suspensii, pe sub masina, nu la dombar, ala de vine deasupra motorului, intre pilonii de la amortizoare. Off... 1. tu crezi ca barele antiruliu pe care le am montat sunt luate de pe s8 sau tuareg.... sunt de alfa 147! astea inseamna ca sunt potrivite masinii asteia.... - deci gandite de niste ingineri pentru respectiva masina - apoi.... masinile din cele 2 clipuri sunt autoturisme normale (tot de strada - sau acum laudam comportamentul de f1 pe care il vw?) carora le au fost aduse niste modificari... nu sunt supersport.. (porsche-ferrari-lamborghini) acestea din urma sunt "gandite sa fie mai sportive" ca sa te citez. 2. ai idee de diferentele de grosime intre cele 2 bare cu care vine masina dotata si cele de la eibach? 3. daca pierzi spatele... si ai tractiune fata.... explica mi te rog de ce viteza e mica.... ai aceeasi aderenta la rotile motoare... dar o frecare mai mica ( 2 roti aluneca) 4. vreau sa stiu daca tu ai mers vreodata cu o astfel de masina.... macar din dreapta... ca sa iti poti crea o opinie corecta 5. legat de cursul de pilotaj. M am gandit! Ca sa nu te scufunzi in cautari iti dau eu dimensiunile: Serie..............Ant-24mm................Post-14mm GTA................Ant-24mm................Post-16mm Eibach............Ant-26mm................Post-18mm |
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| Author: | centoquarantasette [ 02 Oct 2007, 19:47 ] |
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fii sigur ca se tine mai bine... daca ar fi vre unul p aici.. am vedea
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| Author: | Alexandrus [ 02 Oct 2007, 19:48 ] |
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Stiu dimensiunile(vezi ca alea stock au 22 pe fata, nu 24), mai exista si altele in afara de Eibach, unele cu 2mm mai groase. Da, am idee de diferentele de grosime, dar tu se pare ca nu iei in considerare ce diferenta face acea grosime, 2mm pot insemna o crestere a duritatii de 1xx%, nu de 20% cum te-ai astepta. Oricum, eu nu zic ca sunt barele alea prea dure pentru 147, ci spun ca masina e undeva setata aiurea. Citeste mai jos daca nu ma crezi, sau intreaba pe cineva. Cu masinile te cam inseli, una e supercar, alta e masina sportiva, de exemplu EVO e sportiva, nu e supercar, pe cind Lambo e supercar. Anyway, ne pierdem in detalii aiurea. Ce legatura are deraparea spatelui cu viteza la FWD iti dai seama si singur, ca e simplu, iar daca nu iti dai seama iti explic, sau iti explica la cursul de pilotaj. Si da, am mers cu ceva masini la viata mea, cel putin una din ele fiind ceva mai "potenta' de 120CP si suspensii setate aiurea. Dar nu vad relevanta acestui fapt. Anyway, ca sa fie mai simplu iti atasez un mic ghid cu cauze si efecte si rezolvari : RIDE AND ROLL RESISTANCE-SPRING Too much spring: overall • Harsh and choppy ride • Much unprovoked sliding • Car will not put power down on corner exit – excessive wheel-spin Relatively too much spring: front • Understeer – although the car may initially point in well • Front breaks loose over bumps in corners • Front tyres lock while braking over bumps Relatively too much spring: rear • Oversteer immediately on application of power • Excessive wheel-spin Too little spring: overall • Car contacts the track a lot • Floating ride with excess vertical chassis movement, pitch and roll • Sloppy and inconsistent response • Car slow to take a set – may take more than one Relatively too little spring: rear • Excessive squat on acceleration accompanied by excessive rear negative camber, leading to oversteer and poor power down characteristics • Tendency to fall over on outside rear tyre and ‘flop’ into oversteer and wheel-spin ANTI-ROLL BARS Too much anti-roll bar: overall • Car will be very sudden in response and will have little feel • Car will tend to slide or skate rather than taking a set – especially in slow and medium speed corners • Car may dart over one wheel or diagonal bumps Relatively too much anti-roll bar: front • Corner entry understeer which usually becomes progressively worse as the driver tries to tighten the corner radius. Relatively too much anti-roll bar: rear • If the imbalance is extreme can cause corner entry oversteer • Corner exit oversteer. Car won’t put down power but goes directly to oversteer due to inside wheel-spin • Excessive sliding on corner exit • Car has a violent reaction to major bumps and may be upset by ‘FIA’ kerbs Too little anti-roll bar: overall • Car is lazy in response, generally sloppy • Car is reluctant to change direction in chicane and esses Relatively too little anti-roll bar: front • Car ‘falls over’ onto outside tyre on corner entry and then washes out into understeer • Car is lazy in direction changes Relatively too little anti-roll: rear • My own opinion is that on most road courses a rear anti-roll bar is a bad thing. Anti-roll bars transfer lateral load from the unladen tyre to the laden tyre – exactly what we don’t want at the rear. I would