ManCaveMods - VW amd VV Wood Mods

[THnCS]

I have the Sony 30a vtc4 2100mah. I usually do a 1.4--2.0 ohm coil. I didn't use it at 30w often, but generally could only do that on fresh batteries down to about half full. Anything below half, then I would have to lower the wattage used. I have settled in around 18.5-- 23w and it fires all the time, throughout the battery life, until it is finally drained.

I had the same results with the MCM and the Hana V3, I think it has to do with the protection built into the DNA chips, and the performance of the batteries themselves. I used some 10a Panasonics, and I could not fire over 20-23 watts with the 1.4ohm coil.

From all the posts on ECF that I researched, the two best batteries for the DNA chips are the Sony 30a and the LG 30a batteries. I have not used the LG's, but the Sony's are great!!. I remember seeing Mamu did a battery comparison, with volt loss and a whole lot of other stuff I didn't understand

 

[SavageClouds]

Just tried a brand new sony 30a same problem. Beginning to think there is an issue in the mod somewhere


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[SavageClouds]

Battery was at 4.01v btw


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[SavageClouds]

Even at 17 watts I'm getting resets


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[SavageClouds]

15 watts seems to be the only wattage I can consistently fire


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[matador]

SavageClouds, Im not sure what could cause that to happen. I will get ahold of Brandon at evolv and see if he has any ideas. I will let you know.

 

[SavageClouds]

I've been talking to many and a couple of other DNA builders they believe that the battery contacts are the culprit


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[SavageClouds]

So per suggestions from a fellow member I took 2 pennies. Placed one at the spring and one at the positive contact insterted the battery and am firing on 30 watts continuously no problem. Obviously this is not a completley pratical solution.... So matt pm me me when you see this

 

[matador]

A message to all MCM owners

As you can see the messages above, there has been issues with some of my recent mods. A few mods in the most recent batches are using different battery contacts than I normally use. If any of you are experiencing the same problems outlined in the above messages, please PM me. I am going to do a little more research and testing several different battery contacts to confirm exactly where this problem lies. If you have recently bought a mod from me that has these problems I will fix it for you free of charge. I am ashamed that I have to put out a recall, but I do not want to sell a faulty product. I will do everything I can to correct this issue. Thanks everyone for understanding.

 

[SavageClouds]

^ this is a man who takes pride in his work.. Great respect and appreciation


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[itsrayray]

How recent of batches?

 

[matador]

How recent of batches?

Im not sure when I started using this new spring. I think only a few mods in each of the last two to three batches may have these springs in them. Are you having problems hitting 30watts with your mod?

 

[SavageClouds]

Rayray you will know if you have the contacts in question. Firing issues anything like that would be a good sign


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[itsrayray]

Im not sure when I started using this new spring. I think only a few mods in each of the last two to three batches may have these springs in them. Are you having problems hitting 30watts with your mod?

Well I have #134, what we at? #140?

 

[SavageClouds]

Yeah I have #140 believe it was the last sold


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[mwdenko]

Well that explains it. I thought I wa s crazy. I really wasn't liking to DNA I figured it wasn't as good as everyone was talking about...

 

[TS12000]

I don't know if its related but I had some reset/batt level issues because of the clearance between battery and door. The battery would jump around off the contact in that little void. Easily solved with a small piece of felt or double sided tape on the door. Don't know about the dna30 issues but might help people having resets or seemingly short battery lives. Holds the battery snug in place and haven't had one recurrance since.

 

[MamaTried]

is this only a 30 problem, not DNA20?

 

[matador]

is this only a 30 problem, not DNA20?

I believe there may be a few DNA20 ManCaveMods that have the faulty contacts in them as well. If you haven't noticed any problems then you are ok.

 

[tvBilly]

is this only a 30 problem, not DNA20?

It sounds like a less-than-perfect-contact problem, not a DNA anything problem.

When you're supplying upwards of 4.5 Amps (with a 1.5Ω load; 5.5 Amps if it's a 1.0Ω load), even a tiny resistance in a contact point can turn out to cause a significant voltage drop. Moreover, the tiny resistance is likely to vary as the contact point heats up (from voltage drop across it), and the DNA series checks for things like this many times a second. When it sees a problem, it shuts down. That's a good thing.

A less-than-perfect contact point (or points) is less likely to show up (or be a problem) in the 15 to 20 watt range. (Where the 1.5Ω load will be drawing in the 3.0 to 3.5 Amp range).

I'm sure Matador will track this down, now that he is aware of it, and will tell us all the story (and fix anything that needs fixing).