concept1
Key Veteran
Location: Youngstown, OH
| I was using the stock 50 amp esc with no problems on 8s, I went with the 1000kv because the RCP had ballistic power on 8s but 4 min flights, the 1000kv gave me longer fight times with pretty good power. Now I am running the Castle HV85 esc and may go with 10cell and either the 800kv Z30 or stick with the Scorpion 1000kv and try 9s. going with the A123 cells you need to go as high a voltage as you can to get the flight time, going with a higher KV motor will give the power you want but flight time will go down. the stock 890 motor I was getting 7 or 8 minutes on 7s A123, hard to recall now but it was real sluggish, but flight time was great. 7s A123 will give less performance then 6s lipo, but 8s will outperform the 6s lipo. A123 can only sustain 2.7v where lipo will sustain 3.4 I believe, so even though both 6s lipo and 7s A123 show 25.2v with no load, the A123 7s pack will only produce 18.9v and the 6s lipo will produce 20.4, but 8s A123 is 21.6. |