much rather use enough spring to support the rear of the car. The exception comes when there are ‘washboard ripples’ at corner exits, as on street circuits and poorly paved road circuits. SHOCK ABSORBER FORCES Too much shock: overall • A very sudden car with harsh ride qualities, much sliding and wheel patter • Car will not absorb road surface irregularities but crashes over them Too much rebound force • Wheels do not return quickly to road surface after displacement. Inside wheel in a corner may be pulled off the road by the damper while still loaded • Car may ‘jack down’ over bumps or in long corners causing a loss of tyre compliance. Car does not power down well at exit of corners when road surface is not extremely smooth Too much bump force: general • Harsh reaction to road surface irregularities. • Car slides rather than sticking • Car doesn’t put power down well - driving wheels hop. Too much low piston speed bump force • Car’s reaction to steering input too sudden • Car’s reaction to lateral and longitudinal load transfer too harsh Too much high piston speed bump force • Car’s reaction to minor road surface irregularities too harsh – tyres hop over ‘chatter bumps’ and ripples in braking areas and corner exits. Too little shock: overall • Car floats a lot (the Cadillac ride syndrome) and oscillates after bumps • Car dives and squats a lot • Car rolls quickly in response to lateral acceleration and may tend to ‘fall over’ onto the outside front tyre during corner entry and outside rear tyre on corner exit. • Car is generally sloppy and unresponsive Too little rebound force: overall • Car floats – oscillates after bumps (the Cadillac ride syndrome) Too little bump force: overall • Initial turn in reaction soft and sloppy • Excessive and quick roll, dive and squat Too little low piston speed bump force • Car is generally imprecise and sloppy in response to lateral (and, to a lesser extent longitudinal) accelerations and to driver steering inputs Too little high piston speed bump force • Suspension may bottom over the largest bumps on the track resulting in momentary loss of tyre contact and excessive instantaneous loads on suspension and chassis Dead shock on one corner • A dead shock is surprisingly difficult for a driver to identify and/or isolate • At the rear, that car will ‘fall over’ onto the outside tyre and oversteer in one direction only • At the front, the car will ‘fall over’ onto the outside tyre on corner entry and then understeer. WHEEL ALIGNMENT Front toe-in: too much • Car darts over bumps, under heavy braking and during corner entry – is generally unstable • Car won’t point into corners, or if extreme. May point in very quickly and then dart and wash out Front toe-out: too much • Car wanders under heavy braking and may be somewhat unstable in a straight line, especially in response to single wheel or diagonal bumps and/or wind gusts • Car may point into corners and then refuse to take a set • If extreme will cause understeer tyre drag in long corners Rear toe-in: too little • Power on oversteer during corner exit Rear toe-in: too much • Rear feels light and unstable during corner entry. Car slides through corners rather than rolling freely Rear toe-our: any • Power oversteer during corner exit and (maybe) in a straight line • Straight line instability Front wheel caster or trail: too little • Car too sensitive (twitchy?) • Too little steering feel and feedback Front wheel caster or trail: too much • Excessive physical steering effort accompanied by too much self return action and transmittal of road shocks to the drivers hands • General lack of sensitivity to steering input due to excessive force required Front wheel caster or trail: uneven • Steering effort is harder in one direction than in the other • Car will ‘pull’ towards the side with less caster – good on ovals, bad on road courses Camber: too much negative • Inside of tyre excessively hot and/or wearing too rapidly. At the front this will show up as reduced braking capability and at the rear as reduced acceleration capability. Depending on the racetrack and the characteristics of the individual tyre, inside temperature should be 10°-25° hotter than the outside. Use a real pyrometer with a needle rather than an infra red surface temperature device. Camber: not enough negative • Outside of tyre will be hot and wearing. This should never be and is almost always caused by running static positive camber at the rear in an effort to avoid the generation of excessive negative camber under the influence of aero download at high speed. • A better solution is improved geometry and increased spring rate. Dynamic positive camber will always degrade rear tyre performance and if extreme, can cause braking instability and/or corner exit oversteer. Bump steer, front: too much toe-in in bump • Car darts over bumps and understeers on corner entry Bump steer, front: too much toe-out in bump • Car wanders under