Odlahcenie zotrvacnika Leon 1,8T

Zdravim,

rozmyslam ze si dam odlahcit zotrvacnik.
Vedel by mi niekto poradit na co si treba davat pozor aby sa mi nerozletel pocase, pripadne ake su vyhody a nevyhody lahkeho zotrvacnika.
Mala by sa troska zlepsit akceleracia ak sa nemylim. Je to aspon trocha viditelne ked z povodneho neviem kolko moze mat cca 12Kg nechcem prehanat sa spravi 3,5Kg?

no ked zmensis zitrvacnik tak ti pojde motor rychlejsie do otacok ale zase ti rychlo z nich pojde aj dole. Dalje si treba uvedomit ze kym s tymto zotrvacnikom mas volnobezne otacky cca 900 tak s 3,5Kg budes mat 1500 minimalne (myslim si ze aj viac) a ti dost zvysi spotrebu.

Myslim ze do tych aut to nedavaju zbytcne... a myslim ze lepsie to je teraz... budu dost padat otacky takze s plynom sa budes musiet viacej hrat... ja by som nieco take na aute nerobil

Odlahčenie zotrvačníka je na športové účely, kde sa s plynom hrať chceš/potrebuješ takže ak ti nevadí tá spotreba, ktorú auto bude mať, tak je to vlastne len na tebe.

Otacky by sa vobec nemali zmenit. zotrvacnik motor nebrzdi vahou. otacky su nastavene elektronicky na urcite cislo. a v pripade nahodneho zvysenia by sa dali zasa elektronicky nastavit. Koli comu by mala narast spotreba?

nasiel som jeden prispevok celkom velky a tam aj popisuje spotrebu. zaujmave citanie




Ok, let's break it down to basics...

Mass = Inertia

Inertia = Resistance to motion change

If you have more mass, you have more inertia... and therefore more resistance to change in motion. Objects with more inertia require more force to change their direction/speed/motion than objects of lower inertia.

In the case of the heavy flywheel, that's more resistance to acceleration as well as deceleration. When your engine is spinning in neutral and you engage the clutch to start moving, the flywheel helps your engine overcome the added load of the car's mass... effectively, the inertia of the flywheel (spinning) helps to overcome the inertia of the car (sitting still, not wanting to move). If your flywheel weighs 20 pounds and your car weighs 2000 pounds, you can see that a 20 pound flywheel will help to move the car better than a 10 pound flywheel will. It resists the change in motion that the car is imparting upon it more than the lighter flywheel, so it will require less input from the engine, and start the car moving along a bit smoother.

Analogy:

Ever go bowling? Compare an 8 pound bowling ball to a 16 pound bowling ball. The 8 pounder is easier to accelerate (from the stopped position to you throwing the ball at higher speed) and easier to direct (aim). Your arm also gets less tired with the 8 pound ball. The drawback is that the ball loses more speed toward the end of the bowling lane, and may not knock down as many pins as you want. You also have to be more careful with controlling the direction of the ball, since it's easier to fling out the wrong way if your arm twitches or something The 16 pound bowling ball is harder to accelerate and harder to direct, but it carries more speed at the end of the bowling lane because of its higher mass (and resulting higher inertia). It knocks more pins down. It's also harder to send the ball careening into someone else's bowling lane, because it's harder for your arm to suddenly jerk it to the side.

Now relate this analogy to a car... the pins at the end represent your car's weight/mass, the bowling ball is the flywheel, and your arm is the engine. The lighter flywheel will be easier to accelerate and decelerate- so you'll have quicker starts, faster acceleration because the flywheel has less inertia to overcome, and quicker shifts because the revs drop faster when you let off the throttle. The downside is that you have to control the flywheel more, since the direction (speed of rotation) varies that much more. This is why people say that an "8 pound flywheel isn't good for a daily driver". I don't have any problem driving with mine. The heavier flywheel has higher inertia than the lighter one, so it will start your car from a stop more easily (knock down more pins), but it will hurt you everywhere else. It takes more force/power to accelerate (overcoming more inertia), doesn't allow you to shift as quickly (revs don't drop fast enough), but it is easier to drive because the speed of rotation doesn't change as rapidly as the lighter flywheel. Small changes in your throttle position don't change the revs as much, because the power blips are just soaked up in the heavier flywheel. This is why people might think that "a lighter flywheel takes more gas while cruising", because that lighter flywheel takes more attention at the gas pedal than the heavier one to maintain speed. The lighter flywheel will give you better gas mileage.. ever push that 8 pound bowling ball on the ground at a constant speed? Now try the 16 pounder- which one takes more energy to push? The 16 pounder. It's the same as the flywheel.

Do you lose torque with the lighter flywheel? Yes and no. You lose torque to start the car moving, since less energy is stored in the flywheel- so you have to apply more torque from the engine. On the other hand, you use less torque to overcome the inertia of the flywheel while accelerating and decelerating, so you can use the torque from your engine more effectively. You don't lose any torque when going to a lighter flywheel- you just change the source and application of torque in your car's drivetrain.

