Quick Tip: eGrip RBA Chimney Wrap

eGrip users: read this now and believe it later!



the wire does not have to be twisted. Just being fancy. The takeaway is the shape of the legs. Pre shape them this way for easy attachment to base.



either remove the coil from your jig / needle / whatever, thread through RBA base and reattach or just wrap the coil with the jig / neeedle / whatever already threaded. Note: make sure not to make your coil this tall, keep in mind the headroom you will have with the chimney top screwed down. Not pictured is the coil minus a few wraps that will fit without touching the metallic top.



be sure to stuff wick material into the base before doing the wrap around. If you just wrap around, juice will drip below the wrap and cause gurgle / leaking. Also, should be obvious but dont just wrap as pictured. The bottom edge of your wick strip needs to be tucked into the RBA base, between the deck and the outer cylindrical wall.



if you do not line up your wick so that it looks like this when the top chimney is screwed on, trim the material off or just stuff a small amount on top until it looks like this. You might have to do a little trial and error until you find the right level of density of packed wick. It will be different depending on your material (cotton vs rayon, etc). Currently enjoying cotton because the wick in this build needs to be somewhat absorbent because its role is not just to supply juice to the coil. It also serves as a method to prevent juice from pouring down the middle - keep this in mind!

When all done, you can hold the eGrip up to the light and see clear through the device from the bottom and up through the drip tip. The path is totally open providing excellent air flow. Using cotton and pre packing the base ensures not a drop of errant juice goes anywhere but into vapor.

If this does not produce a wicked awesome vape with superior airflow and no leaking - post a reply or pm a question. The 2 eGrips currently in rotation with this build are both running best yet with no issues with over a week of consistent use on each.

Vote Quimby!

 

Been meaning to try a chimney in the Delta II for a while. #Inspiration

 

Would love to try this on my egrip. Thanks!

 

no problem, @Iwan Dzyrul Zefrey .

Should update this by explaining that the method has since been changed.

now instead of wrapping the coil around with cotton and then assembling the chimney (or however you can call it - in other words, screwing on the metal cylinder). Experience has shown that it is easier to build with the same result if you would wrap the coil very thin (maybe once or twice tops), then screw on the cylinder. At this point you will see there is a lot of space between the coil / thin cotton wrap and the outer perimeter. Next take your cotton and tear off little tiny pieces and lightly ball them up between your thumb and forefinger. Proceed to fill the gaps by packing the cotton in (not too tight / not too light) with a thin utensil like a micro flat head screwdriver. Think of it like filling a box with styrofoam packing material, those little "s" shaped kind. Be sure to fill the spaces way down and on the sides your main concern is still trapping juice as it enters the holes. You do not want it to come in and not meet with cotton right away nor not have enough cotton underneath to absorb everything.

The reason for the change is the amount of cotton required to prevent leaks when entirely wrapped around the coil is too much to easily get the cylinder over it all and screwed down. It is not impossible but can be a chore as well as distort and / or displace your coil in the process.

This modified method gives the advantage of the vertical coil with unrestricted air flow, solves leaking issues (you may have to experiment with the quantity and density of the cotton packed in) AND is much easier to do.

Give it a whirl.

 

Wow! Thanks for the tips!

Hmm. Need to be extra careful if want to pack the cotton like that. If too tight it will cause dry hit.

Just want to ask, what size for the wire and the diameter of the coil? Might going for 30g and 1.5mm diameter.

 

@RICK O'Shea would like to see a couple of pics of that Delta vertical coil if you put it together.

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@Iwan Dzyrul Zefrey - - It is possible to pack the cotton too tight. You would probably never get a dry hit though. Upon the first draw, you can tell it is too tight right away because the air flow is too restricted. So immediately double back and try again... it is not too tricky. Just fill the space as complete as possible without having to compress any of the cotton beyond its natural resting point. A loose, but complete fill. Imagine the juice coming in and the cotton absorbing it. As it absorbs it will need to expand slightly. So loose enough to absorb and expand but not too loose to allow the juice to pass through. At the other extreme, too tight and there is no absorption (or limited at least) possibly because there is no expansion, there is no absorption (just a guess but sounds plausible).

