Testing different LiPos
Posted: Sun Aug 28, 2016 11:27 pm
Hi,
While browsing the HobbyKing website I stumbled upon some LiPos that could be used with the CF2: The Turnigy nano-tech 260mAh 1S 35-70C Lipo Pack is quite similar to the original LiPo. Both weigh 8g and have almost the same size. Compared to the original LiPo (which has 240mAh), the Turnigy LiPo has an additional 20mAh (260mAh).
There were no noticeable differences during the first flight. I had no time yet to compare the flight times, but I expect it to be in the range of a few extra seconds.
The Turnigy Graphene 750mAh 1S Lipo Pack weighs 18g and has triple the amount of mAh.
CAUTION: Do NOT connect this LiPo to the CF2 without modification! I almost found out the hard way: The polarity of the connector is flipped! It could seriously damage your CF2.
Fortunately this is easy to fix. You just need to cut the black heat shrink around the connector/cable and use a cutter knife or something similar to press down the little hooks, that hold the cables in the connector casing. Then flip the cables around and put them back into the connector (compare it with the original CF LiPo connector).
Sadly the flight test was disappointment. Even with 100% thrust the CF hardly lifted off more than a few centimeters. This is surprising for me because the total weight with the bigger LiPo is 38g, which is less than the 45g CF FPV mod that flew sluggish but could definitely lift off the ground and fly around. With a discharge rate of 65C Constant/130C Burst compared to the original 15C discharge rate I don't think that is the problem.
If anyone has an idea what I could be missing here, please let me know.
Regards,
Fred
P.S.: While writing this post, I found another potential LiPo replacement:
Turnigy nano-tech 300mah 1S 45~90C Lipo Pack.
While browsing the HobbyKing website I stumbled upon some LiPos that could be used with the CF2: The Turnigy nano-tech 260mAh 1S 35-70C Lipo Pack is quite similar to the original LiPo. Both weigh 8g and have almost the same size. Compared to the original LiPo (which has 240mAh), the Turnigy LiPo has an additional 20mAh (260mAh).
There were no noticeable differences during the first flight. I had no time yet to compare the flight times, but I expect it to be in the range of a few extra seconds.
The Turnigy Graphene 750mAh 1S Lipo Pack weighs 18g and has triple the amount of mAh.
CAUTION: Do NOT connect this LiPo to the CF2 without modification! I almost found out the hard way: The polarity of the connector is flipped! It could seriously damage your CF2.
Fortunately this is easy to fix. You just need to cut the black heat shrink around the connector/cable and use a cutter knife or something similar to press down the little hooks, that hold the cables in the connector casing. Then flip the cables around and put them back into the connector (compare it with the original CF LiPo connector).
Sadly the flight test was disappointment. Even with 100% thrust the CF hardly lifted off more than a few centimeters. This is surprising for me because the total weight with the bigger LiPo is 38g, which is less than the 45g CF FPV mod that flew sluggish but could definitely lift off the ground and fly around. With a discharge rate of 65C Constant/130C Burst compared to the original 15C discharge rate I don't think that is the problem.
If anyone has an idea what I could be missing here, please let me know.
Regards,
Fred
P.S.: While writing this post, I found another potential LiPo replacement:
Turnigy nano-tech 300mah 1S 45~90C Lipo Pack.