HeadSmess
Well-Known Member
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- Joined
- May 17, 2010
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http://www.ebay.com/itm/301383654712
yup. im going camping petrol, diesel,kero...lpg...i can burn it all!
http://www.ebay.com.au/itm/131349775063
not sure if that comes up cus i bought the last one...
wtf? whats copper pipe for? 3/16 brake line? with nickel? (i actually wanted stainless but this popped up and was a baaaaaargain )
making the teapot for my camping stove to boil water so i can have tea breaks
erm. maybe.
no, im thinking more like this...
it occurred to me last night that its VERY easy to turn a 2 or 4 stroke into a steam engine.
that video was about all i could find with an eccentric... i dont want no stinking electricity!
4 strokes need the camshaft to be recut so it has two lobes for each valve, in out in out, every stroke.
max steam pressure is limited by the strength of the inlet valve, as it tries to lift under pressure...
a two-stroke, meanwhile...makes a perfect uniflow engine, albeit only single acting. just either a solenoid or a cam/eccentric operated valve where the magneto was, piped to the plug hole! maybe epoxy up the transfers...
you can also have a pin on the piston that smacks a lil ball valve near TDC, like co2 motors do. can you say rough?
lil drip oiler tapped into the side to lube the piston, set so its lining up between the rings at BDC. keep the crank closed with some oil in there...
make it work and then make a single piece cylinder/head with no fins and a ring of exhaust ports as low as possible, with fibreglass insulation
i shall have a go at the engine side tomorrow the first compressed air HT engine unless someone beats me in the next 24 hours or so...
the boiler bits have to wait for the postie and it being silly season... could be a long wait!
there is no way im wrapping copper pipe around the barbecue!...
actually...maybe that isnt such a bad idea either! can they really ping ya for riding a steam powered barbecue?
who wants a kit? (HT steamer, that is...)
no boilers! they (commercially and privately) (sort of)require certification (pump up to double pressure and if it dont explode...)...make ya own!
i could go do some maths first and give figures on torque and therefore HP with RPM... but beware that HP is meaningless on an engine with (virtually) constant torque!
as a basic idea... the 66cc 47 mm piston is just over a square inch.
at 100 psi, thats basically 110 pounds acting on the crank pin, minus losses.
it maynt be up to the peak pressures of IC engines, at 1000psi or so...but that is a brief spike...not constant.
100 pounds@20mm x 1000 rpm equals a fair amount of work .
a flash boiler can be safely worked at 600 psi, more even... they were using up to 1800 psi even back in the early 1900's!
600 pounds@20mm x 1000 rpm is even more work done!
1800 pounds@20mm x 1000 rpm is obviously going to knock the socks off of anything in the near vicinity...
last purchase? i got a new mill its fat took a week to figure out how to get it on a bench
now to use it!
yup. im going camping petrol, diesel,kero...lpg...i can burn it all!
http://www.ebay.com.au/itm/131349775063
not sure if that comes up cus i bought the last one...
wtf? whats copper pipe for? 3/16 brake line? with nickel? (i actually wanted stainless but this popped up and was a baaaaaargain )
making the teapot for my camping stove to boil water so i can have tea breaks
erm. maybe.
no, im thinking more like this...
it occurred to me last night that its VERY easy to turn a 2 or 4 stroke into a steam engine.
that video was about all i could find with an eccentric... i dont want no stinking electricity!
4 strokes need the camshaft to be recut so it has two lobes for each valve, in out in out, every stroke.
max steam pressure is limited by the strength of the inlet valve, as it tries to lift under pressure...
a two-stroke, meanwhile...makes a perfect uniflow engine, albeit only single acting. just either a solenoid or a cam/eccentric operated valve where the magneto was, piped to the plug hole! maybe epoxy up the transfers...
you can also have a pin on the piston that smacks a lil ball valve near TDC, like co2 motors do. can you say rough?
lil drip oiler tapped into the side to lube the piston, set so its lining up between the rings at BDC. keep the crank closed with some oil in there...
make it work and then make a single piece cylinder/head with no fins and a ring of exhaust ports as low as possible, with fibreglass insulation
i shall have a go at the engine side tomorrow the first compressed air HT engine unless someone beats me in the next 24 hours or so...
the boiler bits have to wait for the postie and it being silly season... could be a long wait!
there is no way im wrapping copper pipe around the barbecue!...
actually...maybe that isnt such a bad idea either! can they really ping ya for riding a steam powered barbecue?
who wants a kit? (HT steamer, that is...)
no boilers! they (commercially and privately) (sort of)require certification (pump up to double pressure and if it dont explode...)...make ya own!
i could go do some maths first and give figures on torque and therefore HP with RPM... but beware that HP is meaningless on an engine with (virtually) constant torque!
as a basic idea... the 66cc 47 mm piston is just over a square inch.
at 100 psi, thats basically 110 pounds acting on the crank pin, minus losses.
it maynt be up to the peak pressures of IC engines, at 1000psi or so...but that is a brief spike...not constant.
100 pounds@20mm x 1000 rpm equals a fair amount of work .
a flash boiler can be safely worked at 600 psi, more even... they were using up to 1800 psi even back in the early 1900's!
600 pounds@20mm x 1000 rpm is even more work done!
1800 pounds@20mm x 1000 rpm is obviously going to knock the socks off of anything in the near vicinity...
last purchase? i got a new mill its fat took a week to figure out how to get it on a bench
now to use it!
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