Hi
I'm part way through a new Skyjib X4 build and need a little advice. I will be running MN4014-11 motors with 15” beech props from two parallel 6S lipos. Mainly, I will be carrying a GH3 for video but also a NikonD800E for still aerial photography. I will probably be using the besteady one gimbal, which come in at just over a kg without camera. I was tempted with the zenmuse for GH3 but the limitation with respect to lenses and filters has steered me away from this.
My question comes down to connectors for the lipos. I've always used HK lipos (either nanotech or turnigy) and although they are arguably not the best, I have never had problems with them and will use them for this build. I plan to use two 6000 mah 25C nanotechs; these come with 4mm HXT type bullets. Are 4mm bullets sufficient? From a practical point of view, I would like to use 4mm bullets as this is what I have always used. I bought some XT90's recently, but they are so damned tight (even with silicone lube spray) that separating them is incredably hard and frustrating and will be a real PITA when wire are soldered on.
HK rate their 4mm gold bullets at around 90A so my thinking is that these will be adequate. The spec sheet for the MN4014s with relevant voltage and prop size suggests each will draw a maximum of around 14 or 15A at full throttle. Two lipos for eight motors means each connector should only have to take up to around 60A max, well below the 90A spec for the 4mm bullets. I guess the only problem come if I get a lipo failure and one lipo then has to feed all eight motor; the current passing from the surviving lipo could be over 100A.
Have I got my sums right or am I barking mad? Do most folk use XT90s? I much prefer bullets but obviously dont want to put my beautiful new craft at risk.
Any input would be really appreciated.
Chris
I'm part way through a new Skyjib X4 build and need a little advice. I will be running MN4014-11 motors with 15” beech props from two parallel 6S lipos. Mainly, I will be carrying a GH3 for video but also a NikonD800E for still aerial photography. I will probably be using the besteady one gimbal, which come in at just over a kg without camera. I was tempted with the zenmuse for GH3 but the limitation with respect to lenses and filters has steered me away from this.
My question comes down to connectors for the lipos. I've always used HK lipos (either nanotech or turnigy) and although they are arguably not the best, I have never had problems with them and will use them for this build. I plan to use two 6000 mah 25C nanotechs; these come with 4mm HXT type bullets. Are 4mm bullets sufficient? From a practical point of view, I would like to use 4mm bullets as this is what I have always used. I bought some XT90's recently, but they are so damned tight (even with silicone lube spray) that separating them is incredably hard and frustrating and will be a real PITA when wire are soldered on.
HK rate their 4mm gold bullets at around 90A so my thinking is that these will be adequate. The spec sheet for the MN4014s with relevant voltage and prop size suggests each will draw a maximum of around 14 or 15A at full throttle. Two lipos for eight motors means each connector should only have to take up to around 60A max, well below the 90A spec for the 4mm bullets. I guess the only problem come if I get a lipo failure and one lipo then has to feed all eight motor; the current passing from the surviving lipo could be over 100A.
Have I got my sums right or am I barking mad? Do most folk use XT90s? I much prefer bullets but obviously dont want to put my beautiful new craft at risk.
Any input would be really appreciated.
Chris