brakes and may dart over one wheel or diagonal bumps • Car may understeer after initial turn in Bump steer, rear: too much toe-in in bump (same as solid axle steer on outside wheel) • Roll understeer on corner entry • Mid phase corner understeer • ‘Tiptoe’ instability when trail braking • Darting on power application on corner exit Bump steer, rear: too much toe-out in bump (same as solid axle steer on outside wheel) • Instability on acceleration • Good turn in followed by a tendency to oversteer at mid-phase and exit TYRES Too much tyre pressure • Harsh ride, excessive wheel patter, sliding and wheel-spin • High temperature reading and wear at the centre of the tyre Too little tyre pressure • Soft and mushy response • Reduced footprint area and reduced traction • High temperatures with a dip in the centre of the tread Front tyres ‘going off’ • Gradually increasing understeer – Enter corners slower, get on power earlier with less steering lock Rear tyres ‘going off’ • Gradually increasing power on oversteer – Try to carry more speed through corner and be later and more gradual with power application LIMITED SLIP MALADIES Limited slip differential wearing out • Initial symptoms are decreased power on understeer or increased power on oversteer and inside wheel spin. The car might be easier to drive, but it will be slow • When wear becomes extreme, stability under hard acceleration from low speed will diminish and things will not be pleasant at all Excessive cam or ramp angle on coast side plate (clutch pack) limited slip differential • Corner entry, mid-phase and corner exit understeer. Incurable with geometry changes or rates – must change differential ramps. In 1998, virtually everyone is running 0/0 or 80/80 ramps. SUSPENSION GEOMETRY Excessive front scrub radius (steering offset) • Excessive steering effort accompanied by imprecise and inconsistent ‘feel’ and feedback Excessive roll centre lateral envelope: front or rear • Non-linear response and feel to steering input and lateral ‘G’ (side force) generation Rear roll centre too low (or front r/c relatively too high) • Roll axis too far out of parallel with mass centroid axis, leading to non-linear generation of lateral load transfer and chassis roll as well as the generation of excessive front jacking force. • Tendency will be towards understeer Rear roll centre too high (or front r/c relatively too low) • Opposite of above, tending towards excessive jacking at the rear and oversteer Front track width too narrow relative to rear • Car tends to ‘trip over its front feet’ during slow and medium speed corner entry, evidenced by lots of understeer (remember trying to turn your tricycle?) • Crutch is to increase front ride rate and roll resistance and increase the camber curves in the direction of more negative camber in bump (usually by raising the front roll centre) INSTABILITY Straight line instability: general • Rear wheel toe-out, either static due to incorrect (or backwards) setting, or dynamic due to bump steer or deflection steer • Vast lack of rear download or overwhelming preponderance of front download • Wild amount of front toe-in or toe-out • Loose or broken chassis, suspension member or suspension link mounting point • Dead shock absorber Straight line instability: under hard acceleration • Malfunctioning limited slip differential • Insufficient rear toe-in • Deflection steer from rear chassis/suspension member or mounting point • Rear tyre stagger (car pulls to one side) • Dead rear shock absorber • Wildly uneven corner weights Straight line instability: car darts over bumps (especially one wheel bumps) • Excessive Ackermann steering geometry • Excessive front toe-in or toe-out • Uneven front caster or trail settings • Insufficient rear wheel droop travel • Dead shock or uneven shock forces or incorrectly adjusted packers/bump rubbers • Wildly uneven corner weights • Front anti-roll bar miles too stiff Instability under hard braking: front end wanders • Excessive front brake bias or uneven corner weights or excessive front damper rebound force Instability under hard braking: car wants to spin • Excessive rear brake bias • Insufficient rear droop travel • Wildly uneven corner weights • Excessive rear damper rebound force • Unbalanced ride/roll resistance – too much at rear • Insufficient rear camber (usually in combination with one or more of the above) RESPONSE Car feels generally too heavy and unresponsive • Tyre pressures too low • Insufficient ride and/or roll resistance (springs and bars) • Excessive aerodynamic download, or insufficient spring for the amount of download • If high speed acceleration is sluggish, the culprit is often too large a rear wing Gurney lip Car feels sloppy, is slow to take a set in corners, rolls a lot, doesn’t want to change direction • Insufficient tyre pressure • Insufficient damper forces • Car too soft in ride and/or roll Car responds too quickly – has little feel – slides at the