No and not for me either all though I did day dream alot!! Hard to concentrate on anything but her knickers when she bent down to get somethng or leaned over a bench while talking to you. Hard and cruel times had to enjured whilst at school. didn't learn much but always eager to turn up. Sorry H aHummm Always paid full attention to work being taught and never had so much as a thought about such matters would have crossed my inocent hormone raging pubity ridden mind.
Barrabruce, I think there were a lot boys following chemistry that weren't that lucky What do you guys think of this FSP kerosene stove: http://www.newdawnengineering.com/website/stove/paraffin/
Hi Erik I think there are a few in these parts who would dispute this quote from the link : "The problems faced by paraffin stove users around the world are legion. Most of the devices in use are known to have a tendency to explode, or to make a loud *BANG* every now and then". I will study the whole lot when I have time, it looks interesting Cheers
Ah, but we represent a tiny fraction of the world population of paraffin stove users and we tend to maintain our stoves to very high standards (even if it may not always appear so,). Whilst many of us doubtless own some sub-standard stoves, the stooves we use are usually in top order. Furthermore, our stoves get only relatively light use and are very seldom used day-in, day-out. Having said all that, some of us have probably experienced a stove going 'Bang' (or something similar) at one time or another.
I'm impressed that someone is looking into an inexpensive and reliable stove for people that need one. I share bajabum's concern about the plastic fuel lines, and also note that a long fuel line leading to a container of kerosene on a shelf could easily be tripped over and pull down the container, leading to a conflagration. I like the gravity feed idea, but we need to come up with some way to do it safely. ....Arch
No, this can't be right at all. As Ian says, we've probably all experienced the odd flare-up at one time or another, which is not surprising given the age and condition of some stoves we acquire. But a tendency to explode or go BANG - I think not! Not good public relations to have your products blow up the customers. Still, why let the facts get in the way of a good story, eh? Whatever incidents there may have been are probably down to human stupidity rather than poor stove design. Like on the caravan park where I used to have a static 'van. We were all stopped from storing our gas cylinders in wooden sheds, which the following year had to be replaced by metal ones. Why? Because some pillock in a tent had decided he was quick enough to change the gas canister on his stove while it was still alight and save himself the bother of re-lighting it - just how stupid do you have to be...?
Well, this site is talking about designing stoves for countries where: 1. Few people can afford a "name brand" stove, and so are exposed to the wares of the local tinsmiths. 2. The stoves are used to cook meals in crowded huts with children running around. The effects of knocking a cheap stove over in conditions like this may be a loud whoosh, rather than a BANG, but the effects are similar. ....Arch
I got pops. In my stove!!! Just finished fixing the contancorus Bluflam. Not content tryed for gold. Got the old jet and drilled it out to 20 thou. Made a resrictor and fired her up on metho. It sort of surges and yu can hear the back pressure blow down the up tube into the tank. Sort of shhh ohhh shhhh ohhh shhhhhhhhhhh ohhh when it gets enough steam up she burns sort of like a muffled 8r 123 stove. Blue flame with a halo of red. The coughs throw out a green and yellow flame. Played with restrictor. Raised it up a bit to let more O2 in. Burns purple but blows out from burner cap. When it's really pumped up it will burn on the outer housing with no flame on or near burner cap. I know but it had to be done. Hoping to run on 50% metho but it only serges and blow it self out more of a whoomph whoomph. Couldn't get it to run at all on 50%. Took head off as I thought there must be a restriction there and only letting some gas through when enough pressure had built up. Re cleaned and it runs a bit better on metho, but a perfect or near as I have seen on kero. Strange thing though if it is cold and I pre hheat and then light it it works well. Hardly a choof more of a fluctuation like a 8r sort of thing. But if I start it warm by pumping up metho into burner cap and lighting it.Waiting till the metho in the head is gasafying and giving it a pump or two when nearly out it will get a good whoomh whoomp going it till it settles down a gain. If you pump it up real hard at first and it gets a good whoomph it blows itself out. I must of had a bit of carbon in the system somewhere glowing and it made a bang when the next lot of gas came out under the caps, Maybe this is the sort of thing that is happening overseas there. Carbon in the head a glob of water/oil petrol or somethng to make it blow out and whoompher. Please note in the exteme case here the bottom of the tank got hot from the gasses or fuel whatever blowing back into tank. Have changed it back to kero for a beutifull blue flame till I can figure this one out properly. Hope it may try to explain something to someone as it don't make sense to me neither. Bruce Ps I agree about the plastic hose and the bollte sitting up on the whatever. A kid or dog goes past ( or me dragging my feet in a day dream) and you could lose the lot in one foul swoop!!!
