Novak Ballistic 550 4.5T enough with 25C 4000mah LiPO?
07-20-2010, 06:31 PM
#2
It should be fine, lot's of people run the 4.5 on 2S. For lower current draw and better runtimes it wouldn't hurt to run 3S on a lower kv wind, 5.5 or 6.5 (unless you have to run 2S for racing?)
07-20-2010, 06:49 PM
#4
25C x 4000mAh = 100A draw
At 7.2v that would be a motor power requirement of a 720 watt motor.
Check the motor chart. The Novak Ballistic 4.5 states 890 watts. I'd go 30C 4000mAh or 25C 5000mAh. The 25C would probably warm up well and possibly puff if really pushed hard.
http://www.teamnovak.com/products/br...spec_chart.htm
At 7.2v that would be a motor power requirement of a 720 watt motor.
Check the motor chart. The Novak Ballistic 4.5 states 890 watts. I'd go 30C 4000mAh or 25C 5000mAh. The 25C would probably warm up well and possibly puff if really pushed hard.
http://www.teamnovak.com/products/br...spec_chart.htm
07-20-2010, 06:51 PM
#5
I run the Ballistic 550 4.5T on 30c 5200mAh 2s batteries and I have zero cogging issues at any part in the throttle . Mine is super smooth ....
07-21-2010, 07:50 AM
#13
Our 25C rating guidance
A poster on another thread asked why we specified 25C for the new Kinetics and the Havoc Pro SCs:
So I asked the Engineers:
High quality Li-Po/Li-Fe batteries are recommended.
Using Li-Po/Li-Fe batteries that cannot supply the amount of current required by this system will result in possible battery pack, ESC and motor damage, and will void the warranty. It is recommended to use a 25C or higher rating.
Using Li-Po/Li-Fe batteries that cannot supply the amount of current required by this system will result in possible battery pack, ESC and motor damage, and will void the warranty. It is recommended to use a 25C or higher rating.
25C or more rating for the battery refers to the internal impedance of the Lipoly battery.
Any cell that has less than this 25C rating will have a fairly high internal impedance that allows the voltage (during braking) to rise well above the safety limit of the ESC MOSFETs and possibly damage the ESC.
Also, during heavy acceleration, the high impedance of the cell causes the battery voltage to drop and the receiver glitches.
Any cell that has less than this 25C rating will have a fairly high internal impedance that allows the voltage (during braking) to rise well above the safety limit of the ESC MOSFETs and possibly damage the ESC.
Also, during heavy acceleration, the high impedance of the cell causes the battery voltage to drop and the receiver glitches.
09-22-2011, 07:01 PM
#14
Tech Apprentice
iTrader: (11)
Havok sc pro 550 4.5 shuts down my receiver every lap or so for 1 to 3 seconds with 5400 25c lipo 2s. I changed to 5200 35c 2s and problem goes away. Go back to 25 c problem comes back. Any thoughts. Would esc timing have any effect. Just curious I now run a 5600 50c 2s w/o any issues. Seems like 135a would be sufficient but is not?
10-08-2011, 06:29 PM
#15
4800 25c in sc10 4x
I am running 4800 25c gens ace saddles in my sc 10 4x with a havoc pro sc and the ballistic 4.5 and am geared 14/62 right now with a clutch basket . Run fan on motor w heat sink and a fan on esc and come off after 17 min run times at 120 on motor and under 100 on esc. This is on a indoor clay track No cogging , no brown outs with a savox 1258 servo. Yeah the punch is not there like higher rated batteries give , but no issues. Pluss 29 bucks for a set of saddle is nice for practice vs 100 + for "good" high c rated lipos for racing
just my 2 cents
just my 2 cents