|Feb 19, 2014, 06:14 PM|
United States, KY, Louisville
Joined Sep 2013
For what its worth, I can't stand a puffy lipo.
Always put mine away at 50%. You know this is getting to be an all day sport the more I get into it.
Like racing the car at the drag strip. Started out just driving to the track
|Feb 20, 2014, 03:12 PM|
Storage charge saves a lot of issues for sure
Can anybody give their input on the CG question I asked in below thread please
|Feb 20, 2014, 03:16 PM|
I have heard of some having problems with the Nano Tech,s
I used larger ones in my Trex 550s and 600s and never had an issue and had countless numbers of cycles
I never leave any battery charged over night even , and use a icharger 308 DUO and always check balance of cells and also always balance charge
I hope they do not fail me , I just got them out of the mail box today, balance seems good across the cells on the few I checked
My issue is with CG, with the standard eflight battery that weighs 10oz I had to cut foam back to get the CG correct ?
The nano Techs weight 2 oz more, and I guess I will have to add a little weight to the tail, as I can't move battery back any further, I will add 2 oz lead to the eflight to make it match the new ones so they always mount in the same place
So my main question now, is has anybody else had a CG issue with the stock battery
Info would be much appreciated
|Feb 20, 2014, 04:46 PM|
Gold Coast Coolangata, Australia
Joined Nov 2003
I bought the pnp version so never have used the stock packs. I have always used hk turnigy blue 4s3000 30c packs and these have worked great for many (~50 each) cycles. They weigh ~350g (~12 oz) so are probably ~ the same as your nanotechs.
For me, these cg'd fine moved all the way back in the battery area.
I would not get too anal about getting the cg to the exact dist from front root as per the manual. Just get it in the right ballpark, then test in flight running 75% throttle lines, level and inverted. I started out probably a bit nose heavy with these packs in the middle of the battery area.
After moving the packs back I could hold level inverted with very slight down-stick. It also was very stable in a hover. After that I never have had to worry about cg, nor did I ever go back and re-measure it.
The point I'm trying to make is that cg might be kinda personal and you really need to test fly it and adjust it accordingly. If you need to remove more foam to get the battery back further, just do so, since this is far better than adding more weight. If you are using diff packs then just mark a line in the box to it's correct position. Adding weight to lighter packs just so it can use the exact same position in the bat box does not make a lot of sense to me.
|Feb 20, 2014, 06:15 PM|
Thank you much
With the stock battery I took soldering iron and cut back about an inch, at that point the cg is about 1 cm off
With the 12oz batteries it will be further off and I can't move them back any further
I was not thinking about just putting it further forward, which will equal out the difference,
I will put the new batteries in it now and measure the cg with them and post the new difference
About 1/3 cm nose heavy
Better that than tail heavy
Thanks for the input
Now time to maiden this sucker this weekend !!!
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