slightest provocation • Excessive tyre pressure • Excessive bump force in shock absorbers • Car too stiff for inexperienced driver • Excessive ride or roll resistance • Excessive front or rear toe-in • Insufficient aerodynamic download Understeer Corner entry understeer: car initially points in and then washes out • Excessive toe-in or toe-out (car is usually ‘darty’) • Insufficient front droop travel (non droop limited cars only) • Incorrectly adjusted packers (car rolls on to packers) • Insufficient front damper bump resistance (similar to roll stiffness example) • Insufficient front roll stiffness – car may feel like it is pointing in but may actually be falling over onto the outside front tyre due to insufficient front roll stiffness or diagonal load transfer under heavy trail braking. Initial understeer can often be cured by increasing front roll resistance, even though doing so may increase the amount of lateral load transfer. • Non linear lateral load transfer due to spring and/or bar geometry. Or to non-optimal roll axis inclination Corner entry understeer: car won’t point in and gets progressively worse • Driver braking too hard, too late • Relatively narrow front track width • Excessive front tyre pressure • Excessive front roll stiffness (spring or bar) • Relative lack of front download (excessive rear download) • Incorrectly adjusted packers or bump rubbers (car rolls onto packers) • Insufficient front toe-in • Insufficient Ackermann effect in steering geometry • Front roll centre too high or too low • Insufficient front damper bump force • Insufficient front toe-out • Insufficient front wheel droop travel (on non droop limited cars only) • Nose being ‘sucked down’ due to ground effect • Excessive Ackermann steering geometry • Can also be caused by unloading the front tyres due to rearward load transfer under acceleration – cures include: • Increasing front damper rebound force • Increasing rear damper low speed damper rebound force • Increasing rear anti-squat • Droop limiting front suspension (will also make turn in more positive and will reduce overall understeer) Mid-corner (mid-phase) understeer • Excessive front tyre pressure • Excessive relative front roll stiffness • Excessive front toe (in or out) • Excessive Ackermann steering geometry • Insufficient front dynamic camber • Relatively narrow front track width • Insufficient front wheel travel (car rolls onto packers or bottomed shock) • Insufficient droop travel (on non droop limited cars) Corner exit understeer: slow corners • Often a function of excessive corner entry and mid-phase understeer (whether driver induced or car induced) followed by throttle application whilst maintaining the understeer steering lock. The first step must be to cure the corner entry and mid-phase understeer. If this is impractical, then corner entry speed should be reduced slightly in order to allow earlier throttle application. Sometimes we have to be patient. Corner exit understeer: fast corners • Relative lack of front download – often caused by negative pitch angle (squat) due to rearward load transfer on acceleration. Can be helped by increasing rear anti-squat and/or by increasing rear low speed bump force, increasing front droop force and by limiting the front suspension droop travel. • Relatively narrow front track width • Excessive ramp angle or pre-load on clutch pack or plate type limited slip differentials. Understeer stronger in one direction than in the other • Uneven corner weights • Uneven caster • Uneven camber (especially front) OVERSTEER Corner Entry Oversteer • Excessively heavy trail braking • Excessive rearward brake bias • Severe rearward ride rate/roll resistance imbalance • Rear roll centre too high • Diabolical lack of rear download • Severely limited rear droop travel • Broken or non-functioning outside rear damper • Broken or non-functioning front anti-roll bar Note: A slight feeling of rear ‘tiptoe’ type hunting on corner entry can be due to excessive rear toe-in or excessive rear damper rebound force. Mid-corner (mid-phase) oversteer • Driver threw the car at the corner to get through initial understeer – only cure is to educate the driver and/or decrease understeer • Excessive rear tyre pressure • Excessive relative rear ride and/or roll stiffness • Rear suspension bottoming in roll • Insufficient rear droop travel (non droop limited cars only) • Very loose rear anti-roll bar linkage Corner exit oversteer: gets progressively worse from the time the power is applied • Worn out limited slip differential • Excessive anti-squat geometry • Excessive rear ride and/or roll stiffness • Insufficient rear spring, bar or shock (low piston speed bump force) allowing the car to ‘fall over’ onto outside rear tyre • Excessive rear negative camber • Too little dynamic rear toe-in • Relatively insufficient rear download Note: If car feels as though it is sliding through the corner rather than rolling freely, reduce