A Month with a Brunhilde MTL

Kalyptic

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  • Jul 22, 2023
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    My Big Bad Brunhilde is still dual coil. You can't make the original dual coil Brunhilde into a single coil without significantly losing flavour.
    You need to completely block off one whole side of the airflow which comes from out of the post in the deck and there's about 12 tiny holes to block off.
    If you want a single coil Brunhilde that can handle a bit of wattage then you want the Brunhilde 103. That's a dual coil and a single coil in one, it has the same flavour as the other Brunhilde's too. Great!!
    Yep I tried a single coil in it, used cork from an old wine bottle to block off the steel cable holes and electrical tape to block of one side of the airflow, flavor was very muted. In the end I dropped in two tiny 2mm ID 1.2ohm coils and converted it to MTL with both side airflow closed off and attached a 510 mtl drip tip. And the thing sips juice now, I get avg 1000 puffs per tank, was averaging around 400puffs before. Its a great tank to experiment with. Next i'm going eight 2mm coils, 4 on both sides since I never get to use it with full airflow open XD
    IMG_20230904_120146.jpg
     

    Falconeer

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    Another month’s gone by with the Brunhildes as my daily drivers and I’ve found out a few more things.

    Firstly, if you have a recliner chair and doze off in it occasionally - it isn’t the best idea to leave your device in the arm of it, where it can slip down into the mechanism, as if you haven’t noticed it and put the said recliner into the upright position you just might chop the nice longer resin mouthpiece in half.

    Having done just that, I fitted the shorter mouthpiece and to my surprise found if I closed the top airhole a bit, it actually offered a very nice vape - so much so that I fitted the shorter one on both Brunhildes. ( my coils are now reading 0.95 ohms and I’m vaping 16 strength clear menthol flavoured 60/40 liquid at 13.5 watts. )

    Another member had commented previously that he had to tilt his Brunhilde to keep the wick moist which puzzled me at the time - until I felt my wick seemed to be offering a harsher vape than usual.

    Taking the top cap off I found the wick tails had risen slightly and were not in proper contact with the steel wires - since then each time I have refilled the device I have checked then and settled then back properly using the proverbial Blue Screwdriver.

    It’s now over three weeks since I rewicked and the coil and wick look like they’ll go on for a good bit yet.

    Hope this update is useful!

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    Kalyptic

    Full Member
  • Jul 22, 2023
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    33
    Another month’s gone by with the Brunhildes as my daily drivers and I’ve found out a few more things.

    Firstly, if you have a recliner chair and doze off in it occasionally - it isn’t the best idea to leave your device in the arm of it, where it can slip down into the mechanism, as if you haven’t noticed it and put the said recliner into the upright position you just might chop the nice longer resin mouthpiece in half.

    Having done just that, I fitted the shorter mouthpiece and to my surprise found if I closed the top airhole a bit, it actually offered a very nice vape - so much so that I fitted the shorter one on both Brunhildes. ( my coils are now reading 0.95 ohms and I’m vaping 16 strength clear menthol flavoured 60/40 liquid at 13.5 watts. )

    Another member had commented previously that he had to tilt his Brunhilde to keep the wick moist which puzzled me at the time - until I felt my wick seemed to be offering a harsher vape than usual.

    Taking the top cap off I found the wick tails had risen slightly and were not in proper contact with the steel wires - since then each time I have refilled the device I have checked then and settled then back properly using the proverbial Blue Screwdriver.

    It’s now over three weeks since I rewicked and the coil and wick look like they’ll go on for a good bit yet.

    Hope this update is useful!

    View attachment 1001427View attachment 1001428View attachment 1001429View attachment 1001430
    Awesome timing Falconeer, my Brunhilde MTL came in the mail this morning! Its so tiny next to the original Brunhilde dual coil, it's one good looking tank though.
    Sorry to hear about your drip tip, maybe you can salvage it somehow with some dyi sandpaper if it's cut perfectly in half, you'll have a sawed-off drip tip haha.
    What size airflow piece are you currently running?
    IMG_20230926_103856.jpgIMG_20230926_104407.jpg
     

    Falconeer

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    Awesome timing Falconeer, my Brunhilde MTL came in the mail this morning! Its so tiny next to the original Brunhilde dual coil, it's one good looking tank though.
    Sorry to hear about your drip tip, maybe you can salvage it somehow with some dyi sandpaper if it's cut perfectly in half, you'll have a sawed-off drip tip haha.
    What size airflow piece are you currently running?
    View attachment 1001438View attachment 1001439
    I'm using the second largest insert and controlling it via the top airhole. Sadly the drip tip was caught and was broken ragged - in the UK it isn't the easiest thing to source a replacement but if I wanted to go down the Daniel Forsyth matching route I'd simply get a Zlide drip tip in a colur to match the mod and sand off the end - but to be honest I'm fine with what I'm using just now.
     

