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Vapor Path Restriction

Buildozer

Baked & Fried
it seems that the Vapor Path Restriction used in the test likely does NO atomizing.. but it seems that a restriction in the vapor path, regulates air flow and temp in the extraction chamber.. causing a slower more thorough(medicating) extraction.. also cooling/smoothing the vapor being forced through the restriction.. its pretty easy to rig up and test. i think its worth looking into and discussing.
 

t-dub

Vapor Sloth
So I guess, technically speaking, the Cloud has it's restriction before the ELB in the bamboo. One thing I love about the Cloud is the almost complete lack of reclaim or buildup to deal with. It appears that putting the vapor path restriction after the bowl, creates quite a bit of oil I think.
 

nopartofme

Over the falls, in a barrel
Over in the Cera thread, NothingToSeeHere had a run of custom ceramic mouthpieces manufactured in order to reduce the restriction, as many had disliked it and were making their own modded mouthpieces from various materials.

I'm a big fan the original Cera mouthpiece but was curious about the results others were experiencing by getting rid of the vapor path restriction and wanted to do some testing as a fan of the restriction, so I picked up a custom mouthpiece myself.

Unfortunately my Cera's in for repairs so I haven't been able to do any testing yet. Once I'm able I'll be sure to report back here, as I think seeing data from the opposite approach (going from restricted to not restricted) could be interesting!
 
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Buildozer

Baked & Fried
So I guess, technically speaking, the Cloud has it's restriction before the ELB in the bamboo. One thing I love about the Cloud is the almost complete lack of reclaim or buildup to deal with. It appears that putting the vapor path restriction after the bowl, creates quite a bit of oil I think.
It makes sense that the restriction in the vapor path is the cause of all the 'reclaim'.
Interesting to think about restrictions before the vapor path.
I cant clearly picture how restrictions come into play when they are before the extraction chamber.. because i don't really understand what's happening on the exit side of the restriction.. other than temp decrease.?? but if the restrictions are hotter than the air then maybe you can avoid temp fluctuation, and get a more steady flow/more even temp of incoming air??
I don't exactly understand how the clouds bamboo does what it does.. but i'm glad it does haha.
I wish i understood more about that.
 
Buildozer,

nopartofme

Over the falls, in a barrel
So I guess, technically speaking, the Cloud has it's restriction before the ELB in the bamboo. One thing I love about the Cloud is the almost complete lack of reclaim or buildup to deal with. It appears that putting the vapor path restriction after the bowl, creates quite a bit of oil I think.
I hadn't thought about the restriction before the vapor path. The Cera is even more restricted there; the intake holes are tiny. Thanks, good food for thought…
 
nopartofme,

luchiano

Well-Known Member
You want cool air to get a thick cloud type of vapor. If it is warm it will be more thinner, as hot air can hold more substances, then cool air. My THEORY is the sub gets thick vapor fast due to the metal not holding heat as well as glass, and airflow temperature during inhale. I won't go into detail because I'm making people mad with my post pertaining to different vapes, and the mods might ban me for it.
 
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Buildozer

Baked & Fried
You want cool air to get a thick cloud type of vapor. If it is warm it will be more thinner, as hot air can hold more substances, then cool air. My THEORY is the sub gets thick vapor fast due to the metal not holding heat as well as glass, and airflow temperature during inhale. I won't go into detail because I'm making people mad with my post pertaining to different vapes, and the mods might ban me for it.

i feel like steel would retain heat better than glass.. it's cool dude go into detail.. i don't mind.. but if you can, try to layman's terms it a little.. haha.. all i know is, IMO i'm getting good results w/ what i'm doing.. i'm more of a results guy.. i like to try things and guess what it means haa.. the easy part.. that's why i appreciate you doing the thinking/analyzing part like you do.. it's just some times i'm not totally sure what you mean hah.. but if it wasn't for you doing your thing i wouldn't have been able to understand what i do so far. so thanks. go ahead..
 
