Cardboard/fiberglass/carbon fiber DNA 6000mAh

[BJ43]

I have posted this in other threads but figured it may be handy to some that have RC experience and modeling with resin and fiberglass.

This is a cardboard box cut to fit the DNA20 and a 6000 mAh lipo hard pack.

Cardboard box.





With battery.



Front


Resin and thin fiberglass cloth

 

[BJ43]

Box with two layers of cloth and resin.



Carbon fiber



Inside



Finished

 

[Cyrus Vap]

wow man amazing work! how's it feel in the hand?

 

[BJ43]

wow man amazing work! how's it feel in the hand?

Much better than the big aluminum box. Tape was holding back until I got some small screws..

 

[brandall937]

I have a quick question on the battery Did you simply fill the connector with solder and the wires or was there something else going on?

 

[BJ43]

I have a quick question on the battery Did you simply fill the connector with solder and the wires or was there something else going on?

I just cut the heavy wire off the connectors and soldered 20g wire to them. I can unplug the battery if I want to change it without having to desolder anything.

 

[brandall937]

Thats genius ....thanks Ill be doing the same...

 

[brian2778]

That's awesome. My only question is what will that battery handle? I looked at Hobby King and they rate it at 1.2 ohms on the low...does that mean that's as low as you can take an atty?

 

[bapgood]

That is a 65-130 c-rated battery so it can handle 780 amps burst or 390 amps continuous. It has the lowest internal resistance of any battery I have tested. I'm not sure where you got the 1.2 ohms from unless it's actually milliohms, on my cheapo meter it tested between 6mΩ and 1mΩ or 0.006Ω and 0.001Ω. Ohm listings on a battery usually indicate the batteries internal resistance and has nothing to with an atomizer.

 

[BJ43]

Two boxes ready for my old fashion 3D printing... One for a smaller Raptor 20 amp build to replace the large aluminum box and the second for another Raptor with a 5000 mAh. May try other RC finishes on one, instead of carbon fiber....

 

[bapgood]

BJ here is some switch trickery I did with the CF

I got some light touch thin tact switches a while back thinking to use them in a pipe build for a lip activated switch. Then I got playing around with an old MVP case, dna, and some 3M Carbon Fiber Di-Noc sheet.

I have too many projects going on right now and I can't find a battery solution that I like so I have put this project on the back burner for now, but I wanted to show what I think actually turned out and works pretty dang good.

Here is the tact switch I used - EVQ-Q2B01W Panasonic | Mouser

Here is where I got the 3M Carbon Fiber Di-Noc - Chrome, Stainless items in Pillar Covers store on eBay!



I epoxied the tact switches in cutouts in the MVP case so the top square portion of the switch was even with the outside of the case, and the little rubber activator nub stuck out proud just a hair.





Then I cover it with the 3M Carbon Fiber Di-Noc.....and magically the switches are gone. You can just barely feel the nubs with your fingers, and can typically find them without activating the switch.





Here it is in action

 

[Phone Guy]

That's awesome. What's your invested cost minus the dna20 chip?

 

[Inline6power]

Would you make me a carbon fiber dripper cap ? I would pay you of course but I really want a carbon cap for my tugboat atty

Sent from my SM-N900V using Tapatalk

 

[BJ43]

That's awesome. What's your invested cost minus the dna20 chip?

Hard to calculate.

The Box with resin, fiberglass, and CF about $4, mostly carbon fiber.
510 connecter and battery charger $2. Bought in quantities from FT and ebay.
Switches $4
Screen frame $3.50
Battery depends how many mAh and C rating $15 to $30

 

[BJ43]

The beginning of a new cardboard/fiberglass box for a raptor 20 amp. This will have two 5000mAh packs in series. Only one pack in this pic as the second is on its way.



Two of these:

 

[BJ43]

Didn't like the 510 sticking out. Found these 3/8 SS countersink washers. Not as sexy as mamu's but looks good to me.

 

[derogg]

How long will that monster battery last between recharging?

 

[BJ43]

How long will that monster battery last between recharging?

With a 1.5 ohm at 17.5 watts it is lasting me about 22 hours. I now charge it every other night....

 

[BJ43]

My DNA was not reading the ohms. It was stuck on .1ohm no matter what RBA I put on it. So I needed to do a hard restart on the chip. Remove battery. Unplugged pos for a few minutes and now alls well again. 1.4ohms on this Kayfun.

 

[BJ43]

New Raptor ready to go in my next cardboard box...