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N-are importanta; in orice situatie, rulmentul de presiune e in contact permanent cu diafragma placii de presiune.
@cipo.
Nu e absolut nici o problema a rulmentului; problema e daca acesta scoate zgomote anormale la actionarea pedalei de ambreiaj.
Sunetul specific de autobuze la vitezele inferiore /treapta 1,2,(3) este prezent la toate cutiile de viteze la masini dotate cu motoare slabute -ca unghiul danturii pinionelor nu sunt inclinate destul de mult intentionat si bine calculat pentru a cistiga o forta de cuplu cat mai mare.Cat mai drept este dantura la un amsamblu - cuplu de pinion ,atat mai mare este forta de cuplu ,dar si zgomotul.Cutiile de viteza la masini de curse sunt concepute cu pinione cu danturi drepte ,dar au un zgomt asurzitor ,bineinteles ,la ei numai forta conteaza.
Deci este un compromis la crearea unei masini cu motor mic, forta cat de cat, sa fie si silentios.
Antif0narea corespunzatoare ajuta mult, ,dar asa creste pretul masinii.
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