Buildozer,

luchiano

Well-Known Member
i feel like steel would retain heat better than glass.. it's cool dude go into detail.. i don't mind.. but if you can, try to layman's terms it a little.. haha.. all i know is, IMO i'm getting good results w/ what i'm doing.. i'm more of a results guy.. i like to try things and guess what it means haa.. the easy part.. that's why i appreciate you doing the thinking/analyzing part like you do.. it's just some times i'm not totally sure what you mean hah.. but if it wasn't for you doing your thing i wouldn't have been able to understand what i do so far. so thanks. go ahead..
The metal is a better conductor of heat then glass, which means it will cool down faster then glass would.
I sent you a post going more in depth.
 

luchiano

Well-Known Member
That was in the sub thread. have at it over here as theory.
His rant was about more then me posting in the sub thread on my ideas of how it's working. If he left it at that I wouldn't have an issue with the way he came at me, but I have a really good idea why he did that, and it wasn't really about me.
 
luchiano,

Buildozer

Baked & Fried
i just saw this on the zen pen site under Vapor Path and Theory..

Suction from the mouthpiece creates a region of negative pressure inside the chamber. This encourages extraction of oil, as the temporary low pressure literally “sucks” oil from the herbs and into the vapor state. The vapor continues to the end of the chamber and is delivered to you.
vaporpath-1024x754.jpg
 

poonman

Well-Known Member
100 % agreed .
I was going to post this observation in the Solo thread .
But yes , I seem to get way more resin/oil build up in the herb chamber part of the stems ,
when using the Omi-tips .

It's good you found some tech/details to back it up tho .
 

Buildozer

Baked & Fried
100 % agreed .
I was going to post this observation in the Solo thread .
But yes , I seem to get way more resin/oil build up in the herb chamber part of the stems ,
when using the Omi-tips .

It's good you found some tech/details to back it up tho .

ya.. thanks to this discussion, that's pretty much what i have come to understand is going on anyway.. but its cool to hear about it from somewhere else in the same way.
 
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filteredhead

Well-Known Member
IMO the cloud was hard to tell the difference w/ the restriction.. the cloud is incredibly smooth and awesome as it is.. stu didn't notice a real difference either.. but w/ my vapor bros its night and day.. i had a feeling upping the temp wouldn't be enough for the cloud.. i suspect its because the male joint doesn't get nearly as hot as my preheated whip.. which IMO is most important for that instant dense vapor like the sub gives.. i want to ask charliedontsurf if he would be willing to try and make me a 1-pc. custom bowl for my Vapor Bros.. that has a glass restriction closer to the bowl.. to minimize the size of it all.. and so it could get pre-heated w/ my whip bowl... so i can do a more accurate test.. even if it doesn't stay hot enough at the restriction.. i would still be happy w/ it.. i'll draw a rough idea of what i'm talking about and take a pic of it by the vb whip.. i'll try to get around to it today and edit it back into this post.. but no promises, i'm in no rush ATM ha.. i was going to draw it up and do the picture beside the whip anyway because i wanted to show it to CDS and see what he thought. so i'll just post it here too when i make time for it. keep experimenting man, that's what its all about.. if you get any interesting results, it would be cool to bring it up in the Vapor Path Restriction thread too. just to have more related info in one place.

Thank you for pointing me to this thread. When posting about this originally in the VX Cloud thread I had not realized how in-depth the topic was being covered here in this thread. Thanks again for the pointer here.

This week I have been hitting the Cloud through a dry bubbler with and without the heated/restricted glass adapter, also tried unheated restriction. The vapor starts pretty quick with the stock cloud as it is, and the taste doesn't seem to improve with adapter added. After reviewing this thread and looking at the restriction opening used on the Sublimator, I am pretty sure that the glass disc screen/steel mesh screen restriction i was using originally was not restrictive enough. Turns out I do have one omi-tip but also found that the silicone mp from a kanger e-cig cart as-is fits/seals perfectly into the 14mm end of the 14/18 adapter. The silicone mp has a hole opening that appears similar to the opening on the omi-tip. So i started to test with that new/more restricted setup along with using higher temps and larger loads between .05g and .1g. I will say that those are very large load sizes for me and was knocked on my ass regardless of the setup. Never coughed, seriously for months now. I tried to finish each load in a single hit and did not notice differences in hit harshness or feel, but there may have been some since afterwards abv is slightly darker than without restriction. Also with the higher restriction there appears to be a slightly longer delay of initial vapor production and the taste seemed better with stock VXC and ELB without the restriction. What helped vapor production start faster with the Cloud was no restriction and simply heating up the glass adapter's 18mm female joint (without any restriction in 14mm end), this seemed to result in ELB conduction heating when the cloud's male 18mm GonG joint would be inserted into the adapter's pre-heated 18mm female joint.

After trying the VX Cloud and dry bubbler combo with restriction and without, I am now thinking to test the setup with my EQ/V-Tower instead of the VXC.
 

