love the vortex generator . ceramic fibre board riser looking good .I am in Portugal and have two wood burning stoves . Both with the Dunsley heat afterburn chambers . They jointly get through 2 1/2 tons of logs over the winter months .loads of wasted heat going up the flues.
Thanks, yes I know all too well how much fuel you need to operate a conventional wood stove, it is incredible how little this stove consumes and the heat produced from it.
Thanks for the material. Obviously every context is different but you work through the material you create very well and in a way that others can really use.
@@LozHarrop It is I, whom must thank you. Keep up the great work and you Probally need a heat shield between the stove and a work bench, since it gets very hot.
You're the man. Love your stoves. I've been working on building one. Your videos have helped me a lot with the issues and design troubles I've had. Thanks. Keep up the good work.
Young Man, Once again I am Impressed. You are a wonder, and you build great Rockets and Knives, also. I shall continue to follow your world, and each project is always a treat, and truly presented so even I can understand. . . . B Blessed BIG time, 2 Day & 4 Ever, You and Yours. . . .
hello my friend, the knives are georgous as always and the leather work is really impressive. I'm sure your clients will be delighted. Looks like you'll be staying warm this winter. Can't wait to see your forge press design and build. Should be great, Booyah!!
What could you do to make the flame burn a blue color which is way more efficient the orange color ??? The flu cap looks beat for sure. Nicely tooled leather sheath for the knife. Good day too.
I am getting all excited about Your Stove experience .. the box loading is what is needed . I have two woodburning stoves , both converted by me to secondary burn chamber performance copied from the Dunsley heat Yorkshire stove on line design . I am curious on the possibility of feeding the burn tube into a larger diameter bowl lower vortex / mixing zone . prior to the vortex getting drawn up the riser I have used stainless steel on both of my woodburners . My neighbours have re[placed their enamelled steel flues twice over the last 10 years .and the latest one is already showing signs of rotting through.A bit like your hood.which clearly shows why Stainless steel is a must . ..
Love the way you offset the throat of your riser to introduce a vortex. All of the rocket stove experimentors I am aware of go for a "double rams horn" effect. Where the flow breaks at the rear of the riser and creates a double vortex. One side rotating clockwise, the other counter clockwise, and doubling back on itself. I always felt that the double rams horn might be working against itself. Yours seems to getting the job done fabulously! Any thoughts? Subscribed.
I just prefer the vortex as i found it also improved draught in the stove, the spiralling of the air also continues inside the exchanger as the gasses move down which helps to dissipate the heat evenly ...cheers
Came for the stove, enchanted by the knives. That Damascus blade is only equalled by the quality of the handle. QUITE the knife, anyone would be covetous of that. I like the riser, am researching ways to make a waste oil gasifier rocket. I am going to try a regeneration loop tube to bring superheated air back to the burn chamber down low to help the gasification. We used to have 'Oil Salamanders' that used these loops. I want to build a small unit to be supplemental heat to my shop. I will have a process controller to adjust the amount of oil and air. DONT want a red hot stove! I want useable hot air to circulate with the existing fans. I will be storing heat in poured concrete units. Will pump some synthetic oil that gets heated at the stove and circulated through the concrete. Am going to circulate some of the heated oil out to another building where I will have a small greenhouse & grow room, they eat up heat. GREAT video!!! Subbed. Retired 69 yo geek. Michael in Colorado.
@@LozHarrop than you very much for thr fast response sir! .. I actually just saw your video on it . Thank you very much . I'm looking to built a unit to heat my garage, here in Wisconsin it gets bloody cold 🥶.
Well, I made my stove. I used what I had and was given to me. It took me 8 days to build. I just bought the flue pipe today and haven't had time to install it yet. I did post the build here on UA-cam. Titled Rocket Stove Heater parts 1-4. I'd really like to have your opinion on it if you have time...