    Kalyptic

    Full Member
  • Jul 22, 2023
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    I dual coiled it. Installed two 2mm ID 28awg Ni80 coils, now I can taste all the subtle flavor notes from Juice Head's Blueberry Lemon which I wasn't getting before with the single 2.5mm ID 26awg coil.
    I call it 'Brunhindenburg' just because on the first attempt I ignited the coils on fire when the mod round-robin back to 200 watts while dry firing them. :laugh:
    IMG_20230928_165544.jpgIMG_20230928_165240.jpgIMG_20230929_002912_1 2.jpg
     

    Kalyptic

    Full Member
  • Jul 22, 2023
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    Anyone had problems with the O-rings swelling?
    Was cleaning the Brunhilde out and threw all the parts with o-rings still on in some water that I had boiled (wasn't at the point of boiling while I placed it in the water but very hot) and they all got swollen just slightly to the point the cap can no longer go in flush all the way down.

    Is there a way to shrink them back down to size?
    I'll keep them as spare to use in the future since I replaced them with the spares that was included. I just feel a little uneasy that I no longer have any spare o-rings now in case of something happening.

    And for anyone in the future, Don't Put Your O-Rings In Very Hot Water To Clean!
     
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    UncLeJunkLe

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    Anyone had problems with the O-rings swelling?

    I don't have this RTA but yes I have had black orings swell just by sitting in tap water overnight.

    Is there a way to shrink them back down to size?

    They can shrink a little as they dry but will never be the same. Best to just throw those out. Sorry.

    I just feel a little uneasy that I no longer have any spare o-rings now in case of something happening.

    If you plan on soaking orings in the future (no need to really, just wash them), then try the high temp, food grade red silicone orings instead.

    If you are in the USA...I buy all my vape spare orings at oringsandmore. Absolute better quality than any I've bought from Aliexpress and reasonable prices/shipping.

    Black Buna 70/Nitrile Orings (metric)

    Red Silicone High Temp, Food Grade Orings (metric)
     

    Kalyptic

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  • Jul 22, 2023
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    I don't have this RTA but yes I have had black orings swell just by sitting in tap water overnight.



    They can shrink a little as they dry but will never be the same. Best to just throw those out. Sorry.



    If you plan on soaking orings in the future (no need to really, just wash them), then try the high temp, food grade red silicone orings instead.

    If you are in the USA...I buy all my vape spare orings at oringsandmore. Absolute better quality than any I've bought from Aliexpress and reasonable prices/shipping.

    Black Buna 70/Nitrile Orings (metric)

    Red Silicone High Temp, Food Grade Orings (metric)
    Thanks for all the info and the links, will bookmark them. Never knew they can be that sensitive as I've never had this problem with dual coiler Brunhilde version, that one you can throw off a cliff and all will be fine after
     
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    UncLeJunkLe

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    Thanks for all the info and the links, will bookmark them. Never knew they can be that sensitive as I've never had this problem with dual coiler Brunhilde version, that one you can throw off a cliff and all will be fine after

    These are mainstream, made in china stuff. Never expect high quality parts used even when the overall quality of the end product is excellent. You might not have bloating happen on orings from other products, even the same product from the same company. They use what they can get at that moment .
     

    Falconeer

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    I agree with the previous comments; what I do is leave them in situ, rinse with warm water, dry right away with kitchen roll and then leave the components on a double sheet of kitchen roll for a couple of hours then finally re-lube them with vape liquid. Touch wood, so far this has worked.

    Via Daniel Forsythe I found out about Sourcemore - they had Brunhildes as of yesterday and also spares like mouthpieces - I didn't check for replacement packs of O rings but it might be worth taking a look through their site.
     
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    Falconeer

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    On the question of flavour, as an experiment, I made up a couple of 1.5 ohm coils for my Brunhildes and fitted them yesterday.