Buildozer

Baked & Fried
Thank you for pointing me to this thread. When posting about this originally in the VX Cloud thread I had not realized how in-depth the topic was being covered here in this thread. Thanks again for the pointer here.

This week I have been hitting the Cloud through a dry bubbler with and without the heated/restricted glass adapter, also tried unheated restriction. The vapor starts pretty quick with the stock cloud as it is, and the taste doesn't seem to improve with adapter added. After reviewing this thread and looking at the restriction opening used on the Sublimator, I am pretty sure that the glass disc screen/steel mesh screen restriction i was using originally was not restrictive enough. Turns out I do have one omi-tip but also found that the silicone mp from a kanger e-cig cart as-is fits/seals perfectly into the 14mm end of the 14/18 adapter. The silicone mp has a hole opening that appears similar to the opening on the omi-tip. So i started to test with that new/more restricted setup along with using higher temps and larger loads between .05g and .1g. I will say that those are very large load sizes for me and was knocked on my ass regardless of the setup. Never coughed, seriously for months now. I tried to finish each load in a single hit and did not notice differences in hit harshness or feel, but there may have been some since afterwards abv is slightly darker than without restriction. Also with the higher restriction there appears to be a slightly longer delay of initial vapor production and the taste seemed better with stock VXC and ELB without the restriction. What helped vapor production start faster with the Cloud was no restriction and simply heating up the glass adapter's 18mm female joint (without any restriction in 14mm end), this seemed to result in ELB conduction heating when the cloud's male 18mm GonG joint would be inserted into the adapter's pre-heated 18mm female joint.

After trying the VX Cloud and dry bubbler combo with restriction and without, I am now thinking to test the setup with my EQ/V-Tower instead of the VXC.
thanks for joining in.. i'm glad to see the topic being discussed more and more.. i think its an interesting one.. and it seems to gain a little more interest all the time..
discussing and experimenting w/ these things.. further understanding and progression.. bouncing ideas back and forth, and coming together to understand.. that's (a big part of) what FC is all about IMO.. that's what brought me in.. and we have a lot of knowledgeable people here that can assist in that. it's really nice. at the end of the day, i feel like the FC community almost has a responsibility to do that. plus, these types of experiments are fun.. especially when there is something to show. luchiano and timothy, IMO, have had a pretty solid grasp on whats going on w/ the restricted vapor path. if it wasn't for their input i don't know what i would think is going on. i tend to agree w/ their POV on the subject.
the restricted cloud test made me feel like the cloud is a vape that wouldn't benefit as much from this.. because of its minimal conduction... i suspect your EQ test will give more noticeable results.. i feel like it would be a good vape to test it on.. warm up that cyclone good and let us know how it goes.. mess w/ the temp +/- and see how it is.
 

filteredhead

Well-Known Member
The EQ and bubbler in my avatar (dry) have been working out well for several sessions so far. I have been using a glass adapter fitted with a 2mm restriction and without (open-flow pass-thru). Also tried both leaving the glass adapter unheated as well as heating it up by EQ unit. Note, I normally do not use a cyclone/elbow/tubing with my EQ at all, i just load the herb on top of a screen fitted below the 18mm female joint of a pass-thru glass adapter -- so it was easy to just add the silicone restriction to the other end of the same pass-thru glass adapter.

Test process: Prior to a session i let the EQ come up to temp for at least 15 minutes and run it set to 356f/180c. Using the same GSC strain, load .04g in glass adapter screen bowl, take 1 long hit, exhale and note taste, dump and save abv to compare with remaining hits in session, repeat 3 more times resulting in 4 hits/abv piles per session. For each hit in session, i would change one variable:
- hit1: unheated glass adapter without restriction
- hit2: unheated glass adapter with 2mm restriction
- hit3: heated glass adapter without restriction (adapter heated on EQ for 5 minutes prior)
- hit4: heated glass adapter with 2mm restriction (adapter heated on EQ for 5 minutes prior)

Here are videos of a set of 4 hits from a recent session:

