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2 batts

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Old 03-30-2005 | 11:12 PM
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Default 2 batts

Has any one tried it or know if the honey bee or dragonfly can hold the weight of 2 batteries, thinking lipo's because they seem to be lighter.

Here was my idea.
1) Set the battery tray up to hold two batteries
2) Use an old battery connector and some spare wire to make a setup of the batteries in parallel
3) extend the running time if it can handle the weight by double - added weight reduction time.

theorhetically in parallel the batteries are at the same voltage as one battery... only problem is the you may also need to modify it to have an inline fuse or something to limit the current, although in the ideal case I = V/R and both V and R are the same. However R is actually a little bigger due to added wire resistance. In any case theory is only to be matched by actually trying. It would be awesome to be able to do this if they can take the weight. with some lipo's you could theorhetically fly for an hour or more then.
Old 03-31-2005 | 06:37 AM
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Default RE: 2 batts

Just get yourself a 7.4 volt, 2100mah lithium battery, that will give you about 15 to 20 minutes of flying (depending on how hard you fly). That's more then long enough for those little motors (they get to hot). I have one on my HummingBird, works great.

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Old 03-31-2005 | 07:31 AM
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Default RE: 2 batts

do you have heat sinks on your motors?

Actually what i was thinking was to be able to fly with two 11.1v lipos. that would give about 40 mins or so depending on a few factors.
Old 03-31-2005 | 07:51 AM
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Default RE: 2 batts

Yeah I do have heat sinks on my motors, but they still get hot. The problem with 11.1 volts is they are a lot heavier, and the last thing you want to do is add weight to your micro heli, you want to try and take weight off if you can (get them as light as possible).

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