судя по описанию во второй ссылки (длина корпуса x10),
а вот такой мотор:
Specific RPM/V (KV): 4.000
Can Diameter: 36 mm
Can Length: 50 mm
Shaft Diameter: 3.15 mm
Shaft Length: 15 mm
Weight: 165 g
Fixed timing
к какому классу относится, не уж то к 540?
по формуле получается 500 класс.
у б/к своя маркировка диаметр/длина корпуса, т.е. в данном примере 3650. по сути да, можно сказать что это 540-й класс
ясно спасибо.
А еще на 540 моторах вал обычно 3,17мм.А на 550 уже 5мм.
полезная информация.
узнал все что нужно.
тему можно закрыть.
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