Here are a few observations after some sessions, that may change after more testing:
- the abv for hits 1 and 2 appear the same shade to me, if there is a difference in shade it is very slight to point where I cannot detect.
- the abv for hits 3 and 4 are darker than hits 1 and 2, with hit 4's abv being darkest of all and hit 3's abv only slightly ligher.
- all hits were smooth, none made me cough, all tasted good, the lighter the abv the better the taste.
- the vapor appears quicker when the glass adapter is heated on the EQ prior to taking a hit (regardless of restriction used or not).
- with restriction present, it does seem more heat is being kept in contact with herb longer. restriction also governs the inhalation speed, which reserves lung capacity needed to take a longer hit without having to focus as much on technique. found it is important to pull rather hard initially otherwise it would take longer for vapor to start flowing, and after it started flowing then slight changes in suck pressure would not interfere with the draw's vapor flow.
- without restriction present, along with the EQ's native non-restrictive draw path and no water in bubbler resulting in even less drag, found it important to pull medium draw speed initially to start vapor flowing and then ease up inhalation speed and suck pressure to ensure enough lung capacity for remainder of long hit. This last bit of technique was learned from FC posts last year when I was learning how to get big hits off of my EQ and bubbler last year. With EQ's non-restricted air flow setup plus open flow glass adapters with no restriction changes in draw speed/suck pressure can quickly be reflected in the air/vapor mix being delivered, kinda more touchier to get a good long slow hit when there is no restriction present but it was totally doable with a little practice.
- I see thickish vapor generating in the bubbler at about 8 seconds with EQ, a little faster if glass adapter is heated.

On the VXC, the vapor starts flowing in bubbler after a few seconds maybe 4 seconds max, and Sub seems to do it even faster which seems nicer to me. As good as that would be it is not critical to me especially if it means a compromise of taste. The Sublimator videos show vapor flowing in glass tube almost instantly. I was not able to come close to that performance with my heated/restricted setups in EQ nor with VXC. I guess the Sub may have appropriate materials and design that can go to high temp quickly, vape the herb in a flash, then cool down quickly to avoid too dark of abv, while the atomizer/restriction helps make it easy to honk hard on the piece while governing the heated airflow over the herb?
 

Seek

Apprentice Daydreamer
Anyone notice how the vapor is bluer everytime a restriction is used? Why could this be?
I think my vapor was also bluer when I experimented with the restriction.

I believe there could be 2 actions taking place in the restriction part:
1) The hole shoots a turbulence, which captures larger particles on sides of the glass.
-This would explain faster absorbtion (as there are only small quickly absorbable particles left) and the high ammount of reclaim found beyond the restriction.
-If only this effect takes place, it would mean you don't get higher, but as high quicker with more reclaim.
2) The vapor is accelerating rapidly in the restriction and then expanding rapidly into turbulence. This could potentially rip these larger particles into smaller ones. Heated restriction could amplify this.
-If this happens, it will actually get you higher and faster, but still the same reclaim.

...so I don't know it any of these theories are right. I believe both of them (or at least the first one) could work if the restricion is used.
 

filteredhead

Well-Known Member
Wow good eyes Seek, great hearing your thoughts and yes I see the blue-ish hue when restriction is used (with both the EQ and VXC setups I tried). Below is a screenshot of EQ hit1 thru hit4 from left to right, and hits 2 and 4 seem to have bluer vapor compared to hits 1 and 3.
pgSNYMh.jpg


Also, you may recall a similar bluer vapor appeared with the restriction on the VX Cloud and Mobius Clear too:
psVEflI.jpg
 
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luchiano

Well-Known Member
Anyone notice how the vapor is bluer everytime a restriction is used? Why could this be?
I think my vapor was also bluer when I experimented with the restriction.

I believe there could be 2 actions taking place in the restriction part:
1) The hole shoots a turbulence, which captures larger particles on sides of the glass.
-This would explain faster absorbtion (as there are only small quickly absorbable particles left) and the high ammount of reclaim found beyond the restriction.
-If only this effect takes place, it would mean you don't get higher, but as high quicker with more reclaim.
2) The vapor is accelerating rapidly in the restriction and then expanding rapidly into turbulence. This could potentially rip these larger particles into smaller ones. Heated restriction could amplify this.
-If this happens, it will actually get you higher and faster, but still the same reclaim.

...so I don't know it any of these theories are right. I believe both of them (or at least the first one) could work if the restricion is used.
The reason why the vapor is blue is because of light. It is explained in this post:
http://fuckcombustion.com/threads/should-pure-vapor-have-a-blue-tint.2855/#post-144097

You aren't getting higher from more absorption, you are feeling it faster from your sympathetic nervous system being activated from inhaling a thick cloud. The thicker the cloud, the more activated it becomes. This happens because, this thick cloud is heavier then air, it will block out the needed oxygen, and it will dry out your lungs more then regular air, so the body thinks something is wrong considering your lungs are expanded to capacity, yet very little oxygen is being absorbed. Plus foreign substances are coming in the bloodstream that wasn't there before this inhale. It will activate the sympathetic system to allow you to make use of the very little oxygen you are taking in, as well as process the substances quickly meaning a lot will be degraded or sent to your fat tissue to be processed later. The thing is a lot of this creates metabolites that will lower your tolerance resulting in less high off of the same amount of material. Which makes sense. The body doesn't want that substance to knock it's homeostasis out of whack.