the rear toe-in and see what happens. Corner exit oversteer –sudden – car seems to take a normal exit set and then breaks loose • Insufficient rear suspension travel (lifting the inside wheel on non droop limited cars or bottoming the outside suspension due to lack of bump travel) • Incorrectly adjusted packers • Dead rear damper • Sudden change in outside rear tyre camber • Too much throttle applied too soon –often after the drivers confidence has been boosted by the car taking a set. Car does not put the power down smoothly on the exit of smooth corners • Worn out limited slip differential • Excessive rear ride/roll resistance • Excessive anti-squat geometry • Excessive rear tyre pressure • Tyres gone • Excessive rear damper low piston speed bump force • Excessive rear dynamic camber – either from download or from camber change on squat • Relative lack of rear download Car does not put the power down on the exit of bumpy corners • Any or all of the above for smooth corners • Excessive rear damper high piston speed force • Excessive rear damper rebound force (jacking down) • Insufficient rear droop travel TRANSITIONS Understeer in, snap to oversteer on power application • The most common complaint of all ! Usually caused by too little roll resistance – car falls over on entry and then snaps. • Increase front bar and/or spring and/or front damper low piston speed bump force. Stiffening the bar will also transfer some load on to the inside rear tyre on acceleration. • If the suggestion above cures the understeer but the car still snaps, the culprit is almost always the car falling over on the outside rear tyre on longitudinal plus lateral load transfer. Add rear bar or spring. Bar will transfer load away from the inside rear tyre. Spring will not. Spring will, however, decrease traction over exit bumps while bar will not. • Loose anti-roll bar linkage/blade sockets can have the exactly same effect Car is slow to change directions in chicanes or esses • Insufficient ride/roll stiffness, especially at front. • Relatively narrow front track width. • Insufficient front damper low piston speed bump force. BRAKES Brake pedal gets soft, spongy and/or long during session or race • Fluid boiling in calipers. Not pad fade ! Upgrade fluid and/or cool calipers. Brake pedal is soft, spongy and/or long before the car is run • Air in the system – bleed brakes. • Brake pads badly taper worn – replace Reduced stopping power with normal brake pedal • Pad fade – due either to unbedded new pads or to temperature beyond pad capacity. Upgrade pads. Long pedal with little effort required • Master cylinder(s) too small or pedal mechanical advantage too great. Rough braking – pedal vibrates under pressure • Organic pickup on discs – clean discs with garnet paper (not aluminium oxide sandpaper) and upgrade pads • Warped (not grooved) rotors. Grind (or, if you must, turn) rotor surfaces • Insufficient axial float on floating discs Uneven braking – car pulls to one side • Stuck piston(s) – rebuild calipers Brake bias changes during application • Excessive clearance between master cylinder push rod clevises and bias bar bearing housing. • Rod end bearings used instead of clevises on master cylinder push rods. • Bias bar incorrectly adjusted. Bar must be perpendicular to vehicle longitudinal axis with full foot pressure applied. Contrary to popular opinion, relative length of master cylinder pushrods is immaterial. PS. Dimensiunile sunt asa : Stock F-22mm / R-14mm GTA F-24mm / R-16mm Eibach F-26mm / R-18mm Whiteline F-28mm / R-20mm |
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| Author: | centoquarantasette [ 02 Oct 2007, 19:55 ] |
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Bine. atunci spune mi tu... din ce le setez? Daca ai nevoie aduc bara fata duminica sa masuram impreuna... Apreciez ca mi ai dat "paste" la astea, in schimb as fi vrut sa te vad pe lista de la circuitul din arad. |
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| Author: | Alexandrus [ 02 Oct 2007, 20:11 ] |
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Pai citeste ghidul ala. Geometrie first of all. Apoi, corner weight-ing, nu stiu cum draci ii zice in limba materna. Daca amortizoarele sunt reglabile ca duretiate si rebound, si de acolo trebuie facut unele modificari, probabil. Sincer, nu ma pricep indeajuns de bine incit sa iti zic exact ce sa faci fara sa stiu unde este de fapt buba, insa e posibil sa fie o combinatie nefericita intre ARB prea dur, arcuri prea tari, etc. Toate au o logica, iti dai seama, si inca nu am auzit pe nimeni care sa mai aiba pe 147 normal ARB Eibach, sau daca or exista, nu au probleme => nu posteaza. Eu insa sper sa nu fie cazul de combinatie nefericita. Insa cert este ca, daca la tine se intimpla ce ai descris tu, nu e bine, si trebuie gasita o rezolvare. Stiu ca a gasi un service bun, care sa fie si dotat, sa aiba si mecanic priceput, e super complex la noi, trebuie totusi sa existe undeva, iar daca il gasesti, te rog, spune-ne si noua Practic tie iti trebuie setata suspensia, cu tot cu cintar pe colturi si asa mai departe, nici macar nu e nevoie de un service intreg, ci doar o geometrie mai complexa. |
