bmichels
Heliman
Location: belgium
My Posts This: Topic Forum | Why not going for 2 cells ???Based on my current infos, I think that I really prefer going with the “standard Rx” route (AR6300) than the 1 cell convertion for the 4-1. This will allow me to use my curent Graupner "big programable' Transmiter.
But before I do this, I still have one question: What is the real advantage to go 1 cell rather than 2 cells.
In my understanding, the 2 gr weight advantage on the battery ( 11 gr for 1s400mA instead of may be 13gr for 2s 220 mA) really don’t pay for the complication on the Rx'sconversion and obligation to use a Spektrum Rx, the Servos (and gyros ?) that will not work at full speed/torque, and, more important, the motor that will under 1 cell be less efficient that a similar motor (with lower Kv of course) under 2 cells ?
In addition, under 2s, we can use some very light tail motors like this 1,4 grammes (the weight saved here pay by irself the extra weight of the 2 Lipos! ): http://www.wes-technik.de/English/Motors-Brushless.htm
And also use this type of Falcom Combo at 4,8 grammes for 2 servos + FM Rx. Again, the weight saving pays for the 2s battery.
But since most people go the 1 cell operation route, I must be wrong somewere ? What did I miss ? J
Thanks for your kindness
UPDATE: je viens d'apprendre de FALCOM que leur combo 4,8 gr fonctionne aussi sous 3 volts. Donc, c'est aussi une solution pour ceux qui veulenbt rester en 1 cell(a condition que les 2 servos digitaux inclus aient assez de peche sous 3,5 volts !) |
On the other hand, I think Walkera is running into some real issues of its own integrating the belt-driven tail given the size of the heli and the small narrow boom that it has to go through. That's why it's been all talk and no action. In the end... I fear the 4g3 is going to end up with just the CP and perhaps a brushless motor without the real improvement on the tail... What do you think? 