So...

Light flywheel: better acceleration, better mileage, takes more skill to drive
Heavy flywheel: worse acceleration, lower mileage, takes less skill to drive

It's that simple.

no, podla mna to, ze otacky rychlejsie klesaju je skor vyhoda ako nevyhoda.. mne sa to zda po presadnuti z motorky do auta (vw golf) ako keby sa mi zasekaval plynovy pedal.. strasne mi to vadi...

Jedine si budem asi muset zvyknut pri preradovani nech to tak nesklbe inak si myslim ze to bude prinos po vsetkom co som si vcera precital...teda prinos pre mna. inemu by to prekazalo. Chcem sa opytat este ci niekto nevie vypocitat o kolko sa zmeni zrychlenie ked pozname Vahu auta, vykon, zrychlenie a vahu zotrvacniku

tam sa zrychlenie az takj velmi nezmeni a hlavne este by ma zaujimala akeho mas leona lebo tam su vykony od 110 do 165 KW(posledny v CupreR so 4x4 nahonom). No ak mas len predny nahon tak tam ti to je uz pomaly na dve veci lebo pri zrychleni z 0-100 su limitujuce hlavne pneumatiky.

Dalej volnobezne otacky sa ti musia zvysit uz len z toho dôvodu ze kym mas tazky zotrvacnik stacia motoru mensie otacky aby sa udrzal v chode. si zober ze pri 500 otackach moptor trase jak najaty lebo uz nema dostatocnu zotrvacnost aby sa pretocila klukova hriadel, a to iste sposobi mensi zotrvacnic cize motor bude triast autom trebars pod 900 otacok a hladky volnobezny chod bude mat tak 1300-1700

tie otacky su aj tak nepodstatne pre mna aj ked by to stuplo. konkretne mam Leon 1,8T 20V s povodnym vykonom 132kW momentalne to ma 166kW, momentalne to ma 7sec na stovku a tym zotrvacnikom sa chcem dostat pod 7. Momentalne su tam yokohamy celkom drzia ale musim ich aj tak vymneit lebo uz dosluhuju.


len dalsia vec. neviem ci sa mam pustit do odlahcovania alebo racej kupit odlahceny. pri tom vykone sa bojim ze by to seriovy nezvladol a take roztrhnutie by sposobilo extremne skody

radsej by som kupil original dielec uz odlahceny, ak taky zozenies

Nebude treba pri prudsej akceleracii viacej tlacit plyn do podlahy?

no neviem ci som neskoncil na dlhsiu dobu so zotrvacnikom. dnes sa mi poskodil homokineticky klb,,,,,,este uvidim ci mi kamos zozenie novy za rozumnu cenu. ja som nasiel len sadu za 6 tisic a to je mi tak na hovno.

Ako si poskodil ten homokinetak ?
Inak do toho zotrvacnika by som sa nepustal osobne.

sam od seba zacal poceste klepat. Auto bolo pak na zdvihaku tak to tam dako zapadlo teraz neklepe len si zhanam najrozumnejsu cenu. najlacnejsie som nasiel zatial 3150sk. nikde neviem najst normalny odlahceny zotrvacnik na moje auto. asi pojdem na vrakovisko kuknut ci tam neni daky rozbity leon ze by som zobral origos a skusil odlahcit. ak sa daco stane tak si nahodim nazad origo. teda alebo je daka firma co by ho dako upravila nech znesie ten napor?

Ako by si to chcel odlahcit?
Navrtat diery?

Nuz ja nebudem odlahcovat lebo by to nedopadlo dobre dam to niekomu robit. Diery sa tiez ale vrtaju ale to je len male odlahcenie. Ale tak chcel by som dosiahnut tak vahu 3.5kg

Daj sem obrazok toho zotrvacnika, prosim.

nemam to pofotene. preco to potrebujes?

Malo by to vyzerat priblizne takto: http://img229.imageshack.us/img229/892/ ... nikjs8.jpg

Chcel som to vidiet. Nasiel som cez Google aj taky, co bol predierovany az-az.
Ak je ten zotrvacnik taky, aky sem postol Spirit, navrtanim dier a otvorov vo vhodnych miestach to urcite bez problemov odlahcis.
No miesta na vrtanie alebo radsej cely proces odlahcenia nechaj odbornikom. Nikdy nevies, ci si vyvrtal dieru v spravnom mieste a pri vysokych otackach sa Ti to moze aj rozletiet a rozdrbe Ti celu prevodovku.
Rozhodujuca je hlavne velkost a hustota dier.

celkovo to treba dako upravit po odlahceni. bez uprav by nevydrzal napor a ak by sa rozpadol tak by porobil omnoho vacsie skody ako len prevodovku. na nete si mozes pozret co to spravi autam ked sa roztrhne.