It fell out of the sky.

Stormyj

Stormyj

Member
Ive got a question for ya all. I had a problem this afternoon while flying. I took off, up to about 50' and was trying out circle. It flew out and started to circle around, got about half way through and dipped to one side and fell out of the sky. I cleaned it up and put on a new prop, connected the battery and started it up to just a hover around 6', stayed there for 5 secs or so, then tipped and crashed again. I flipped it over and just ran up the motors, which now wouldnt even create enough lift to flip the quad over. I took off props and was playing with it. Found that if I put a different battery on it, it was fine. The battery might have 6 flights on it at 6 min a piece. Here are my specs. 550mm frame, apm 2.8, ntm prop drive 28-26 1000kv/235w 15a max, hk 20a esc, 9x4.7 props, zippy compact 2200mah 3s 25c(35cburst) lipo. I thought I might be drawing too much from the battery and caused it to fail. What do you all think.
 
Stormyj said:
Ive got a question for ya all. I had a problem this afternoon while flying. I took off, up to about 50' and was trying out circle. It flew out and started to circle around, got about half way through and dipped to one side and fell out of the sky. I cleaned it up and put on a new prop, connected the battery and started it up to just a hover around 6', stayed there for 5 secs or so, then tipped and crashed again. I flipped it over and just ran up the motors, which now wouldnt even create enough lift to flip the quad over. I took off props and was playing with it. Found that if I put a different battery on it, it was fine. The battery might have 6 flights on it at 6 min a piece. Here are my specs. 550mm frame, apm 2.8, ntm prop drive 28-26 1000kv/235w 15a max, hk 20a esc, 9x4.7 props, zippy compact 2200mah 3s 25c(35cburst) lipo. I thought I might be drawing too much from the battery and caused it to fail. What do you all think.
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What do you have your low voltage buzzer set for? At 3.4v mine will kick LVC in at low battery, if you raise it to something like 3.6 you might stop that.
 
Ill make a comment about zippy packs. They suck. Turns out, 1 cell 4.25, 2 cel 4.25, 3 cell 2.1. Uh, yea, thats why it fell out of the sky. That battery caused the escs to fail I am assuming. Flew on a 3c turnigy just fine tonight. Glad I was over dirt instead of cement, asphalt or people. 1600 grams is a bit heavy to fall out of the sky and hit someone in the head.
 
Stormyj said:
Ill make a comment about zippy packs. They suck. Turns out, 1 cell 4.25, 2 cel 4.25, 3 cell 2.1. Uh, yea, thats why it fell out of the sky. That battery caused the escs to fail I am assuming. Flew on a 3c turnigy just fine tonight. Glad I was over dirt instead of cement, asphalt or people. 1600 grams is a bit heavy to fall out of the sky and hit someone in the head.
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Yeah, they are terrible I had one cell go bad for absolutely no reason with 3 charges on it. Was not pulling 1/3rd it's rating, I only balance my batteries with a trickle charger, and never brought it below 3.7 per cell.
 
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