Hi Loz! This riser looks good - will have to see follow videos to see how well it held up in that intense heat. But it seems with better insulating material in the riser, the peak temperatures really gets pushed up. I really like the simplicity of the vortex generator, i.e. geometric arrangement - it just works. I gather with this build there is no secondary air as your primary is hot enough or am I missing something? Thanks.
Hi Ankit, yes there is still the secondary air feed I maybe didnt show it in this video its the same one i started with. have since made another riser for the stove in a later video, I will be updating the stove video shortly with winter on the way. Cheers.
That's ceramic fiber board. I've been doing some research about it and It looks like a great product....but it's spendy. I may get some to put in my stove when I can afford it. It's easy to work with too.
At what point did rocket stoves stop having preheated combustion air to raise combustion temperatures. They used to all have nested steel cylinders with perforations that resulted in counterflow fluid flow that transferred heat from combustion products, to combustion air. Nowadays, the emphasis is on insulating the part of the stove where combustion takes place, and the path the combustion gasses go. One advantage of the combustion air moving down, around the flue, was that as the stove heated up, the buoyancy, and decreased density of the combustion air helps to regulate the heat output(fuel burn rate) of the stove.
The air on this stove is preheated both primary and secondary air. it comes in under the riser and around the firebox before entering the firebox, secondary air is preheated inside the exchanger.
One other question. Did you add an "outdoor air" pipe to get fresh air directly to the secondary air inlet? From what I'm seeing on some builds, just doing that additional link really helps keep the warm air inside (that you have so carefully heated up) and not drawing more/unnecssary cold outside air into the room just to have it warmed up and then burned... A small bit of extra work, but pays back significantly in the end.
Yes mate the main primary air is fed in from outside, the sec air which is a tiny amount just comes from the shop, I could easily modify it but i see little reward, Cheers
Beautiful work,stove and knives,I've never seen that refractive material before.Would you by any chance have a product name for it? Thanks for the share!
Thanks a lot.I haven't ever seen quite that stile of build before,most of the build's in the states are round in and out.This one guy came up with a refractory glass mix foam he mixes with Portland,it's revolutionary i think,he even made a tin form and poured out a bread oven.The stove itself is surrounded by pea gravel and drops into a bed /seat then out the window.Anyway take care and thanks.
Been hanging off making my rocket heater and this and all of your builds has made up my mind. How’s the mods held up until now Loz ? It’s belting out some intense heat. Thanks for sharing your stuff with the world. Take care mate.👌👍
Cheers mate, that refractory I used was not up to the challenge, only lasted 5-6 months before falling apart, im about to remake it very similar way but this time using better materials that will stand up to the task. will get that video out in the next month.
I have a stupid question, why are you always looking to have a vortex in the riser ? Because I have seen other Rocket stove working and the people who did them never mentioned the need to have a vortex so that's why I'm wondering
If I can add any insight, it is that the turbulence, (mixing of gasses and oxygen) and the time it takes for the gasses to spiral up the riser (increased temperature) make for more complete combustion and a more efficient stove.
I've been tossing around an idea for a masonry heater. Your rocket stove has me rethinking that. Are you working off a plan of your own or is it available. Shop I'd like to heat is 30X30.
Hello Stan, I built this stove around 3 years ago and yes it would easily heat 30x30 even bigger than that, my shop s 25x25 and I cant and dont burn this stove all day it gets too hot to work in. There is a very detailed downloadable plan kindly drawn up with quality 3d drawings by a subscriber, they are on my patreon page,
YOU ARE THE FIRST GUY ON THE TUBE THAT KNOWS WHATS GOIN ON WITH THESE STOVES
Thanks Mate yes I understand them well, although to some commenters or armchair critics I have no ideas what im doing 😂
love the vortex generator . ceramic fibre board riser looking good .I am in Portugal and have two wood burning stoves . Both with the Dunsley heat afterburn chambers . They jointly get through 2 1/2 tons of logs over the winter months .loads of wasted heat going up the flues.
Thanks, yes I know all too well how much fuel you need to operate a conventional wood stove, it is incredible how little this stove consumes and the heat produced from it.
