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Boca Bearings . Modefo's RC Helicopters . XHELI.COM

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e-Align T-REX 250-450-500-600 > T-REX 450 A123 + Scorpion HK2221-6=INSANE POWER!!!
 
 
thegamer
Heliman
Location: Spain

I have a Mini Titan with HK2221-8 v2 and 3S A123 cells and a 14T pinion. I also use 3K carbon fiber blades from align.

Depending of my flying style, I can fly between 5:30 and 6 minutes and recharge about 1850-1900 mah. Mini Titan is heavier than T-rex, so flight times should be better on Align machine. I have tried the 15T pinion: Headspeed is higher and flight times are about 5 minutes. I run it on 90% governor mode.

With this setup the power is near the stock setup with lipos. I can do almost everything (rolls, flips, inverted flying, slow tic-tocs) but you canīt do hard 3D, because during hard manouvers the headspeed slow too much.

So if you are not a 3D guy, yo can do mild 3D flyings with 15 min of recharge and 500 cycles per pack.
05-22-2008 11:58 AM
 
 
discus
Heliman
Location:

Woo, sounds interesting! Is it possible to show me how to solder those a123 together? Thanks!
07-13-2008 07:14 AM
 
 
thegamer
Heliman
Location: Spain

Sorry, I can't show you that because I bought my A123 packs to bigerc.com. However, you can google it to find what you are looking for.
07-13-2008 01:41 PM
 
 
electricdurango
Veteran
Location: Sterling, VA

What kind of balance tap is that. Looks like a serial port.

450se v2
07-13-2008 01:53 PM
 
 
sid-fmx
Senior Heliman
Location: Las Vegas, NV

Exactly what I was looking for. Great thread.
09-06-2008 12:29 PM
 
 
wrathofkhan
Veteran
Location: LA, CA - US

I have been testing out various configurations of a123 3s packs, but still am not getting flight time close to 7 minutes (as stated earlier on the post).

i have tested with the following:

motors (4400kv)
neu 1107/1.5y (longer flight time)
scorpion -6 (seems more powerful)

esc
cc35 (used flat line throttle curve_
jazz 40-6-18 (get longer flight - used governor mode)


for the above mentioned, i used different pinions ranging from 13T to 16T. but i never got 7 minutes of flight, my shortest was with scorpiron -6, cc35 with 15t pinon. lots of power, but flight time was a tad less than 4 mintues.

khan

PS i thought that the 3s a123s are a bit too heavy for autos, but i was wrong, it autos fairly well

i am thinking of testing out 4s configurations now - maybe
09-08-2008 07:30 PM
 
 
sid-fmx
Senior Heliman
Location: Las Vegas, NV

Thanks for the info and let us know how the 4s works out.
09-09-2008 12:28 AM
 
 
SkaterX
Heliman
Location: Canada

Running 4s1P A123 with the Scorpion 2221-6 and Flight Tech 40... 12 tooth pinion.

This setup gives me about 5 min of power house 450 action... @ the 5:30 mark the blades slow down to a head wobble lol.

Temps are about 120F on speed controller and 110F on the motor and 100F on the batts.
10-05-2008 08:52 AM
 
 
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Autography FlightPower . Advantage Hobby . Revolution Models

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e-Align T-REX 250-450-500-600 > T-REX 450 A123 + Scorpion HK2221-6=INSANE POWER!!!
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