I dealt with it in this post:
http://fuckcombustion.com/threads/tolerance-tips.2876/#post-144403

You also won't be absorbing a lot of that thick vapor. I dealt with it in this post with a scientific article explaining why.
http://fuckcombustion.com/threads/sublimation.9783/page-2#post-404072

This is nice for recreation but, if you are serious about getting NICE or for medical reasons, thick clouds aren't the way to go. PLEASE DON'T KILL ME MANNN!LoL. People HATE to hear this.


The only way to get ultra high, without ingestion, is through constant loading of small bowls, and raising the temperature in increments with each inhale you do. This allows for damn near all of the vapor to get absorbed, without disturbing the body into not using most of it. It takes longer then thicker clouds, but you get way more benefit. You just have to figure out how to use your vaporizer to get the best extraction using this method since vaporizers have different ways to heat the air, and extract the vapor from the bud/concentrate.

This slow method is all throughout nature, and life. When you eat, if you were to take everything down in one gulp, you would either throw it up, or you would get fat, or get sick(diabetes). If you were to eat a lot of foods that absorb, and metabolize quickly like sugar or other simple carbs, you would feel HUNGRY a few hours later, and you would cause sickness in your body, due to low insulin sensitivity. When you eat foods that process more slowly, they last longer, and give you health instead of take it away. The same for vaporizing.
 

luchiano

Well-Known Member
The EQ and bubbler in my avatar (dry) have been working out well for several sessions so far. I have been using a glass adapter fitted with a 2mm restriction and without (open-flow pass-thru). Also tried both leaving the glass adapter unheated as well as heating it up by EQ unit. Note, I normally do not use a cyclone/elbow/tubing with my EQ at all, i just load the herb on top of a screen fitted below the 18mm female joint of a pass-thru glass adapter -- so it was easy to just add the silicone restriction to the other end of the same pass-thru glass adapter.

Test process: Prior to a session i let the EQ come up to temp for at least 15 minutes and run it set to 356f/180c. Using the same GSC strain, load .04g in glass adapter screen bowl, take 1 long hit, exhale and note taste, dump and save abv to compare with remaining hits in session, repeat 3 more times resulting in 4 hits/abv piles per session. For each hit in session, i would change one variable:
- hit1: unheated glass adapter without restriction
- hit2: unheated glass adapter with 2mm restriction
- hit3: heated glass adapter without restriction (adapter heated on EQ for 5 minutes prior)
- hit4: heated glass adapter with 2mm restriction (adapter heated on EQ for 5 minutes prior)

Here are videos of a set of 4 hits from a recent session:

Here are a few observations after some sessions, that may change after more testing:
- the abv for hits 1 and 2 appear the same shade to me, if there is a difference in shade it is very slight to point where I cannot detect.
- the abv for hits 3 and 4 are darker than hits 1 and 2, with hit 4's abv being darkest of all and hit 3's abv only slightly ligher.
- all hits were smooth, none made me cough, all tasted good, the lighter the abv the better the taste.
- the vapor appears quicker when the glass adapter is heated on the EQ prior to taking a hit (regardless of restriction used or not).
- with restriction present, it does seem more heat is being kept in contact with herb longer. restriction also governs the inhalation speed, which reserves lung capacity needed to take a longer hit without having to focus as much on technique. found it is important to pull rather hard initially otherwise it would take longer for vapor to start flowing, and after it started flowing then slight changes in suck pressure would not interfere with the draw's vapor flow.
- without restriction present, along with the EQ's native non-restrictive draw path and no water in bubbler resulting in even less drag, found it important to pull medium draw speed initially to start vapor flowing and then ease up inhalation speed and suck pressure to ensure enough lung capacity for remainder of long hit. This last bit of technique was learned from FC posts last year when I was learning how to get big hits off of my EQ and bubbler last year. With EQ's non-restricted air flow setup plus open flow glass adapters with no restriction changes in draw speed/suck pressure can quickly be reflected in the air/vapor mix being delivered, kinda more touchier to get a good long slow hit when there is no restriction present but it was totally doable with a little practice.
- I see thickish vapor generating in the bubbler at about 8 seconds with EQ, a little faster if glass adapter is heated.