Thanks for the material. Obviously every context is different but you work through the material you create very well and in a way that others can really use.
I love your videos! Thanks from the USA for all the info you share. I have learned much from you and you have inspired me to build a rocket stove.
Cheers D
I love your experiments and the way you show process and the results.
glad to help
@@LozHarrop It is I, whom must thank you. Keep up the great work and you Probally need a heat shield between the stove and a work bench, since it gets very hot.
Beauty! One of the best designs on the Internet
You're the man. Love your stoves. I've been working on building one. Your videos have helped me a lot with the issues and design troubles I've had. Thanks. Keep up the good work.
Young Man, Once again I am Impressed. You are a wonder, and you build great Rockets and Knives, also. I shall continue to follow your world, and each project is always a treat, and truly presented so even I can understand. . . . B Blessed BIG time, 2 Day & 4 Ever, You and Yours. . . .
All the best mate
hello my friend, the knives are georgous as always and the leather work is really impressive. I'm sure your clients will be delighted. Looks like you'll be staying warm this winter. Can't wait to see your forge press design and build. Should be great, Booyah!!
Cheers Rick, just about to send you an email mate
What could you do to make the flame burn a blue color which is way more efficient the orange color ??? The flu cap looks beat for sure. Nicely tooled leather sheath for the knife. Good day too.
Great stuff, just the incentive I need to get my own rocket stove back in action!
Fantastic knives, serious craftsmanship!
Thanks, yea get it up and running mate winter soon be here
Very beautiful workmanship
Hey, beautiful knife and amazing developments on the stove. Thanks for sharing that, ppotty!
thanks David
Beautiful knives. Enjoyable video. Impressive rocket stove. Thanks for sharing.
Thanks Jim
Nice work on vortex!
Thanks!
Beautiful blade and powerful stove , well done as always
thank you marc
As usual great work on the rocket stove and especially the knife!! Beautiful workmanship!! Liked !! Subbed !!
Really enjoy your videos, you are a real trail blazer! Tony from Iowa.
Thanks Mr blue
I am getting all excited about Your Stove experience .. the box loading is what is needed . I have two woodburning stoves , both converted by me to secondary burn chamber performance copied from the Dunsley heat Yorkshire stove on line design . I am curious on the possibility of feeding the burn tube into a larger diameter bowl lower vortex / mixing zone . prior to the vortex getting drawn up the riser I have used stainless steel on both of my woodburners . My neighbours have re[placed their enamelled steel flues twice over the last 10 years .and the latest one is already showing signs of rotting through.A bit like your hood.which clearly shows why Stainless steel is a must . ..
Those are some sweet knives you have there.
I like that stove. I don't have money for the stuff to make it but, I can make something like it from clay maybe.
That's a nice knife.
yes you can and use a barrel for the exchanger would work just as good
cheers
Great video. I can't find where the air intake for the stove. Could you point it out?
Love the way you offset the throat of your riser to introduce a vortex. All of the rocket stove experimentors I am aware of go for a "double rams horn" effect. Where the flow breaks at the rear of the riser and creates a double vortex. One side rotating clockwise, the other counter clockwise, and doubling back on itself. I always felt that the double rams horn might be working against itself. Yours seems to getting the job done fabulously! Any thoughts? Subscribed.
I just prefer the vortex as i found it also improved draught in the stove, the spiralling of the air also continues inside the exchanger as the gasses move down which helps to dissipate the heat evenly ...cheers
7:18 absolutely perfect !!
Awesomely great info and beautiful knifes!!
Your knives are beautiful...
thanks Eddie
your board looks like a solid piece of starlite, maurice would be proud lol.
Hi Lozzer
That stove looks bleddy ansome 😬 and those knives were awesome.