@haybilly - - Was not aware that you now represented the interests of @Rick O-Shea . Please pass on the warmest regards along with these photos, made after disassembling a perfectly good build for the sole purpose of catering to his request. Do not know why there is such generosity abounds this morning...


the coil was wrapped a while ago. Just now fished out of the device, gooey cotton removed and a quick torch applied. Therefore not "april fresh". Cannot recall for certain and do not care to give more than a guess - but it is a good guess that this is 27 gauge kanthal. It is wrapped 10 times @ 2mm.

Example of cotton prepared from the common pad variety. This particular cotton was sourced from one of many lovely 7-11 convenience styled stores frequently found every 22-24 meters in any given direction when walking from any fixed point within the Bangkok city limits. The brand is believed to be "Just a Cotton Pickin' Minute" or "Bleeder's Choice". Confirmation neither needed nor possible. Move along.

A loose wrap around the coil (including the posts - no need to get retarded about it and try and thread the cotton between the coil and posts, unless that's your thing - then knock yourself out). Approximately 2 times around. Yes, there is a bit of schmutz present on the top of the cotton to the right of the metal rod that is passed through the entire RBA head and continues up through the vertical coil. This rod lends support to the coil as wick is installed. Schmutz promptly removed upon discovery. Too angered by so much free labor donated already by this point, a new photo was not taken.

Metal sleeve installed. Schmutz removed as is evidenced herein.

Cotton balled up into funny shapes like "circular", "s" and "sausage". Top of RBA assembly pictured to demonstrate relative size. The shapes and sizes of the cotton scraps are mostly not crucial. As long as you can fill the space without compacting the material too much - that is all you need to do. However you arrive at that, up to you.

Fill er up. Don't pack er down too tight... just right.

Almost there. One ball protrudes for illustration purposes. Conduct the errant ball to a state of most proper conformity.

Saturate the wick with some juice prior to RBA head assembly is finalized with the screwing on of the top cap. Finally, here it comes. Wait for it,... wait for it,... Insertion. Yes. Yes. oh G-d, yes. That is it. Ooh. ooh. ooooh. Done. And Yes, the oring is frayed. Whoopty doo. Do you need some cab fare or something? Fine, close the door on your way out. zzzzzzzzzzzz zzzzzzzzzzzzzzzzz zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz.

 

One thing to remember with chimney coils like this is that the inner diameter of your coil can decide your airflow. You'll want to match your incoming airflow size to keep from tightening your draw.

 

2mm works better than bad from over here. But then again, that is with this robo-diaphragm installed - how that'd would work for anyone else is unknown.

 

My experience with chimney coils has been with the kfl. I had a heck of a time perfecting it with too tight of a draw, dry hits, dry hits with flooding at the same time and a nasty leak from the airflow. It was tough making a consistent build that didn't do one of those things. I had a couple good ones but finally went back to my normal build. My hats off to you for sticking it out and finding one that works.

 

Many thanks Darth-very interesting.
Actually, I was saying 'to' Rick that I would be interested in seeing some pictures of the Delta chimney build, in/when he got it together; I wasn't being the messenger boy, informing yourself of his request, I can see how it might have come across like that, though.

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D'oh!

Must be getting a case of late onset galactic villain dyslexia or something. Earlier today upon introduction to a new contact on a different on line venue, a big guffaw was made over the person's user name being so funny. As it turns out that the 'kingofarts' is not the King-o-Farts. Strangely, the (clearly superior) wrong reading of the username just leapt right off the screen and afterwards the notion that there could possibly be any other intended handle besides the one proclaiming dominion over all forms of trans anal effluvium just never even registered as having even the most remote chance of being true. Unfortunately, "his majesty" is also a sufferer of a severe lack of a sense of humor... Oi. It is too hot today...