On the VXC, the vapor starts flowing in bubbler after a few seconds maybe 4 seconds max, and Sub seems to do it even faster which seems nicer to me. As good as that would be it is not critical to me especially if it means a compromise of taste. The Sublimator videos show vapor flowing in glass tube almost instantly. I was not able to come close to that performance with my heated/restricted setups in EQ nor with VXC. I guess the Sub may have appropriate materials and design that can go to high temp quickly, vape the herb in a flash, then cool down quickly to avoid too dark of abv, while the atomizer/restriction helps make it easy to honk hard on the piece while governing the heated airflow over the herb?

MODS, I tried to do multiquotes but it's not working so I have to do back to back posts.

Nice Job!

The sublimators heater does this because it's heater is directly above the bowl, and because you have to give it time to heat up, the air is heated to temperature evenly. When you inhale it will extract it instantly, but the air coming in will not have enough time to be at the temperature the heater is so it will cool down the rest of the air allowing for a thicker vapor, and no combustion, if you don't go to high.
 

Buildozer

Baked & Fried
i finally got some footage of my restricted vapor bros in action.. in one video the camera gets shut of before i can show the AVB... but it was green.. i got about 2.5 hits out of a each bowl... and it was still pretty green.. no hot spots.. today when i was cleaning things, i flipped my omicron tip the other way and some how it keeps the herb greener.. not sure whats up w/ that.. but i like it.. keeping the avb from hot spotting was more of a touchy, hit or miss kinda thing before..
the omicron tip seems to be less restricting one direction vs. the other.. the less restricting way gives me the light AVB, even after a few hits... the other way gives much darker AVB.. IMO the tip direction that gave lighter AVB is more of a cerebral effect, and the more restricting direction gives more body effects.. its pretty interesting.
 

VapeHead.com

Well-Known Member
Retailer
Don't forget about Vriptech's patent. Mark describes the Venturi effect of his reducing extraction chamber as a major benefit.

I'll see if we can get him into the thread to comment.

Scrubbing/"atomising" you'll want to pick up a David Goldstein roosterapparatus.com
 
VapeHead.com,

luchiano

Well-Known Member
i finally got some footage of my restricted vapor bros in action.. in one video the camera gets shut of before i can show the AVB... but it was green.. i got about 2.5 hits out of a each bowl... and it was still pretty green.. no hot spots.. today when i was cleaning things, i flipped my omicron tip the other way and some how it keeps the herb greener.. not sure whats up w/ that.. but i like it.. keeping the avb from hot spotting was more of a touchy, hit or miss kinda thing before..

the omicron tip seems to be less restricting one direction vs. the other.. the less restricting way gives me the light AVB, even after a few hits... the other way gives much darker AVB.. IMO the tip direction that gave lighter AVB is more of a cerebral effect, and the more restricting direction gives more body effects.. its pretty interesting.

I'm not sure how big the holes are on the omicron tips but, is it smaller on the end going towards the bowl?. If it is, that could explain the different effects.

The bigger hole that is facing you will allow less back pressure, then if the smaller hole were facing you, due to more air being allowed to escape quicker. It's still weird that it makes such a big difference.

Looks like you are really on to something!.

mod note: Please do not quote more than necessary. Two videos removed.
 

Buildozer

Baked & Fried
I'm not sure how big the holes are on the omicron tips but, is it smaller on the end going towards the bowl?. If it is, that could explain the different effects.

The bigger hole that is facing you will allow less back pressure, then if the smaller hole were facing you, due to more air being allowed to escape quicker. It's still weird that it makes such a big difference.

Looks like you are really on to something!.
ya i think you got it.. it's smaller hole facing (the screen)up, now.. this kinda shape ^, not this v.. in other words it's the outside of the tip facing up, before it was the inside facing up... it can be hard to tell in the video, but you can tell if you look close and know what you are looking for.

BTW nice tests filteredhead!! love all the pics and vids.. i'm wondering though, what temp are you using.. you should try upping the temp.. and try flipping the omicron tip the other way.. flipping the tip changed a lot on my setup.. i was playin w/ restricting an EQ the other day.. it was super rigged up ha.. things didn't go so well for me though.. i rigged a new restriction.. because i didnt have another omicron tip.. and it was too restricted..
 
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