lipo vs. nano-tech

[stelerzman]

Soft pack is the way to go, hard pack is know to have issue---heat build up and moisture trapped---just to mention a few.
I have never used Nano-tech. Some people really like them, some don't.
How long are you running your boat? What is the temp reading on your batteries after you bring her in? Actually what is the temp on the motor and ESC?

Thanks for advice on the soft packs.

Nano-tech is just a brand name...They are Lipos....

Thanks, I didn't know that until now

So what did voltmeter show ?

The bad battery showed 4.88 and 1.20v's the good one showed 4.15v on both cells. On the packs I ran yesterday read out at 3.98v per cell for both batteries, they haven't been charged yet. I ran the boat 3 times on the same two batteries, the first two times I couldn't get her on plane. That's when I went with the hand launch and got her running good.

Posted by lenny.

Yes the nano-tech work good for me,
I use the cheap 30c / 40c blue turnigy in all of my boats with no problems as long as you do not over run them down to low.
I guess the hard case packs hold in the heat and keeps them from cooling down.
Can you post some pictures of the boat setup and video's of your boat running ?
Yes, I'll post some pic's shortly and I'm working on video now.
[/QUOTE]Also what prop is on it ?[/QUOTE]
I'm running the stock prop for now, that is until I can figure out what I did the GR 40X57 I tried to balance and sharpen. No matter what I did I couldn't get her up on plane.

[stelerzman]

Here's my setup.
20131002_163606.jpg

[lenny]

Ok,
I do not have this boat,
But I would set the strut level and move it up as high as it will go and just use the stock prop for now.
Also your cells should be on each side of the hull for better CG placement and that should help get it up on plane,
As it is now all the weight is at the bow and is making it run wet,
And also run hot to because it is not running on plane.

[stelerzman]

I just had the same thought on running the batteries in the standard configuration. Here is were my strut is set.
20130919_170747.jpg

It was running pretty good until I installed the batteries sideways. Thanks for the confermation.

[lenny]

Try running it like that for a minute or two and check temps on everything,
You may need to move the cells back 1/2" or so toward the transom for a better CG and for it to plane out faster.
Also if it was my boat I would be using 5.5 bullets on the whole setup.
I think they make everything work a lot better.
And get some video's if you can,
It helps like the pictures do.
So we can see what is going on with a boat and see how it is riding to.

[stelerzman]

Lenny, this is the best video I have at the moment.

http://m.youtube.com/watch?v=hBvP4m6zme8

[kevinpratt823]

I believe Nano Tech is not just a brand name, but a description of a process or something about a specific type of lipo. The Dinogy packs say Nano Tech on them also, and I have seen other packs described as using "Nano Technology" as well, it very well may be just a marketing thing, but certainly not limited to the Turnigy packs we most associate it with. .

[stelerzman]

Nice observation, thank you for your input.

[lenny]

Ok that is a good video,

Of how not to run a ul-1 Hydro.

That Hydro likes to run clockwise or just straight.
Also on some Hydro's you need to pop the bow up by hitting the throttle once to make it dive,
And than hit the throttle again and hold it there as soon as it pops the bow back up.
In order for it to get it up on plane and stay there.
That pond may be a little small to run that ul-1 in.
Because you need to stay just about at full throttle when running it on plane in a big oval like a stock car,
Or it will come off plane and than start to heating things up because of all the drag of the water on the hull.
It just takes time to learn how different they are than V hulls and Cat hulls.

Lenny, this is the best video I have at the moment.

http://m.youtube.com/watch?v=hBvP4m6zme8

[stelerzman]

In case you missed it, this is the 3rd time it's been in the water and my first time owning a boat.
I'm still tuning the boat and learning about this hobby. I've had more success with a hand launch and will stick with it.

[lenny]

Ok,
I was just trying to help save you from burning things up.
When it is running wet and plowing the water like in the video,
The amps draw will go up and pull very high on the cells and the setup and that turns into heat.
Also it is a little hard to hand launch the boat when it come off plane in the middle of the lake,
So that is why the pop it up and get on plane is a good thing to know for some Hydro's

[stelerzman]

Thank you, I'll got back and play with battery placement, what are your thoughts on cutting a hole to put the batteries in the sponsons?

[MarkF]

Here is a little heads up on car packs. Car packs have to be made smaller to fit the cars better. That means the formula in car packs is not the same as the regular packs. Car packs need to survive short burst so the formula is not as rugged. I don't recomend you buy car packs for your boats. They might work in a mild set up but will eventually fail in a higher amp set up.

Mark

[Matias777]

Hi Stelerzman let me star by telling you soft packs are the most suited for boats.The best lipo I have used in my boats to my own surprise are zippys 45c they have out perform in all areas my thunderpower 65-130c nanotech 65-130c polyquest 45c and turnigy 40c.

All the packs I mention where 4s 5000mah, I cycle them 5 times before I run them, use a lipo warmer in cooler months as you should, and lipo cut off at 3.2 v.
My Tp dropped a cell and fail after 3 months of racing + bashing I was disappointed and short in cash after spending $179 for the battery so went and bought the zippy for $60 with low expectations, man was I wrong the boat had more power and top end speed than ever but I thought it wouldn't last long wrong again a year later still going strong, I thought maybe I got lucky with that pack so I got a second one, it was no different just as good that's all I use this days mind you I have a rigger with a Tp power 4092 2600 kV motor I push them hard.