部MR02忽然變慢

除了沒電之外,還會有什麼原因? 會否motor死了?Thanks!

I think the ESC (FET) may dead

What motor are you using? Did you add fets? Did you try a new pack of battery?

原帖由 billy86che 於 2007-1-24 11:44 發表
What motor are you using? Did you add fets? Did you try a new pack of battery?

I am using Atomic Stock motor, I did add FET, 6 FETs! Try other batteries already, no improvement!

the brushes run out ! change the brushes

原帖由 Evo5 於 2007-1-24 14:16 發表
the brushes run out ! change the brushes

But I can see there still about 1mm thick? Is it normal? Thanks!

原帖由 scalpel 於 2007-1-24 14:22 發表


But I can see there still about 1mm thick? Is it normal? Thanks!

I guess Evo 5 has offered you the right answer. Atomic type has brushes with springs that are not linear enough. When the brushes have worn out a little, there is not enough force for the spring to press them onto the commutator. You can replace the brushes, but a better way is to use the rotor on another motor case that is using brushes with longer 'arms'.

By the way, check the soldering of the FETs.

[ 本帖最後由 billy86che 於 2007-1-24 17:46 編輯 ]

謝謝各位的建議!

諗得簡單D 會唔會只係 bearing 　污糟，或　摩打銅頭污糟？
或可先細心聽下架車o既空轉加速聲自唔自然，
( 由慢速漸漸加快時 有D "VV" 聲 應該係由 輕聲漸漸變大，加到全速就冇VV聲。)
聲音唔自然可能電子野 或 遙控問題。

我之前都試過部車無啦啦變慢,多數係摩打問題~~

原帖由 韓哥 於 2007-1-24 20:20 發表
我之前都試過部車無啦啦變慢,多數係摩打問題~~

Thanks for reply! I will check it!