Thanks for sharing
ATB Mike
StayCornish😬
Cheers Mike working on the new new pizza oven right now it will be ready for next summers meet up
3:00 I'm impressed already
Came for the stove, enchanted by the knives. That Damascus blade is only equalled by the quality of the handle. QUITE the knife, anyone would be covetous of that. I like the riser, am researching ways to make a waste oil gasifier rocket. I am going to try a regeneration loop tube to bring superheated air back to the burn chamber down low to help the gasification. We used to have 'Oil Salamanders' that used these loops. I want to build a small unit to be supplemental heat to my shop. I will have a process controller to adjust the amount of oil and air. DONT want a red hot stove! I want useable hot air to circulate with the existing fans. I will be storing heat in poured concrete units. Will pump some synthetic oil that gets heated at the stove and circulated through the concrete. Am going to circulate some of the heated oil out to another building where I will have a small greenhouse & grow room, they eat up heat. GREAT video!!! Subbed. Retired 69 yo geek. Michael in Colorado.
Thanks Michael, good luck with the build
Looks great the knives are also beatyfull !!!
cheers
Well done on your design!
Have you ever tried burning coal in your stove ?
If so can you do a video?
Of not could you try and video it?
yes i have used coal it burns well and hot obviously lasts longer than a loading of wood. cheers
@@LozHarrop than you very much for thr fast response sir! .. I actually just saw your video on it . Thank you very much . I'm looking to built a unit to heat my garage, here in Wisconsin it gets bloody cold 🥶.
Well, I made my stove.
I used what I had and was given to me.
It took me 8 days to build.
I just bought the flue pipe today and haven't had time to install it yet.
I did post the build here on UA-cam.
Titled Rocket Stove Heater parts 1-4.
I'd really like to have your opinion on it if you have time...
will take a look mate thanks.
Thank you my friend, your stoves are what inspired me to build one.
Hi Loz! This riser looks good - will have to see follow videos to see how well it held up in that intense heat. But it seems with better insulating material in the riser, the peak temperatures really gets pushed up. I really like the simplicity of the vortex generator, i.e. geometric arrangement - it just works. I gather with this build there is no secondary air as your primary is hot enough or am I missing something? Thanks.
Hi Ankit, yes there is still the secondary air feed I maybe didnt show it in this video its the same one i started with. have since made another riser for the stove in a later video, I will be updating the stove video shortly with winter on the way. Cheers.
KNIFE WOW
That board is a ceramic. Not terribly durable to abrasions, but will take thousands of hot/cool cycles
Thanks, yes hopefully it will
Very nice work!
That's ceramic fiber board. I've been doing some research about it and It looks like a great product....but it's spendy. I may get some to put in my stove when I can afford it. It's easy to work with too.
Hi yes i will get some info on the board, the supplier and prices this week
Stunner knife
At what point did rocket stoves stop having preheated combustion air to raise combustion temperatures. They used to all have nested steel cylinders with perforations that resulted in counterflow fluid flow that transferred heat from combustion products, to combustion air.
Nowadays, the emphasis is on insulating the part of the stove where combustion takes place, and the path the combustion gasses go. One advantage of the combustion air moving down, around the flue, was that as the stove heated up, the buoyancy, and decreased density of the combustion air helps to regulate the heat output(fuel burn rate) of the stove.
The air on this stove is preheated both primary and secondary air. it comes in under the riser and around the firebox before entering the firebox, secondary air is preheated inside the exchanger.
What is the benefit of preheat primary and secondary air?
Thanks. rr
@@RallyeRacin9 they both improve the heat you get from the fuel as in the wood burns better
One other question. Did you add an "outdoor air" pipe to get fresh air directly to the secondary air inlet? From what I'm seeing on some builds, just doing that additional link really helps keep the warm air inside (that you have so carefully heated up) and not drawing more/unnecssary cold outside air into the room just to have it warmed up and then burned... A small bit of extra work, but pays back significantly in the end.
Yes mate the main primary air is fed in from outside, the sec air which is a tiny amount just comes from the shop, I could easily modify it but i see little reward, Cheers
They say to have a insulated riser for best results!
on steel yes but on a solid denser type refractory like my last one there is no point
Duraboard is fantastic up until 1200 but not great in the food feed as is delicate.
