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Other › lipo break in
01-13-2009 12:11 AM  9 years agoPost 21
rexxigpilot

rrProfessor

Florida

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Hovering is a heck of a lot easier on a battery compared to full out 3D. Fast foward flight does not draw much more than hovering except during hard turns. Parasitic drag on the heli canopy/body must be overcome when in motion in addition to producing enough lift to overcome gravity. This all takes watts.

If nothing else, hovering or easy flying (no 3D) for the first flight or so can provide some protection against a defective battery. I have gotten a couple of bad packs that quit on the first or second flight due to manufacturing defects. I was glad I wasn't a couple of feet off the ground doing piro flips when they went bad.

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01-13-2009 12:27 AM  9 years agoPost 22
ckoelliker

rrElite Veteran

St. Simons, GA

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If anything, break them in to watch the pack voltage expand!
I figure I'll run 6 cycles per battery in hover and then go to FFF..
increasing the flight time a bit more each time until I am at 75% discharge on the packs.
Would you not see the same increase in voltage if you just flew the packs normally? I guess I do not see how taking it easy for the first ten flights will help this increase in capacity that you are seeing? Have you taken a new pack and just let it rip from the get go to see if you get the same amount of voltage increase?

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01-13-2009 02:05 AM  9 years agoPost 23
bigdipper

rrApprentice

Wolcott, Colorado

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uhuh
I agree with ckoelliker.
Some people just like to 'Tweak' and write stuff down. Which is cool. You bought the machine to fly. You will eventually realize your machine is running low on power .....so land and charge.
If you fly enough you'll know your machine. Everyone flys different and will draw different amounts of power just from their flying style.

I fly until it get's 'wimpy'. I land ...feel the motor...feel the pack. Ive gotten to the point where I know how it's responding to my flying style and for how long I can fly.
When I first started out I wrote down everything. Amp draw for an alotted amount of time, how hot the motor was with a heat gun, how lose the belt was, ........anal stuff.
Now I just fly until it gets wimpy.....then land and charge. Simple

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01-13-2009 02:25 AM  9 years agoPost 24
caseyjholmes

rrElite Veteran

Portland, Oregon

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The point I was making was that the pack is not at full capacity within the first few charges. I don't know weather or not you have to take it easy on the battery at first, but I'd rather wait to use the lipos at their full potential when I get to doing 3D with them, and break them in.

And while I may write everything down about my lipos..
It can help to make them last longer and even increase resale value if you have a graph of exactly everything the battery did.

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01-13-2009 02:35 AM  9 years agoPost 25
ckoelliker

rrElite Veteran

St. Simons, GA

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I was just wondering if you tried it on a battery that you did not take it easy on for the first ten flights to see if it did the same thing.

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01-13-2009 03:06 AM  9 years agoPost 26
chopper_crazy

rrElite Veteran

Delphos, Ohio

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There seems to be so many different opinions on break in procedures and they are different on each manufacturer. I personally have not done much break in procedures on mine. I normally hover each pack for the first couple of cycles and then not worry about it. I always follow the 80% discharge rule and always charge at 1C. I have never had any problems with any of packs no matter what manufacturer they are (knock on wood)

It's a complex, costly, glow powered anti-gravity machine!

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01-13-2009 03:25 AM  9 years agoPost 27
rexxigpilot

rrProfessor

Florida

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caseyjholmes,

I have never had a lipo pack that did not accept a full charge (4.20-4.21 volts/cell) the first time charged, and I've had over 40 packs in the past few years. Are your packs out of balance initially? Maybe the Blicky is not working properly. Something strange is going on with your packs.

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01-13-2009 03:32 AM  9 years agoPost 28
FlaG8r

rrElite Veteran

Florida

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I agree, mine charge to full capacity from the first charge.

Life is tough, it's tougher if you're stupid

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01-13-2009 03:33 AM  9 years agoPost 29
caseyjholmes

rrElite Veteran

Portland, Oregon

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I have flown other batteries full blast without breaking them in before but it was a while back so I don't recall the results or numbers. I was never quite as attentive to my packs as I am now. Used to just throw them on the 1010 and let er rip.
I suppose that's the good side of having a low end charger. Makes you have to pay attention to numbers of what your packs are doing.

I figure it's better to be safe than end up buying a new pack, so I take it easy on them. If there is the slightest chance it gives the packs more life or more power for longer than it's worth it to me.
The specific manufacturer of batteries I use and have been using has recommended break in for quite a while now. Just following along.

Nothing wrong with the batteries. They have 3 cycles on them. The blinky balances them out quickly no problems.
Might be my charger, but that's what they charge to when measuring the pack disconnected from the charger.

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01-13-2009 01:42 PM  9 years agoPost 30
ajnstajn

rrApprentice

Slovenia, EU

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Interesting...

I've broken in four FP evo lites so far and my charger charged all of them to 12.6V on the first one or two charges and then never again. Now, about 50 cycles later, my packs always get charged to around 12.4V. I guess if i'd tried to charge them again, it would go a bit more in them, but in my opinion it's a waste of time to do that every time. Another thing is that i've always treated my packs like it has to be but still, now that they have about 50 cycles on them, i can hear how my headspeed is lower compared to a fresh pack and also the climbout rate with my 450 is horrible imho. I'm going to try some Rhino packs in spring, i hope they'll remain strong longer than these FPs.

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01-13-2009 03:13 PM  9 years agoPost 31
TomRex

rrElite Veteran

West Palm Beach Join Date: 12-28-2005

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My vote is for some sort of breakin procedure. Ever think you know better and go fly a new pack with no breakin? Do a couple of punchouts, now take the batt you did some breakin on and do the same and tell us what you found.
As far as my breakin procedure goes now, I charge a new pack and run it in on the ground with negative pitch for 4 to 5 min at half throttle for three cycles @ 1c charge. Now when I go to fly them they have full potential, no sag, no wimpyness. My last batch of FP Evo batts lasted for two and a half years, 250-300 cycles before any sag developed. Outrage is the shiz now!

Ignorance is the absence of facts.Stupid is lacking the intellectual capacity to comprehend the fact

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01-13-2009 08:00 PM  9 years agoPost 32
DWS6

rrKey Veteran

Newark,DE

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I think what we are seeing caseyjholmes is that the charger is putting in faster the the blinky can take out and the cells are out of balance and by the time the blinky has them all done you are around 12.3 volts. as the capacity increases slightly in the pack you are gaining a couple hundreds of a volt. I think some chargers charge through the balance taps and charge the cells independently vs chargers like my Hyperion Duo that will balance each cell independent from one another as it charges but also pauses the charge cycle periodically to check the status of the cells. in other words, there is comunications between the balancer and the charger and the result is a much better charge cycle. cells are always 4.2v and within .002 volts of each other.

Dave Williams
Team Align

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