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| Author: | Tupac [ 02 Oct 2007, 20:13 ] |
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Super tare side look-ul Horia Foarte bun si folositor si postul cu cauzele/efectele, al lui Alaxandrus 
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| Author: | centoquarantasette [ 02 Oct 2007, 20:15 ] |
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Service bun am gasit deja. Multumesc mult pentru sfaturi. O seara buna. |
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| Author: | Alexandrus [ 02 Oct 2007, 20:22 ] |
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Pai zi-ne si noua service-ul bun, ca poate au si altii nevoie 
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| Author: | IRBabuin [ 02 Oct 2007, 21:04 ] |
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Bara aia spate e cam de 2x mai rigida decit stock, in combinatie cu suspensia dura si cu 2.8 presiune pe spate, e si normal ca iti rupe imediat aderenta. Asa pe scurt, ai pus 2,3 pansamente la acceasi rana si acu nu mai poti sa o cureti. Ar fi interesant cum e comportamentul masinii cu bare stock si compresie semnificativ mai mica decit rebound. Asa ajuti barele stock, diminuezi efectul de subvirare dar nu ajungi in situatia in care masina o data plecata, sa nu o mai poti recupera. Bara stabi este un rau necesar care iti permite sa nu alegi intre confort (arcuri moi) si stabilitate (arcuri dure), principiul "mai groasa, mai bine" merge pina cind suspensiile nu prea mai lucreaza independent si ce face una afecteaza ce face cealalta. Alta solutie s-a remarcat mai sus, cauciucuri mai late. |
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| Author: | centoquarantasette [ 02 Oct 2007, 21:57 ] |
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cine a scris, si unde ca nu se poate controla masina???????????? Cine a zis undeva.... ca suspensia are reglare de bound rebound????????? Si eu nu am cerut sfaturi (asta nu inseamna ca nu le primesc sau ca ele nu sunt bune) Doar mi am exprimat "o senzatie" fata de controlul masinii... dat ca sunt singurul de aici care are configuratia asta (ceea ce nu inseamna ca este o configuratie buna) nu inteleg de ce incercati sa rezolvati o problema ce defapt nu exista????? Asta inseamna sa pansezi o rana inexistenta |
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| Author: | Alexandrus [ 02 Oct 2007, 22:10 ] |
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Daca tu zici ca problema nu exista, tu stii mai bine, doar tu conduci masina. Insa pare ca exista o problema din ce ai scris undeva mai sus. |
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| Author: | occ [ 03 Oct 2007, 00:16 ] |
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horia...keep the good work !Eu stiu masina(nu doar din vorbe) si imi place dinamica f mult care o are...!
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| Author: | centoquarantasette [ 03 Oct 2007, 12:12 ] |
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 Occ si MadkatNimeni nu si a pus problema daca asfaltul in Victoriei este alunecos
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| Author: | Tupac [ 03 Oct 2007, 14:47 ] |
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Bai nene..io nu cred pe nimeni...asa ca vreau masina la test drive  
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| Author: | centoquarantasette [ 03 Oct 2007, 14:52 ] |
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| Duminica - warm up and test drive
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| Author: | centoquarantasette [ 03 Oct 2007, 14:54 ] |
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AA.. uitasem: Cine imi poate aduce un sticker alfaclub.ro si un suport de numar? |
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| Author: | centoquarantasette [ 03 Oct 2007, 14:55 ] |
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madkat Quote: aici in topic ne inscriem sau se face subiect separat ? 
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| Author: | Tupac [ 03 Oct 2007, 15:03 ] |
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centoquarantasette Quote: AA.. uitasem:
Nea Mirica care este Cine imi poate aduce un sticker alfaclub.ro si un suport de numar?
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| Author: | Meme [ 04 Oct 2007, 11:24 ] |
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As fi venit duminica insa o sa fiu la Buzau - cineva si-a adus aminte ca in tara se mai faceau si curse legale si a hotarat sa ne ofere posibilitatea sa ne "descarcam" ! poate ne vedem duminica seara sa vad si eu ce si cum e
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