Beautiful work,stove and knives,I've never seen that refractive material before.Would you by any chance have a product name for it? Thanks for the share!
Thank you, yes i will get the product name and the supplier this week
Thanks a lot.I haven't ever seen quite that stile of build before,most of the build's in the states are round in and out.This one guy came up with a refractory glass mix foam he mixes with Portland,it's revolutionary i think,he even made a tin form and poured out a bread oven.The stove itself is surrounded by pea gravel and drops into a bed /seat then out the window.Anyway take care and thanks.
Looks like a silicate based ceramic, in which case it will be considerably more instantly 'reflective', so should perform rather better.
My guess was going to be calcium silicate :)
Hopefully it doesn't have asbestos in it.
Great stuff!
11:19 is it too hot? As long as the stove doesn't melt. That vortex is white hot. Bravo.
Cheers bud
How about a rocket stove forge project??
yes i think it could be done
Been hanging off making my rocket heater and this and all of your builds has made up my mind. How’s the mods held up until now Loz ? It’s belting out some intense heat. Thanks for sharing your stuff with the world. Take care mate.👌👍
Cheers mate, that refractory I used was not up to the challenge, only lasted 5-6 months before falling apart, im about to remake it very similar way but this time using better materials that will stand up to the task. will get that video out in the next month.
Loz Harrop Cheers mate I’ll hold off with anticipation. Best of luck 👍
please tell me what white insulation you cut and use.
kao wool
I have a stupid question, why are you always looking to have a vortex in the riser ?
Because I have seen other Rocket stove working and the people who did them never mentioned the need to have a vortex so that's why I'm wondering
Because a vortex gives a cleaner burn straight away and heats the riser up faster
If I can add any insight, it is that the turbulence, (mixing of gasses and oxygen) and the time it takes for the gasses to spiral up the riser (increased temperature) make for more complete combustion and a more efficient stove.
Thank you Thomas
great job, what kind of glass you use for the windows
its ceramic glass
I've been tossing around an idea for a masonry heater. Your rocket stove has me rethinking that. Are you working off a plan of your own or is it available. Shop I'd like to heat is 30X30.
Hello Stan, I built this stove around 3 years ago and yes it would easily heat 30x30 even bigger than that, my shop s 25x25 and I cant and dont burn this stove all day it gets too hot to work in. There is a very detailed downloadable plan kindly drawn up with quality 3d drawings by a subscriber, they are on my patreon page,
Great video and explanation as always! Be interesting to see how well the vermiculite board fares. Did you make a secondary air hole this time around?
Hi philip yes its in exactly the same place as the last one just forgot to mention that
hey potty pass me one of those c-clamps
ceramictiletonight hilarious! They’ll only be about 150-200 centigrade. Lol
Looks good, thanks for posting. Where do you get your vermiculite from?
thanks John, local company stock it
Loz, I hope you used stainless steel screws
Martin
Can you remind me of the size of the copper tube used for the secondary air supply, was it 22mm or 28mm? Cheers!
22mm Philip
Great, what is the actual size of all?
Like how is this vented?
the flue exit is at the bottom of the Exchanger bud
what happened to the old riser? and how long did the old one last?
Is there anyway to get a set of detailed plan for your rocket stove?
Yes the plan for the whole build including detailed 3d drawings is on my patreon page
love 'yew' too!! ha ha! ;-) very nice work!
Will the screws hold up to the heat?
yes they will be fine enclosed in the insulation
Find out what that refractory board stuff is and link it, I want to try it!
will do but best wait until its had a few burns i think
Have you done some more burns yet?
How does the "refractory board stuff"?
Méretekről lehetne több információt?
Rocket stove forge
Genialidad pura
gracias
how do I contact you to buy a knife ?
Hi Jack, you can go to my website and get me through the contact page lharropknives.com cheers
You are a God, Matey..!!
haha just winging it mate
Sûrement intéressant mais je comprends RIEN😁😁😁😁
you are funny ;-)