Hi all,
not really a bushcraft project but definatly an interesting little DIYish stove!
back last year i came upon a handfull of primus burner and tilley lamp parts, i had a bit of spare time on my hands so i decided to hash up a MSR type stove using some of the bits.
My first hurdle was providing fuel pressure, i decided that an MSR type pump in a sigg bottle would be the best idea, but alas, i could not get one shipped to where i was working for at least four months...... a few hours of head scratching and machining on the lathe gave me a working aluminium pump with a non return valve out of a tilley lamp fuel pump. I trial ran this pump on a primus burner head using a 1/4" BSP flexible fuel hose off a commercial oil buner and it worked a treat, i would have liked to use a 1/8" pipe but i didnt have one in the workshop. (see pic entitle "pump trial")
After proving the pump the next step was to fabricate a base for the burner and some sort of panstand....... a few ideas were toyed with but i ended up with an aluminium base that the bruner screws into. this aluminium block also holds the pan stand legs which are 2mm mild steel . (see pic entitled "burner base" & "parts ready for assembly") during testing this aluminuim block got rather hot, this is a disadvantage if setting the stove upon anything flamable but it helps to vaporise the fuel before it hits the jets.
the stove was used in anger a few times and the main disadvantages were that i was unable to turn it off ( i had to judge the amount of fuel that i put in the sigg bottle) and the above mentioned hot base. I decided that a fuel valve was essential in the system to: A: shut off fuel, and B: regulate the fuel supply for simmering etc.
in order to achive this i fitted a tilley lamp vaporiser tube complete with fuel valve between the pump and the burner, this proivided the essential fuel shut off and also made the stove far more stable as the pump and bottle acts as a great counterwieght stopping the burner toppling over. (see pic entitled "melting snow for a brew").
the problem of the hot base has been addressed but i forgot to take any more pics, i will take a few on the weekend and update next week!!
the main probelm with using tilley and primus parts was that all of the threads on the components were non standard..... they had a very very fine pitch compared to thier diameter. this was overcome by turning down the thread and recutting with standard thread forms.
for use in a snow hole i mounted the stove on a plywood base to stop it melitng itself into the ice during use.
check out the pictures here:
http://s1324.beta.photobucket.com/u.../modified primus stove into sigg bottle stove
I enjoyed making a handfull of old unused components into a working stove even if it is a little heavy to be taking out in your daysack. it turned out to be a very reliable and capable little unit.
Burner
not really a bushcraft project but definatly an interesting little DIYish stove!
back last year i came upon a handfull of primus burner and tilley lamp parts, i had a bit of spare time on my hands so i decided to hash up a MSR type stove using some of the bits.
My first hurdle was providing fuel pressure, i decided that an MSR type pump in a sigg bottle would be the best idea, but alas, i could not get one shipped to where i was working for at least four months...... a few hours of head scratching and machining on the lathe gave me a working aluminium pump with a non return valve out of a tilley lamp fuel pump. I trial ran this pump on a primus burner head using a 1/4" BSP flexible fuel hose off a commercial oil buner and it worked a treat, i would have liked to use a 1/8" pipe but i didnt have one in the workshop. (see pic entitle "pump trial")
After proving the pump the next step was to fabricate a base for the burner and some sort of panstand....... a few ideas were toyed with but i ended up with an aluminium base that the bruner screws into. this aluminium block also holds the pan stand legs which are 2mm mild steel . (see pic entitled "burner base" & "parts ready for assembly") during testing this aluminuim block got rather hot, this is a disadvantage if setting the stove upon anything flamable but it helps to vaporise the fuel before it hits the jets.
the stove was used in anger a few times and the main disadvantages were that i was unable to turn it off ( i had to judge the amount of fuel that i put in the sigg bottle) and the above mentioned hot base. I decided that a fuel valve was essential in the system to: A: shut off fuel, and B: regulate the fuel supply for simmering etc.
in order to achive this i fitted a tilley lamp vaporiser tube complete with fuel valve between the pump and the burner, this proivided the essential fuel shut off and also made the stove far more stable as the pump and bottle acts as a great counterwieght stopping the burner toppling over. (see pic entitled "melting snow for a brew").
the problem of the hot base has been addressed but i forgot to take any more pics, i will take a few on the weekend and update next week!!
the main probelm with using tilley and primus parts was that all of the threads on the components were non standard..... they had a very very fine pitch compared to thier diameter. this was overcome by turning down the thread and recutting with standard thread forms.
for use in a snow hole i mounted the stove on a plywood base to stop it melitng itself into the ice during use.
check out the pictures here:
http://s1324.beta.photobucket.com/u.../modified primus stove into sigg bottle stove
I enjoyed making a handfull of old unused components into a working stove even if it is a little heavy to be taking out in your daysack. it turned out to be a very reliable and capable little unit.
Burner
