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Engine Running With No Spark Plug


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#1 mowinman2 OFFLINE  

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Posted January 16, 2013 - 03:23 PM

I shot this video 2 years ago at a local tractor show.  Wanted to share it with yall to help your noggin hurt for a while!  Enjoy

 


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#2 UncleWillie OFFLINE  

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Posted January 16, 2013 - 04:17 PM

OK I wanna know the answer now. It has to have something making spark. Or it is a secret diesel????



#3 Guest_rat88_*

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Posted January 16, 2013 - 04:21 PM

I have seen a few different versions of this. they were all sitting on some sort of box. I think that may have something to do with it, another engine in the box driving the engine on top. I have seen one where he even removes the carb.



#4 Guest_rat88_*

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Posted January 16, 2013 - 04:24 PM

I have had a 2 stroke turn into a diesel while doing a fast idle breakin after a ring job. it went to about 3000 rpm so I pulled the plug and it kept running until I opened the throttle


Edited by rat88, January 16, 2013 - 04:25 PM.


#5 mowinman2 OFFLINE  

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Posted January 16, 2013 - 04:41 PM

The old man wouldnt tell us his secret.  I can promise you it has nothing to do with the box.  The box was just a stand for it.  We took it off the box and set it anywhere we wanted.  The one thing he wouldn't let us do, was look in the spark plug hole.  Obviously there was simething in there that would give it away.  As you can see when he removes the plug while running, it didnt try and shoot it out.  There wasnt much compression at all, which tells me there is something of a makeshift "second head" underneath. 

 

No extra wires ran, no extra holes drilled from the outside.  Very cool man.  very cool display.  He also had  a small engine rigged to run off water.  It wasnt working at the time, but he had just came from another show and said it was running the whole show.  Didnt know what happened to it in transit. 


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#6 glgrumpy OFFLINE  

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Posted January 16, 2013 - 04:55 PM

When featured videos finish, more come up and was one with similar engine running without plug or carb and even plugged up the exhaust port for awhile. Pretty tricky! 



#7 John@Reliable OFFLINE  

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Posted January 16, 2013 - 05:30 PM

These miracle motor videos pop up often it seems :D



#8 UncleWillie OFFLINE  

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Posted January 16, 2013 - 06:06 PM

Has to be something hiding behind those shields. They don't look factory to me. I may be wrong though.



#9 wilberj OFFLINE  

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Posted January 17, 2013 - 08:06 PM

Glow plug?



#10 IamSherwood OFFLINE  

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Posted January 17, 2013 - 08:21 PM

Neat. Thanks for sharing that video.

you've got me scratching my head...



#11 Texas Deere and Horse OFFLINE  

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Posted January 17, 2013 - 10:11 PM

I figure it's some kind of glow plug and nitro mixed fuel just like we used in our R/C stuff.



#12 MH81 OFFLINE  

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Posted January 17, 2013 - 10:17 PM

I am thinking hot bulb ignition. I,d say it was hidden in the metal box.

#13 mowinman2 OFFLINE  

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Posted January 17, 2013 - 10:28 PM

I am thinking hot bulb ignition. I,d say it was hidden in the metal box.

 

Whats a hot bulb ignition?



#14 MH81 ONLINE  

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Posted January 17, 2013 - 11:59 PM

Whats a hot bulb ignition?


http://en.wikipedia....Hot_bulb_engine

Four-stroke engines
Air is drawn into the cylinder through the intake valve as the piston descends (the induction stroke). During the same stroke, fuel is sprayed into the vaporizer by a mechanical (jerk-type) fuel pump[6] through a nozzle. The air in the cylinder is then forced through the top of the cylinder as the piston rises (the compression stroke), through the opening into the vaporizer, where it is compressed and its temperature rises. The vaporized fuel mixes with the compressed air and ignites primarily due to the heat of the hot bulb generated while running, or heat applied to the hot-bulb prior to starting.[7] By contracting the bulb to a very narrow neck where it attaches to the cylinder, a high degree of turbulence is set up as the ignited gases flash through the neck into the cylinder, where combustion is completed. The resulting pressure drives the piston down (the power stroke). The piston's action is converted to a rotary motion by the crankshaft-flywheel assembly, to which equipment can be attached for work to be performed. The flywheel stores momentum, some of which is used to turn the engine when power is not being produced. The piston rises, expelling exhaust gases through the exhaust valve (the exhaust stroke). The cycle then starts again.
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