Thick vs Thin Chamber Wall

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Fiver5

Lurker
Sep 6, 2021
41
59
I'm no physics expert but I'm hoping someone here is. I know the general consensus is the thicker the wall the cooler the smoke, but somehow that doesn't make sense to me. I believe the thinking is that a thick wall will soaks up some of the heat, but doesn't a thicker wall just provide more insulation keeping more heat in? A thin wall will feel hotter to the hand, but to my simpleton way of thinking that's a good thing, it just means more of the heat is dissipating rather than being trapped inside.
An air cooled internal combustion engine does everything to get the heat out, including more surface area with cooling fins (or in the pipe world rustication), heat is just the unwanted byproduct.
I'd love to see a real scientific study of this...
 

blackpowderpiper

Part of the Furniture Now
Dec 19, 2018
836
3,877
Middle Tennessee
I have no scientific evidence to present, only my opinions. I don't believe that the thickness of bowl has anything to do with how cool a pipe smokes. I would wager that you could take 10 pipes with thin walls, 10 pipes with thick walls and within each subgroup you will find pipes that smoke cool and some that will smoke hotter. My opinion is that how cool a pipe smokes depends more on the individual piece of briar and how it was processed as well as the technique of the smoker. Factor in also the drilling of the pipe and moisture content of the tobacco, etc.

To support this hypothesis I have pipes with thin walls that smoke relatively cool, at least for me, and pipes with thicker walls that smoke hotter than others. I suspect that how hot or cool a pipe smokes is all subjective to the individual smoker. Just my two cents.
 

workman

Lifer
Jan 5, 2018
2,794
4,230
The Faroe Islands
Air is a bad conductor of heat. Therefore your thin walled pipe will receive more heat than it can get rid off, thus overheating. The larger mass of the thick walled pipe makes it more likely to reach an even in vs out balance of heat.
In my experience, thin walled pipes can be fine smokers but require more attention than I am willing to give. I haven't got any real fat pipes, but my medium sized pipes do a better job than my lightweights of providing a no fuzz smoking experience.
 

workman

Lifer
Jan 5, 2018
2,794
4,230
The Faroe Islands
The temperature of the smoke is not dependent on the thickness of the walls, but the heat coming off the bowl is.

Length of the stem also has no measurable effect on the temperature of the smoke reaching the mouth.
I think there is some confusion about what "a hot smoke" is.
I certainly don't think it has anything to do with the temperature of the smoke coming out of the stem.
When the bowl and the tobacco in the bowl overheat, some changes in flavor and PH will occur, as well as excessive moisture. I don't know why, but that is what happens and it is unpleasant when it does. The smoke probably isn't hotter, but it is wetter and and more acidic, I think.
 
Mar 1, 2014
3,658
4,960
I'm no physics expert but I'm hoping someone here is. I know the general consensus is the thicker the wall the cooler the smoke, but somehow that doesn't make sense to me. I believe the thinking is that a thick wall will soaks up some of the heat, but doesn't a thicker wall just provide more insulation keeping more heat in? A thin wall will feel hotter to the hand, but to my simpleton way of thinking that's a good thing, it just means more of the heat is dissipating rather than being trapped inside.
An air cooled internal combustion engine does everything to get the heat out, including more surface area with cooling fins (or in the pipe world rustication), heat is just the unwanted byproduct.
I'd love to see a real scientific study of this...
100% agree.
The idea of the shape of the bowl affecting the temperature of the smoke is another myth, regardless of the design of the pipe we all know the temperature of the smoke is controlled by your smoking cadence, if your cadence is too fast for a thin pipe then it's too fast in any other pipe.
 
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sablebrush52

The Bard Of Barlings
Jun 15, 2013
20,705
48,981
Southern Oregon
jrs457.wixsite.com
Probably wrong but tossing this out - shouldn't really be any difference except that if you are smoking too hot you are more likely to know that with a thinner walled pipe and can adjust whereas it's possible a thicker walled pipe may disguise that a bit?
Bingo!

The thick VS thin wall pipe myth is, like all pipe myths, a matter of opinion based on observation that fails to connect the dots, and as opinion, is basically bullshit.

I use my thin walled pipes as trainers for keeping my slow smoking cool.
 

Chasing Embers

Captain of the Black Frigate
Nov 12, 2014
44,909
117,165
The temperature of the smoke is not dependent on the thickness of the walls, but the heat coming off the bowl is.
This.

Temperature of the ember is controlled by the smoker and laws of combustion, not the thickness of the pipe. I can smoke this fellow and the outside of the stummel barely gets warm to the touch.

20200704_141658.jpg20200704_141840.jpg
 
Throwing science out the window, I have two very thick walled pipes that the smoke as it hits my tongue is much cooler than any of my other pipes. Whether it’s explainable by science, the stars, or magic…. it just is, and by thicker, I mean chamber walls more than a half inch of briar. Now, whether this is just a fluke of draft engineering, quality of the briar used, or some psychosomatic influence of heaviness of briar on my smoking technique… for me it just is what it is.
 

danish

Starting to Get Obsessed
Jun 12, 2017
247
498
Denmark
I just measured the thickness of the walls of some of my favorite pipes, including a Dunhill, a Georg Jensen and a Winslow. They were all only about 8-9 mm thick somewhat down the bowls. As I was already in 'measuring mode', I found the stem bites were all only about 4,5 mm thick.
 
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mso489

Lifer
Feb 21, 2013
41,210
60,610
I'm interested that some thin walled pipes remain cool to the touch. This is especially noticeable with Kaywoodie Saxons. Other thin walled pipes can get hot enough that I handle them by the stems, only one or two that I own. However, my tiny thin walled Peterson Belgique remains cool to the touch. I think some briar handles heat better than other briar. The thick walled pipe certainly feel cool to the touch, but I doubt that means that the ember itself is cooler.
 

Chasing Embers

Captain of the Black Frigate
Nov 12, 2014
44,909
117,165
Throwing science out the window, I have two very thick walled pipes that the smoke as it hits my tongue is much cooler than any of my other pipes. Whether it’s explainable by science, the stars, or magic…. it just is, and by thicker, I mean chamber walls more than a half inch of briar. Now, whether this is just a fluke of draft engineering, quality of the briar used, or some psychosomatic influence of heaviness of briar on my smoking technique… for me it just is what it is.
Is the draw on them wide open?
 
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