Introducing... my bottom feeding mod (MyMod)

[Train2]

I think you're thinking what I was thinking - at least in general.
SOME way to
a) have a big solid connection point
b) put spring pressure on the battery

Seems like there's room for something. I mean, I was picturing whether a bit of "springy" conductive leaf, held by the existing contact screw might do it...

Just a thought... For the negative contact plate .... what would you 2 that are paying attention think about making a second exact plate, silver plated sandwiched between springs that rest in delrin holes (the springs would be non conductive right? ) like the existing negative plate. Soooo..... the top plate would be angled as a ramp to slide the battery in under the tension of the springs in the middle?? The springs wouldn't matter right, if they aren't conductive? And we'd still be able to use use the fuse with the second plate? I wish I was mechanically inclined.... to mill these parts.

Oh - and FYI - I guess it's just me, but I really did try, and really can not get a new insulator in. I swear I tried your way, and other ways, etc. I finally just swapped out for the other 510, which had an insulator in it, just so I could use the mod a little...

 

[B2L]

@Yiorgo not posting doesn't (necessarily) imply not paying attention

 

[classwife]

@Yiorgo not posting doesn't (necessarily) imply not paying attention

Yep

 

[ST Dog]

Just a thought...

Sounds overly complicated.

Simplicity is best for things like this.

I was picturing whether a bit of "springy" conductive leaf, held by the existing contact screw might do it...

My thoughts too.

Finding the right material is key. Strong enough to support the battery long term but low electrical resistance.

 

[B2L]

Sounds overly complicated.

Simplicity is best for things like this.




My thoughts too.

Finding the right material is key. Strong enough to support the battery long term but low electrical resistance.

I agree that would be the best approach, other than a centered brass screw which I would prefer. Berryllium copper would be ideal.

 

[ST Dog]

I agree that would be the best approach, other than a centered brass screw which I would prefer. Berryllium copper would be ideal.

For sure, a more solid mount has benefits.
But hard to fit such into what we have now.

And many like the ease of battery changes a spring give.

Even a strip of copper with a spring soldered to it would work.

 

[beckdg]

Yep

Uhuh.

Though I do get to lagging behind.

Tapatyped

 

[rudedog]

with the brass screw for the battery fix,my mod hits like a train!

 

[element77]

How bout some pics rudedog....

 

[ST Dog]

@rudedog where did you find the brass screw?


Did you by chance measure the voltages to see how much it improved?

 

[paulw2014]

I spent the past week on the new mod. This is something that I've been designing in parallel for quite some time, but the FDA deadline really forced me to get it made without further delay. But I'm happy it's being made and I will have it before 8/8.

Someone sent me some PEEK insulators they've been using and I'll check it out this weekend. I'll also look into fixing the negative contact issue. You guys already use a screw in that extra screw hole. I think we can place some nuts there as well and place some kind of springy thing in between the nuts and the screw. This will give the screw something to tighten on as well.

 

[rudedog]

How bout some pics rudedog....

LMK if thats what ya was wantin to see,its one of the dcrews out of a replacement 510 i got from FDV and just filed a few grooves in it to be able to tighten up the battery.has been working great ever since i put it in there.

 

[rudedog]

@rudedog where did you find the brass screw?


Did you by chance measure the voltages to see how much it improved?

no i havent,didnt pass the elctricity stuff in school,but i did stay at a holiday in 1 time...lol.hits like a train ...still.if ya go to FDV site he has replacement 510's for tube mods and i had a few of them layin around.have a few left if ya want one LMK

 

[paulw2014]

Holes or slots?
Here's one that's got a slot over holes, lol.
Each of these holes is 2.5mm, and there's people running it with six open holes then...
I don't think you could put one gigantic hole, or juice would just pour out. But at least this gives an IDEA of airflow people might want. There's some airier than this, too...but not a LOT.

When it comes to air flow, do you think there is a wide range of preferences or is it more polarized? For example, you might have a lot of people who prefer a very airy draw (all three holes) , and you might have some people who prefer a tight draw (one hole or less), but very few in between. Or is it all over the place across the spectrum?

 

[beckdg]

I spent the past week on the new mod. This is something that I've been designing in parallel for quite some time, but the FDA deadline really forced me to get it made without further delay. But I'm happy it's being made and I will have it before 8/8.

Someone sent me some PEEK insulators they've been using and I'll check it out this weekend. I'll also look into fixing the negative contact issue. You guys already use a screw in that extra screw hole. I think we can place some nuts there as well and place some kind of springy thing in between the nuts and the screw. This will give the screw something to tighten on as well.

I'll take one of those insulators.

Dunno if I'll need it.

But!

Since the move we haven't been getting around to things on the old to do list.

Wife just put the MyMod into rotation today.

Probably won't be moving the atty for months, either.

Tapatyped

 

[Train2]

I think you've got it right - there's two groups (at least).
And if we look around, there tend to be atties that "win" for one or the other but not usually both - but STILL, it needs adjustability.

You've got your "less air" category -

• Often "MTL" (mouth to lung)
• Likely "flavor chasers"
• Often go for smaller diameter atties - for the smaller chamber that usually increases flavor rather than cloud
• May be single-coil users

And your "more air category -

• Broader range here - this should go from "restricted lung hit" all the way to "feels just like breathing" airy - if you want everyone to like it
• Some still want flavor over vapor volume - many want both available depending on their setup

Some of the "big hit" atomizers were kind of in the middle (NarDa). Some of the big hit atomizers, it seemed like it was because it was the first one that got some aspect of airflow or flavor/cloud ratio "right" (like when the Derringer was new - or the Stumpy).

When it comes to air flow, do you think there is a wide range of preferences or is it more polarized? For example, you might have a lot of people who prefer a very airy draw (all three holes) , and you might have some people who prefer a tight draw (one hole or less), but very few in between. Or is it all over the place across the spectrum?

 

[ST Dog]

So, a kind soul provided me a brass screw (and a nut to keep it all tight )

So some testing is in order...
Measured battery terminal voltage (while firing) and voltage across coil.
(Still using plated strap/switch)

0.20 Ohm Ti coil:
SS-3.86 3.20 -> 0.66
brass- 3.86 3.33 -> 0.53

1.66 Ohm Kanthal:
SS- 4.05 3.77 -> 0.28
brass- 4.03 3.68 -> 0.35

Soon the lower resistance coil the brass gives a bit of improvement.
55.4W vs 51, so a few extra W to the coil. 16.65A v/s 16A, and less power wasted (8.8W vs 10.5W).

8.16 vs 8.56 on the higher resistance, but I can't figure out why the Vdrop increased there. I'll probably try again later.

 

[ST Dog]

So, for the more experienced BF folk.

What bottles/caps will fit this mod?
I need to order a few spares before I head to Afghanistan.

@paulw2014 what bottle/cap shipped with the mod? When can I get more of them?

 

[Train2]

Not sure if there's other sources, but that's the same bottle as the Reo Grand - replacements here for $0.65. If you look through accessories, you can find it with a tube, or get extra o-rings for inside the cap, etc. (it's the items named "6 ml bottle...")

 

[ST Dog]

(it's the items named "6 ml bottle...")

I though this was supposed to have a 10mL bottle ?