Bruce, Good to hear that you are experimenting with different fuels! I have read your post a view times, but I think I need a crash course Aussie language or CCS-slang. Do you have a reference to the stove you used? Anyone already daring to fill it up with plant oil?? Anyway thanks for sharing...
The bluflam is a 2 pint kero silent burner stove made in England. Don't know when. Only stove I have with a spare nipple. Restirictor is a pipe with a hole down one end. You insert it in the tube which goes into the burner head down to the nipple to decrease O2 supply to fuel mix so it will burn around the caps hopefully. If you don't use one the flame will just blow off the burner and blow itself out unless it hits something to interupt flow and keep the flame lit. Had no luck with 50% alcohol. Do I need a 30 tou jet?? Just mixed water with metho and shook up a bit. Went cloady. Or do I have to brew my own for it to mix proprely. Seemed to get blobs of fuel then water I suppose out of the jet when trying to light. No chance of me trying vege oil in a quiet burner.If a had a roarer I might have a play. Way to complecated to try in a quiet burner till the others are sorted out I think.!!! Can you post a link for buying a 50% alcohol burner or parts kit to make one?? Have read some stuff on them but don't speak Whesabi or Narrangatanga to well and they say they are available but where. No REI stor here. Need simple site for simple man. Buy this one for $ Aus $us here now!! thanks erik keep in touch. Thinking of trying to make one soon. Give it a go. Have trouble with the ones that work!!!
Bruce, Take a look at this: http://nariphaltan.virtualave.net/ethstove.pdf I think you can recognise the burner.. Further I came across this great site: http://zenstoves.net/Petrol.htm What a shame that they do not recommend veggie oil in petrol stoves Erik
Very interesting thread. I posted about something similar I think on the old forum some time ago after stumbling across this lot. http://www.bio-power.co.uk/makeit.htm Not big fans of transetrification it seems, which requires nasties like lye and leaves a soap residue which you have to get rid of. I tried the recipe given on the site above to make bio-diesel and used it in an old packaway and it does work reasonably well, but you do end up with a lot of cracking products in the bottom of the tank due I think to the relatively low vapourisation process. (relatively low compared with a compression engine) Eventually the nipple just clogs and you have to clean out all the brown crud that gets left in the bottom of the tank. I might give it another go and leave the oil/white spirit mixture to 'brew' a little longer. It would be interesting trying some of the bio-diesel from one of the commercial producers they list and see what that achieves. Simes
Recently I had a course in chemistry, and we made biodiesel from coconut butter, just added 10% of a soluton of methanol and caustic potash . (This solution was 4% KOH +96% of the purest methanol ) Heated up to boiling, and cooled down. On top it was biodiesel (4/5), under it was some waste (1/5)(glycerine). The waste vas easier to see if colored by eg Tumeric. This prosess was fast, and easy. The smell was nice, near apple or pear. Actually the "diesel" is an ester. This fuel is agressive to rubber. dsk
Nrv valves Tank cap Etc??? Was thinking of trying potassium nitrate or potassium sulphate fertilizer with canola oil for a go one day. Still stumped at this point. The sites say they are using normal looking roarer burners. Do they increase the jet size or something?? Anyway keep this one on the back burner for a while.
So, how much coconut butter does norway produce? I thought the whole idea behind 'bio' fuels was to use common stuff as fuels?
