Tried running it again...... 8/6/03
| Well i made some major mods to the internals of the combustion chamber, but they made things much much worse. So i undid a lot of what i had done, so as to be not quite so bad. When i came to test the engine my power supply that runs the oil & ignition stuff broke. When i got it all fixed again the engine ran better spooled up to higher speeds but altermately still wouldnt self sustain, so i 'm making a new combustion chamber. I reckon because my combustion chamber is too short as the gas speeds pick up, the flame front moves from the combustion into the turbine itself and stops the engine. The new combustion chamber should fix all this.
Finally Tried running it again 08/12/02
Video Edition
| Well the mods kinda worked. The engine started on every attempt, last time i tried running the engine it was when it felt like it. When you see the flame coming out the back (to much fuel) The base of the flame is blue meaning much better combustion inside so more holes needed i reckon, plus thinking about a redesign of combustion chamber too. Unfortunaty the engine is still not self sustaining.
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| Hehe too much fuel again but everyone loves fire :)
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Finally got around to drilling some holes 12/10/02
| Right obviously enough there are now extra holes in the combustion chamber compare to a piccy below to see the diff. Hopefully these will be enough.
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Tried starting the engine today it very nearly ran Videos in this edition :) 21/09/02
| You will hear a pop and then a whining noise as the engine starts to wind up. Then the engine stopping i have some work to do in the combustion chamber i have some ideas to what the problem is
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| Oops what happens when you cant get enough air to mix with the fuel and you put a lot of fuel in :)
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You will need the
| divx
| 5.02 codec to view the above films.
| Pick the one on the left as the default option contains what is essentially spyware.
A little bit of motion caption of the igniter going 07/09/02
| This is the spark hust forming, before it confused the poor old camera.
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| The spark as best i could capture it, it also comes with quite a lound snapping sound.
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| Combustion chamber internals asssembled.
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He he i have propane they'll give it to any one :) 21/08/02
| Here we have the pressure regulator and some hoses, the hoses also have built in reverse flow bits built in one end.
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| Now we get to the good stuff the propane is the bottle on the right the bottle on the left is my argon gas bottle for me TIG welder which i may use for line purging.
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Latest devopements as of 08/08/02
| Kinda forgot this, thanks again wellsy for the machining n stuff. Me little lathe at home chokes on stainless stuffs
| Progress. Got the bits i need to modify the combustion chamber to run on gas, you'll see how it goes together in a minute.
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| A flash arrestor this may just stop me from getting into the darwin awards :) What it does is, if the gas ignites in the hose from the combustion chamber (bad) and travels up the hose to the gas bottle it detects this and blocks the pipe so the flame can go no further.
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| The top of the combustion chamber with fitting welded on, so it can be attached to above items.
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| All the bits assembled on top of the combustion chamber.
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| Here you can see the swirl inducers and the bit in the centre is where the gas comes in.
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| If you look really closely (easier on bigger picture) in the centre hole you can just make out the gas injector which directs the incoming gas (in six places) directly against the air flow ensure a good mix of gas and air.
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| And heres the finsihed modifications all welded up not me best welding but not bad considering havent touched me tig welder in around 6 months.
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Here are some pictures off the assembled unit.
| This is the jam jet. The horizontal pump was the avtur pump and the vertical pump is the oil pump and you can see the special home made pressure regulater :) The display on the top of the stand measure oil pressure and temp and water temp.
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| In this picture you can see more of the combustion chamber i am worried that it is a little short and may extend it. you can also see the jet pipe, it is hard to see but it does reduce the area too about 2/3 of the original pipe. The shiney tank top left is more water and a means to fill the water system up and it is shiney.
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| Here you can see the end of the combustion chamber with the car injectors in place.
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| The two tanks in the bottom are water and oil resesvoirs .
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| Here you can see the igniter box (top left of picture) all twelve jules of it and the ht cable going into the top of the combustion chamber. A source of ignition isnt a issue. You can also make out the water pump bottom left.
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| This picture show the inlet track a nicely and a better view of the home made pressure regulator worth its weight in gold the amount those swagelock fitting cost.
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| You can see the fuel rail and pressure valve. This is no longer in place as i couldnt get the avtur to light, i'm too much of a girl to heat/vapourise the fuel before injecting it. So i am modifying the end plate to take a normal fitting so i can supply propane into the system. Once i have the system running i may introduce avtur back into the system by using coils around the combustion chamber to vapourise the fuel then re-inject that into the system and turn of the gas.
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| Here you can see my old combuston chamber borrowed from a torch from pyestock the new chamber is only around half an inch at the top where the big pipe is and features a part that blows the gas into the airflow back from the source by 120 degrees from 6 differences places to ensure a gooding mixing of propane/air the gas come out of this nozzle just about where swirl inducers are.
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Some more general pictures of stuff
Contact me on address below if you have questions, i may be able to answer them.
remove the [at] and place with appropiate symbol ;)
jam[at]mr-orange.org
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