Using regular building bricks for the exhaust tunnel instead of pipe? (stove pipe is too expensive)

hello everyone I would like to Use regular bricks for the tunnel in the heat storage mass, is it possible? the stove pipe is very expensive where i live and the 8" type is not even on the market.
I have two kinds of regular brick, Red and yellow brick. these are my options. So if i make the tunnel from this without any metal pipe, will they crack and release gases into the room?
Also Anyone knows what the temperatures are at the beginning of the exhaust system?
can anyone with experience give me the answers please, i would thank you a 1000 times.

Simon Opaski : Welcome to Permies, and a big Welcome to Permies 'Rocket heaters' and also the 'Wood Heaters' Forum/ threads. with over 19,000 fellow members from all around
the world, you can come here 24 /7 and usually find someone who wants to talk about what you want to talk about. You will long remember your first few posts here at Permies, lets
get you started.

We have a member who lives on the Canary Islands and everything has to be imported and Her project has dragged on for years, she is nearly done and many of us will celebrate
her victory ! Your story can not be as hard as Hers!

living on this side of the Atlantic it is easy for us to forget how lucky we are with all our abundance, occasionally you will get some unhelpful advice from people who are just unaware
of your circumstances, but we will try and try to help ! Sometimes the answers come a little slowly as many members know that it will be hard to help you do to your location, so this
should get you started !

You have two resources right here on this page, at the top right of this page under the advertisers banner you will see the Permies Toolbox, if you click on search- it will take you to
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'' Similar Threads " > a computer somewhere thinks it has selected well, Similar threads, often it is right ! When in doubt start here, if there is a 'rocket in your future you will find
it here at permies !

some good key words would be brick tunnel(S) Exhaust tunnels , horizontal chimneys, materials to make - -

Finally, The best tool you can have early is to go to rocketstoves.com to get your PDF Copies $15.ooUSD of Evans' and Jackson's great book 'Rocket Mass Heaters' there is STILL No
other book in any language that contains as much Rocket Mass Heater R.M.H., family information ! (and I don't make a dime) With over 100,000 R.M.H.s built world wide this is
'The Book' that built most of them, and over 95% of all the 1st builds that worked ! Good luck, for the Good of All things permies.

Think like Fire, flow like a Gas, Don't be the Marshmallow! As always your comments and questions are Solicited and Are Welcome ! PYRO - Logically Big AL !

Half barrel system

http://donkey32.proboards.com/thread/560

http://donkey32.proboards.com/thread/609/heated-seating-nyc-restaurant

http://api.viglink.com/api/click?format=go&key=bbb516d91daee20498798694a42dd559&loc=http%3A%2F%2Fdonkey32.proboards.com%2Fthread%2F609%2Fheated-seating-nyc-restaurant&v=1&libId=f72e0092-e59e-48d5-9221-af8ad5ee6f3f&out=http%3A%2F%2Fs65.photobucket.com%2Falbums%2Fh228%2Fmremine%2FNYC%2520Rocket%2520Stove%2520Build%2F&ref=http%3A%2F%2Fdonkey32.proboards.com%2Fboard%2F5%2Ffinishing-finished&title=Heated%20Seating%20for%20NYC%20Restaurant%20%7C%20Rocket%20Stoves..%20Experimenters%20corner..%20Answers%20questioned!&txt=s65.photobucket.com%2Falbums%2Fh228%2Fmremine%2FNYC%2520Rocket%2520Stove%2520Build%2F&jsonp=vglnk_jsonp_13808235034376

Cheap!

Satamax Antone wrote:Half barrel system

http://donkey32.proboards.com/thread/560

http://donkey32.proboards.com/thread/609/heated-seating-nyc-restaurant

http://api.viglink.com/api/click?format=go&key=bbb516d91daee20498798694a42dd559&loc=http%3A%2F%2Fdonkey32.proboards.com%2Fthread%2F609%2Fheated-seating-nyc-restaurant&v=1&libId=f72e0092-e59e-48d5-9221-af8ad5ee6f3f&out=http%3A%2F%2Fs65.photobucket.com%2Falbums%2Fh228%2Fmremine%2FNYC%2520Rocket%2520Stove%2520Build%2F&ref=http%3A%2F%2Fdonkey32.proboards.com%2Fboard%2F5%2Ffinishing-finished&title=Heated%20Seating%20for%20NYC%20Restaurant%20%7C%20Rocket%20Stoves..%20Experimenters%20corner..%20Answers%20questioned!&txt=s65.photobucket.com%2Falbums%2Fh228%2Fmremine%2FNYC%2520Rocket%2520Stove%2520Build%2F&jsonp=vglnk_jsonp_13808235034376

Cheap!

Thanks for the great idea!
is the system as efficient with this barrel tunneling like the other with regular pipe ?
thanks a lot, that was great

Simon opaski wrote:

Satamax Antone wrote:Half barrel system

http://donkey32.proboards.com/thread/560

http://donkey32.proboards.com/thread/609/heated-seating-nyc-restaurant

http://api.viglink.com/api/click?format=go&key=bbb516d91daee20498798694a42dd559&loc=http%3A%2F%2Fdonkey32.proboards.com%2Fthread%2F609%2Fheated-seating-nyc-restaurant&v=1&libId=f72e0092-e59e-48d5-9221-af8ad5ee6f3f&out=http%3A%2F%2Fs65.photobucket.com%2Falbums%2Fh228%2Fmremine%2FNYC%2520Rocket%2520Stove%2520Build%2F&ref=http%3A%2F%2Fdonkey32.proboards.com%2Fboard%2F5%2Ffinishing-finished&title=Heated%20Seating%20for%20NYC%20Restaurant%20%7C%20Rocket%20Stoves..%20Experimenters%20corner..%20Answers%20questioned!&txt=s65.photobucket.com%2Falbums%2Fh228%2Fmremine%2FNYC%2520Rocket%2520Stove%2520Build%2F&jsonp=vglnk_jsonp_13808235034376

Cheap!

Thanks for the great idea!
is the system as efficient with this barrel tunneling like the other with regular pipe ?
thanks a lot, that was great

I would say better. Tho, carefull not to exctract too much heat with too long a tunel. Irc, Matthew was saying he went a bit long for a eight incher in the new york restaurant. 8 half barrels 7metres should do the trick. imho.