    Running them at 10 watts has produced a remarkable increase in flavour as opposed to the previous 0.8 ohm coils running at 14 watts.

    When next I have the coils out I'm going to fit a narrower insert as per the one pre-fitted in my Alberich.

    While the said Allberich will never be a favouite of mine because of its imho awkward deck to build on and fussy wicking needs I have to say flavour wise it beat the Brunhildes initially.
     

    Daniel Forsyth

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  • Mar 26, 2019
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    This is a great topic. I'm convinced to order a couple!!

    Thanks everyone.
    The Brunhilde MTL RTA is an awesome tank that would definitely suit you Mate!
    I highly recommend grabbing yourself one or ten :thumb:
     

    Daniel Forsyth

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    I have to try them, I must trust my fellow long time MTL'ers.

    Two are in route. ;)
    That's great to hear! I do hope you enjoy them as much as I do :thumb:
    I'll be very interested to hear what you think when you receive them!!
     

    Kalyptic

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  • Jul 22, 2023
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    On the question of flavour, as an experiment, I made up a couple of 1.5 ohm coils for my Brunhildes and fitted them yesterday.

    Running them at 10 watts has produced a remarkable increase in flavour as opposed to the previous 0.8 ohm coils running at 14 watts.

    When next I have the coils out I'm going to fit a narrower insert as per the one pre-fitted in my Alberich.

    While the said Allberich will never be a favouite of mine because of its imho awkward deck to build on and fussy wicking needs I have to say flavour wise it beat the Brunhildes initially.
    I'll have to give that a try, what type of wire and ID are you using?
     
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    Falconeer

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    I'm using plain Kanthal - 26 guage I think, but I bought this reel of wire so long ago I can't say offhand - I tend to knock these out on auto pilot - I have at least half a dozen made up.

    Tomorrow morning I'll check my tools and see what ID I used - basically it's the biggest one my mandrel will make.

    For the Brunhilde, it dead easy and you want the end coil legs going in opposite directions. The Brunhilde has just about the easiest deck to build on in the universe and its very forgiving.
     

    Real-ist

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    I'm using plain Kanthal - 26 guage I think, but I bought this reel of wire so long ago I can't say offhand - I tend to knock these out on auto pilot - I have at least half a dozen made up.

    Tomorrow morning I'll check my tools and see what ID I used - basically it's the biggest one my mandrel will make.

    For the Brunhilde, it dead easy and you want the end coil legs going in opposite directions. The Brunhilde has just about the easiest deck to build on in the universe and its very forgiving.
    I'll need to get some wire for coil building soonish.
     

    Falconeer

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    OK here we go - the wire I’m using is actually 28 guage plain Kanthal.

    My mandrel is marked, 1.5, 20.0, 2.5. 3.0 and 3.5. I’ll use either 2.5 or 3 depending on the mood I’m in, how much room there is on the deck, how far apart the posts are, and ( in Scotland in the Winter) how much available light there is.

    I nominally aim for 1.6 Ohms but I’m pretty relaxed about it, as for me, anywhere between 1.2 to 1.8 Ohms is fine for MTL Vaping. YMMV.

    I personally don’t like spaced coils as I find them the very Devil to wick.

    When I first started making coils, back in the day, kit wasn’t so readily available and I/we’d use drill bits, nails, small screwdrivers, even one of our wife’s knitting pins or crochet hooks to wind round. I started off using 10 turns, fitting the coil, taking a reading and worked from there.

    As for wicking, a lot of people, including me then, bought a big bag of cotton balls from the nearest Supermarket, unrolled them and cut them to size with the kitchen scissors.

    I leave the coil legs quite long, but fold overhangs well apart and never touching anything metal while I burn the coil in, to check that it is glowing evenly and that it doesn’t have hot legs before giving it a final squeeze with ceramic tweezers before wicking, then I cut off the overhangs.

    CAVEAT - if you are using a mod to check the Ohms and to burn in the coil and don’t have ceramic tweezers so are using metal ones double check that the mod is switched off - the results can be spectacular to dangerous if you accidentally touch the firing button as I can attest!

    Nowadays for ease I use Pro Vape cotton to wick as it is precut to standard uniform width which makes life easy.

    Apologies for the long post, especially if you already know most of this.
     

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