gas bottle wood burner v4

[decoir]

you need something like these

http://www.ebay.co.uk/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313.TR11.TRC1.A0.H0.X4"+steel+pipe.TRS0&_nkw=4"+steel+pipe&_sacat=0

Thanks - yea, that would do. I guess I could get away with a relatively short section and then clamp normal thin-walled flue pipe to that. Although the tube seems cheaper per length than proper flue, so maybe I'll have a longer bit of tube.

 

[Aesgarth]

What did you use for the flue, and where did you buy or find it? I'm having trouble finding anything suitable, i.e. about 4" across with enough wall thicknes to be able to weld it. I've been a scrap dealer but the best I got was some paper-thin 4" stuff which I can't weld properly, or some sturdy downpipe but at 70mm it's too narrow bore, really.

Any ideas?

I bought it from my local steel supplier. I got them to cut it into lengths i could fit in the van. cost about £30 i think for 3 ~2M lengths. Can't remember the size of tube, think it's 4mm wall.

 

[Shedendman]

There is no fixed law or rule that you have to have a round flue as long as it suits the size of the burners output theres nothing wrong with a square or rectangle shaped one

 

[ukracer]

There is no fixed law or rule that you have to have a round flue as long as it suits the size of the burners output theres nothing wrong with a square or rectangle shaped one

What's happens if the flue is bigger than it should be?

 

[brightspark]

What's happens if the flue is bigger than it should be?

u wouldnt get as much heat draw

 

[decoir]

I bought it from my local steel supplier. I got them to cut it into lengths i could fit in the van. cost about £30 i think for 3 ~2M lengths. Can't remember the size of tube, think it's 4mm wall.

Thanks - that's quite cheap, on ebay it's about £15 per metre. I located a steel supplier close to where I live so I'll check it out tomorrow.

There is no fixed law or rule that you have to have a round flue as long as it suits the size of the burners output theres nothing wrong with a square or rectangle shaped one

Surely the trouble then is attaching it to proper bits of flue to take it through walls/ceilings and such?

 

[ukracer]

Thanks - that's quite cheap, on ebay it's about £15 per metre. I located a steel supplier close to where I live so I'll check it out tomorrow.



Surely the trouble then is attaching it to proper bits of flue to take it through walls/ceilings and such?

You make those to match....

 

[decoir]

You make those to match....

Is that the done thing around here, rather than buying flue/liners and adaptors, going-through-wall stuff and all the modular bits? I should look into that, so long as it will be cheaper for the materials. Seems so far that the flue is going to make up 98% of the project cost.

 

[ukracer]

Is that the done thing around here, rather than buying flue/liners and adaptors, going-through-wall stuff and all the modular bits? I should look into that, so long as it will be cheaper for the materials. Seems so far that the flue is going to make up 98% of the project cost.

I was making my own 90 degree bends and selling them for a tenner then saw they cost 60 quid and I was wondering why they always liked the price. Lol

 

[decoir]

I was making my own 90 degree bends and selling them for a tenner then saw they cost 60 quid and I was wondering why they always liked the price. Lol

Were these plain 90 degree pieces or somehow modular? For ease of assembly in the stove's final position, how might one make the various pieces fit together, or would it have to be welded?

 

[ukracer]

Were these plain 90 degree pieces or somehow modular? For ease of assembly in the stove's final position, how might one make the various pieces fit together, or would it have to be welded?

I used a 12 inch band saw to cut 45 degree angles on the pipe and welded them. You can do 22.5 if you like.

I then added strip to the outside of the pipe for a flange made with a metalcraft roller ,and the people who had them used fire rope and or fire cement to join them.....although the pipe dropped in the flange so it was very secure.

 

[DeadSquirrel]

only smokes at the start for 4-5 mins then fully smokeless on most rocket burners

all mine are only 3mm thickness for any part of exit for the flue as your not hitting high temps at that area with rocket burners or the ones i have on display

http://www.dailymotion.com/user/gadily/1

I thought youtube was bad for adverts, but thiis dailymotion hasn't allowed me to get through to less than 15 seconds from the end of the advert. Thus I can't see the build video for the stove.

 

[DeadSquirrel]

Is that building with that cement like stuff??



But confused with the part above.

I just need something simple that will burn little amounts of wood BUT most importantly does not give off smoke.

The world of rocket stoves. There is world class information here amongst which from "peterberg" who has done a lot of fundamental research. Unfortunately the resulting stove may be simple, but the underlying engineering can be a bit involved. Well worth looking at though.
http://donkey32.proboards.com

 

[gaz1]

I choose dailymotion to upload vids because i dont like google/youtube and there forced to register with a phone number system

also youtube has adverts just as much as dailymotion

yeah theres plenty of other rocket burner forums out there

 

[DeadSquirrel]

Managed to see it this morning, I expect all the gamers are doing other things since they take most of the available bandwidth. That and online TV. I'll have a closer look at dailymotion (sounds like a condition after medical attention).

 

[decoir]

I bought it from my local steel supplier. I got them to cut it into lengths i could fit in the van. cost about £30 i think for 3 ~2M lengths. Can't remember the size of tube, think it's 4mm wall.

I picked up 1500mm of 4" x 3mm today from a local steel supplier, worked out at £13/metre which is about in line with eBay prices. Looks like good stuff, pretty sure I can get my ugly welds to stick to it.

 

[gaz1]

decoir just check your heat when its exiting the stove of yours into the chimney if you have a heat gun if not it should be fine enough

 

[DeadSquirrel]

If you weld a spigot onto the stove, you will be ok with a stainless flue with around 18swg walls. This is what is normally supplied for wood burning stoves. Mine has lasted 15 years, and has been our heating source for all that time.

 

[sardine]

My stove has 1 mm stainless flue, in the past I used thick walled mild steel, but never again, the heat that radiates off the thin flue is a major bonus.

 

[ukracer]

If you weld a spigot onto the stove, you will be ok with a stainless flue with around 18swg walls. This is what is normally supplied for wood burning stoves. Mine has lasted 15 years, and has been our heating source for all that time.

What's a spigot. ....