View Full Version : 2s or 3s?
bpd964
07-09-2008, 09:54 AM
OK.. just ordered my Gaui 200 because that copterx 200 is a pos and parts are heck to get.
Anyway, who is using a 3s setup?
is it better than 2s?
Buzzkill
07-09-2008, 10:08 AM
Pros use 2S many here use 3S. I personaly use 2S.
bpd964
07-09-2008, 10:52 AM
Thanks.. guess it'll be 2s..
Buzzkill
07-09-2008, 10:59 AM
Lots of people use 3S too. Depends on what type of flying your doing I guess.
bpd964
07-09-2008, 12:34 PM
I plan on just buzzing around in the house.. Who knows, maybe I can learn my inverted flying on this thing....
I ordered a 2s lipo and since I already have a 3s-800, I will give both a try and see what gives..
Thanks
bpd964
07-09-2008, 12:45 PM
:Bang
crash1000
08-12-2008, 07:18 PM
and the result of 2s VS 3s?
MonsterMaxx
08-12-2008, 08:32 PM
I plan on just buzzing around in the house. You are in for a big surprise. Unless you are the best pilot in the world the most you'll do indoors is hover it.
It's a fast mover and flys big.
rappyrex14
08-12-2008, 08:39 PM
not for nothing...but its near impossible to learn inverted on this baby. its so twitchy its nuts.
none the less-more power to you.
personally-2 cell is more than enough power/headspeed to get around well. 3 cell turned the gaui into a airplane propellor. imo its overkill.
if you want a bit more power- run 2 cell with the 20 dollar zpower 5150 motor.
don
Jetleaf
08-12-2008, 09:25 PM
Hey I'm sure it's probably time to redecorate the place anyway.
crash1000
08-13-2008, 06:23 AM
what about 3s and 10T? HS will be the same?
3s 600mah 10T = 2s 800mah 15T
pros:
so for the same weight is flytime just a little more...
Same HS
Less Amp
les bogging
rappyrex14
08-13-2008, 10:17 AM
do they make a 10 tooth for belt?
jimgrant
08-13-2008, 10:21 AM
do they make a 10 tooth for belt?
no
crash1000
08-13-2008, 11:30 AM
there is other 2.3mm shaft pions 10T?!!!!??! not from gaui... but so what?!
crash1000
08-13-2008, 11:35 AM
example;
http://www.helidirect.com/product_info.php?products_id=377
R0t0R
08-13-2008, 11:42 AM
there is other 2.3mm shaft pions 10T?!!!!??! not from gaui... but so what?!
Maybe I'm missing something here. What good would a 10t pinion do for the belt? Wouldn't that lower your head speed and therefore also the tail speed? Afterall, the pinion doesn't drive the tail rotor directly as in the SD. It drives the main gear which has the belt gear as part of it.
The 10t a lot of us use is part of the 15/10t SD pinion and is an upgrade from the 15/9t that comes with the kit and drives the torque tube directly from the pinion with the crown gear.
crash1000
08-13-2008, 11:50 AM
3s 10T = 2s 15T (on belt drive give you the same HS head and tail )
I am wondering way not use 3s setup?! It will give you;
more flytime
Less Amp
les bogging
jimgrant
08-13-2008, 12:00 PM
But why would you want to put a 10T pinion on the motor of a belt tail Gaui.. the head speed would be far too low
R0t0R
08-13-2008, 12:11 PM
3s 10T = 2s 15T (on belt drive give you the same HS head and tail )
I am wondering way not use 3s setup?! It will give you;
more flytime
Less Amp
les bogging
That's beyond my feeble little brain. Is that how it works? Cell count times tooth count? I see where you are going with this, but I'm a newbie and still trying to figure out all this stuff.
If you want to try it and can't find a 10t pinion, you can always buy a 15/10t pinion and cut off the 15t part. http://www.readyheli.com/203128_Pinion_Gear_Set_15T_x_10T_Hurricane_200_f_p/203128.htm
jimgrant
08-13-2008, 12:25 PM
yes Right... the current draw would not necessarily be less though
crash1000
08-13-2008, 12:46 PM
watt = volt x amp
gaui200 hover at X watt , so more volt is less amp for the same hover.
jimgrant
08-13-2008, 12:56 PM
watt = volt x amp
gaui200 hover at X watt , so more volt is less amp for the same hover.
Seems to be a common misconception... The watts dissipated by the motor will increase, if the voltage is increased. The motor being the load, which remains constant , in ohms, (or milli ohms) if the voltage increased , the current must also increase.. I = E/R , (ohms law ) wattage is also I sq R, so if R remains constant wattage will increase with the increase in I
jimgrant
08-13-2008, 01:07 PM
The manufacturers wattage rating of a motor, is the max wattage that motor can dissipate without overheating. a 200W motor can dissipate UP TO 200w. it is not a constant. The only constant in the equation is the load in Ohms of the motor
stoatnchips
08-13-2008, 01:37 PM
The only constant in the equation is the load in Ohms of the motor
The load of the motor will change as it heats up due to the Temperature Coefficeint of copper. Depends how much the motor heats up... as to how significant this is... also the Semi-conductors will also change under higher heat conditions.
small.planes
08-13-2008, 02:07 PM
The amount of current drawn depends on the load the motor is seeing. A motor can provide upto is rated wattage, but if it is only loaded to 1/2 of this then it will only need to provide 1/2 of the watts (plus any parasitic load in just turning over) to maintain a steady speed.
Dave