mark I am not worthy

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mk
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Re: mark I am not worthy

Post by mk » Thu Aug 19, 2004 6:36 pm

Steve wrote:BTW, has anyone tried running a lip fed engine on it's side?
Yes. My propane lipfeed combustor also ran being in horizontal position. I tried one time only. But starting was a bit "more difficult".

I could draw the dimensions if anyone would like to have them.
Last edited by mk on Thu Aug 19, 2004 6:59 pm, edited 1 time in total.
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Re: mark I am not worthy

Post by larry cottrill » Thu Aug 19, 2004 6:49 pm

mk wrote:
Steve wrote:BTW, has anyone tried running a lip fed engine on it's side?
Yes. My propane lipfeed combustor also ran on horizontal position. I tried one time only. But starting was a bit "more difficult".

I could draw the dimensions if anyone would like to have them.
Marten -

I for one would love to see it.

L Cottrill

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Re: mark I am not worthy

Post by Stephen H » Thu Aug 19, 2004 9:32 pm

me to!!

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Re: mark I am not worthy

Post by PulseDuuude » Thu Aug 19, 2004 9:39 pm

Marten,

Yes please!
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Re: mark I am not worthy

Post by steve » Fri Aug 20, 2004 12:32 am

how simple could we make such a lip fed system? could I put the tip of my blowtorch next to the intake of one of my jars and light it? oooooo.. sounds like fun I'm gona go try it ......
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Re: mark I am not worthy

Post by Bruno Ogorelec » Fri Aug 20, 2004 4:57 am

steve wrote:how simple could we make such a lip fed system?
Here's how Reynst did it. He enclosed the cone of the 'jar' with a fuel chamber and let gaseous propane in. The 'jar' sucked propane from the narrow slit between the gas chamber and the combustion chamber.

What I definitely not understand is letting air in, into the gas chamber, from below. To me it looks like a bomb recipe, rather than fuel feed.
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Re: mark I am not worthy

Post by Mike Everman » Fri Aug 20, 2004 2:05 pm

bruno wrote:What I definitely not understand is letting air in, into the gas chamber, from below. To me it looks like a bomb recipe, rather than fuel feed.
I think this is one of those cases where the mix is too rich at the top of that fuel annulus. what you're saying would be a concern if there was mixing going on in the annulus, but the mix is only right in a small area at the bottom of the annulus, where there is nothing to touch it off. I like the approach, the opening at the bottom there makes the annulus non-resonant. Hmmmmm
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Re: mark I am not worthy

Post by Bruno Ogorelec » Fri Aug 20, 2004 2:47 pm

Mike Everman wrote:
bruno wrote:What I definitely not understand is letting air in, into the gas chamber, from below. To me it looks like a bomb recipe, rather than fuel feed.
I think this is one of those cases where the mix is too rich at the top of that fuel annulus. what you're saying would be a concern if there was mixing going on in the annulus, but the mix is only right in a small area at the bottom of the annulus, where there is nothing to touch it off. I like the approach, the opening at the bottom there makes the annulus non-resonant. Hmmmmm
Mike, either you're very bright or I'm very stupid or it's a bit of both. It's so obvious now...

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Re: mark I am not worthy

Post by Anthony » Fri Aug 20, 2004 2:52 pm

Mike Everman wrote:
bruno wrote:What I definitely not understand is letting air in, into the gas chamber, from below. To me it looks like a bomb recipe, rather than fuel feed.
I think this is one of those cases where the mix is too rich at the top of that fuel annulus. what you're saying would be a concern if there was mixing going on in the annulus, but the mix is only right in a small area at the bottom of the annulus, where there is nothing to touch it off. I like the approach, the opening at the bottom there makes the annulus non-resonant. Hmmmmm
What's an annulus?

[french speaking and lack of knowledge excuse ON]
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Re: mark I am not worthy

Post by Viv » Fri Aug 20, 2004 2:55 pm

Anthony wrote:
Mike Everman wrote:
bruno wrote:What I definitely not understand is letting air in, into the gas chamber, from below. To me it looks like a bomb recipe, rather than fuel feed.
I think this is one of those cases where the mix is too rich at the top of that fuel annulus. what you're saying would be a concern if there was mixing going on in the annulus, but the mix is only right in a small area at the bottom of the annulus, where there is nothing to touch it off. I like the approach, the opening at the bottom there makes the annulus non-resonant. Hmmmmm
What's an annulus?

[french speaking and lack of knowledge excuse ON]
Oh damn I had to bit my tong so hard:-)

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Monsieur le commentaire

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Re: mark I am not worthy

Post by Mike Everman » Fri Aug 20, 2004 3:10 pm

Hi, Anthony. An annulus is the region lying between two concentric surfaces. A cylindrodonutoidal volume. And no, cylindrodonutoidal is not a word! ;-)
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Re: mark I am not worthy

Post by Bruno Ogorelec » Fri Aug 20, 2004 3:34 pm

It will probably be easier to remember if you know that it is derived from 'anus'.

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Re: mark I am not worthy

Post by Viv » Fri Aug 20, 2004 4:51 pm

Mike Everman wrote:Hi, Anthony. An annulus is the region lying between two concentric surfaces. A cylindrodonutoidal volume. And no, cylindrodonutoidal is not a word! ;-)
The region lying between heavon and the sewer:-)

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Re: mark I am not worthy

Post by mk » Fri Aug 20, 2004 5:36 pm

So here's the drawing...

As you can see I'm not using this annulus mixing chamber.
I simbly bent the edges of the second top plate for getting a gap to provide propane lipfeed.
The combustor is made out of 1mm mild steel (I named it "black steel" in several posts, because it's called "Schwarzblech" in german).
I start it like a jam jar, pouring a bit of methanol or ethanol in it. As it has started running, I turn on propane (100%, no special mixture) flow, using a small 400 ml bottle and a needle valve. Bottle and combustor are simply connected by a suitable hose.
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Re: mark I am not worthy

Post by Bruno Ogorelec » Fri Aug 20, 2004 5:54 pm

Marten, great stuff! Have you tried putting a pipe near the exhaust to get it to resonate? You build interesting things.

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