which brushless system is the best?

我唔鍾意shpere competition cut左個後波function, 以brushless system,
加個後波根本冇成本又冇壞處, 真係唔知點解..

原帖由 lazer 於 2007-5-27 01:24 發表
我唔鍾意shpere competition cut左個後波function, 以brushless system,
加個後波根本冇成本又冇壞處, 真係唔知點解..

Without the reverse function, the ESC can have lower internal resistance and more punch.... if you see a technical specification comparison between 2 brushless ESC (one with reverse, one without), then you'll see the difference.

原帖由 binary 於 2007-5-28 10:53 AM 發表


Without the reverse function, the ESC can have lower internal resistance and more punch.... if you see a technical specification comparison between 2 brushless ESC (one with reverse, one withou ...

Brushless O既 reverse 都係用同一組fet去drive, 只是個drive sequence 返轉.
不是像brushed以反壓去drive.
以lrp呢講, sphere有rev, 而shpere comp. 冇rev, 但呢2隻用o既fet都唔同啦.
如果brushless system 有rev會犧牲performance, 我o念gtb都唔會有rev function啦.

原帖由 lazer 於 2007-5-28 12:58 發表


Brushless O既 reverse 都係用同一組fet去drive, 只是個drive sequence 返轉.
不是像brushed以反壓去drive.
以lrp呢講, sphere有rev, 而shpere comp. 冇rev, 但呢2隻用o既fet都唔同啦.
如果brushless sys ...

Yes..... sphere comp is better comparing with sphere  

[ 本帖最後由 binary 於 2007-5-28 14:49 編輯 ]

2隻唔同model 比較又怎能作準呢.
你留意o下gtb個spec:
"Rated Current (Brushless--per phase) ............540A [Fwd & Rev.]***  "
FWD & REV都係一樣CURRENT..
因為FWD & REV都係同一個driver去drive.
但current就只有一個方向. FWD & REV 只是drive sequence 不同而已.