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Jakie przełożenie? - ostrekola.pl - Ostre Koło Forum



Jakie przełożenie?

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Jakie przełożenie?

Postprzez norberts » 5 lip 2016, o 23:46

Witam, jakie przełożenie byłoby najlepsze dla osoby która jeździ zazwyczaj do 20/25km/h po mieście, częsta zmiana tempa (przejazdy przez krawężniki,tory)?
Jaka jest różnica między przełożeniami z tyłu i przodu? tzn czy na 52/18 jeździ się tak samo jak na 48/14 itp?
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Re: Jakie przełożenie?

Postprzez AfroMetal » 6 lip 2016, o 14:59

Im mniej zębów, tym szybsze zużycie łańcucha i zębatek. Mniej zębów = krótszy łańcuch = lżejszy rower. Więcej zębów = mniejsze naprężenia łańcucha. 52/18 = 2.88, 48/14 = 3.42, więc tak, to znaczna różnica. Ale już np. 46/16 = 2.875, to bardzo podobne przełożenie do 52/18.

Na przykład tu: http://www.bikecalc.com/speed_at_cadence możesz wyliczyć jakiego przełożenie potrzebujesz do prędkości 20/25km/h przy danej kadencji. Zdrowa kadencja to od 90 do powiedzmy 120, więc 46/20 lub 48/20 powinno być dobrym przełożeniem.
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