Hi folks, i has tested the engine without priming with ether or dieselfuel with ether when the engine ran at etherless fuel. I tried with electric drill to start up the engine. But the drill is not fast, 1400 rpm only. I learned out the gasoline mixed in kerosene will reduce viscosity who can give better atomizing in the carburator/engine.

In the first movie the engine ran at fuel who has 1 part gasoline, 1 part kerosene, 1 part 15W-50 motoroil.
In the second movie the engine ran at fuel who has 40% kerosene, 30% gasoline, 30% 15W-50

And the next movie the engine ran at 3 parts kerosene, 1 parts gasoline ,2 parts motoroil 15W-50 , and the engine was handstarted with priming the engine with ready mixet dieselfuel with ether.

Now, do you have comments about starting the engine without priming

The etherless fuel was mixed after the fuel recipe from old books from USSR

[youtube]http://www.youtube.com/watch?v=uxfZ3OT3onU[/youtube]

[youtube]http://www.youtube.com/watch?v=G_ZZAqgx2hA[/youtube]

[youtube]http://www.youtube.com/watch?v=UYOdh5b8cNg[/youtube]

Edit: Corrected lack of text..

It seems you could leave compression settings alone, and adjust the engine using fuel jet only.

I will just say, that is so neat. Cool!
I need to mix up some etherless fuel and give it a go in one of my engines too.
Thanks for all the information about this too. I know some others contributed too, so I thank them as well.
Our American gasoline tends to have ethanol in it, so I don't know if that would be an issue or not.
I was also wanting to try some Coleman Camp fuel (naptha) out and see if it works Ok instead of gasoline too.

My largest compression ignition engines are a Fox .45, a MVVs 10cc and a Super Tigre G90. The fuel should work out well in the bigger engines for sure. Plus it would be much less in cost as well.

My engine is under 2,5 ccm long stroke engine. With bigger engine, it will not be a problem since the engine has more volume to comprime the air to ignite fuel drops than my engine with little volume.

Same i am not sure how it works with american gasoline, take a research to learn out how it will work in the engine. But probably the gasoline works as a viscosity reduction in the kerosene and make it easier to atomize the kerosene, it is the kerosene who has excellent autoignition compared with the gasoline.

I noticed that fuel consumption is slightly less than the model diesel fuel with ether, but I have not measured to be sure it really is the reduction in consumption.

There is very little difference in compression ratio either fuel has ether or not..

Naphta would IMHO be a very good gasoline substitute, where gas without ethanol is not available. It has low octane, evaporates very cleanly, and burns readily. Anyone know the SIT of naphta?
Forget the question. It is 550°C, so the mix relies on the kero to ignite. Gasoline needs only 280°C for self ignition.

Nice experiment , and well done , its got me thinking

Bummer on the naptha, I hadn't thought about the SIT with it, until you mentioned it.
Thanks

Darn , you cant run castor with gasoline , I need castor in Controline

Im rough with motors and need the extra protection

There is something one can add to get castor oil to mix with gasoline, but I forget what it is at the moment.
Klotz Benol is supposed to mix well with gasoline or methanol. They added some ingredient to it.
http://www.klotzlube.com/techsheet.asp?ID=2

But mineral oil has a unique trait where it can moderate the combustion process when the engine is running. That might be a key factor when mixing up kerosene, gasoline and oil to run in a model compression engine. But castor oil does not do this. Many years ago the Drone engines used 75% ether and 25% mineral oil for their fuel. The mineral oil moderated the combustion process otherwise all that ether would quickly damage a engine.

So one would have to mix up a batch with Klotz Benol to see what happens. Or use the secret ingredient that lets castor oil mix with gasoline and kerosene.

Yes you can. Castrol R-30 or R-40 is Castor based and is blended to mix with petrol and is at least soluble in Kero in standard diesel fuel. Try a motor bike shop that caters to the Vintage racing crowd.

Ray

I notice that Redline 70 Weight oil they use in Top Fuel engines

( at 1000 HP per cylinder)


has a flashpoint of 220 C and castor has a flash point of 229C

Well my Silver Swallow is not quite 1000HP per cyl , but will be a good test mule for Gasoline Kero and Motor oil ,

When my engine ran at motoroil, there is still motoroil out of exhaust. Not burned together with kerosene/gasoline. When i mixed the kerosene and castor oil, it can not mix, then i added a bit Klotz Benol castor oil, it will mix castor oil and kerosene togheter. Next time i will take a test with castor oil in kerosene/gasoline fuel and take a movie of the engine running with castor oil.

And gasoline is not so dry as methanol or ether there is still lubrication properties in gasoline. Nothing to be worried

123 Cat

Ray is on the money with R 30 and R 40.

As an alternative option, I have used Fuchs Castorene Racing 40 in my glows and diesels. Not a cheap lubricant .. but good. It's made to mix with petrol.

It works perfectly with diesels. Throws a sediment (small white flakes) when mixed with methanol, no sweat, I just strain it out (good old Mr Funnel).

Just another option for you.

Any castor oil intended for gasoline engines will blend with kerosene, gasoline, and many other petroleum fuels above approximately 35°F. If in doubt, check the manufacturer's spec.

I did get a PAW to run briefly with just gasoline years ago in the etherless thread. I didn't investigate it much further. This looks like it's worth trying. Thanks Jens!

Not to nit pick, but is that a heavy 'knock' I hear in all three movies?

And it doesn't sound like the engine revs out and runs smoothly - but that may be the type of sound recording.

Cheers.

There is a problem with sound recording in the digital photo camera. My neighbour told me the engine ran smoothly since i am deaf man. Today i learned out there is "knocking" in sound with head phone connected to computer.. I will take a new movie with other digital photo camera and compare with the old sound from former digital photo camera.

My engine is a slow running engine up to 4500-5000 rpm due long stroke engine and low timing, also not a hi-reving engine.

I took a new test with other digital video camera and compared with the old sound i previous movies.. there is not "knocking" in sound in new movie as i can listen with head phone connected to computer. Can you tell to me since i am deaf man about there is still "knocking" in the engine?

[youtube]http://www.youtube.com/watch?v=8MmrM4b_Ivs[/youtube]

I took a test running the engine with castor oil instead motor oil in fuel

How to mix the kerosene into castor oil.. The fuel recipe is 1 part kerosene, 1 part gasoline, 1 part castoroil + a bit little Klotz Benol castor oil to make kerosene/gasoline mixed into the castor oil. I am not speaking english in movie since i am deaf (speaking norwegian only, but not in movie) hence i am writing in paper at english for you.

[youtube]http://www.youtube.com/watch?v=udjaMPg_wO4[/youtube]

And then i ran the engine with castor oil in fuel without ether.

[youtube]http://www.youtube.com/watch?v=g84zTXjHr24[/youtube]

"Can you tell to me since i am deaf man about there is still "knocking" in the engine?"

Honestly, the engine does sound to me like its gone 'hard' or over the top with compression and the last movie shows rather dark oil - an indicator at times of too much compression.

The weird intermittent  'knock' sound seems to be still there but don't trust just one opinion gained from over the internet, I would like to hear from others here what  they think also!

Thanks mate.<br type="_moz"/>

I got message from AMB: sounds fine no static no hash no knocks sounds normal martin

When i tried to reduce compression, the engine will die... hence black oil in castor oil.. Note: in all fuel i maked without ether are IPN not added who i can reduce ignition lagg and reduce compression a bit..

Next time i will take a test run with IPN added and see what i get in results..

Yep it's not a happy diesel! I'd guess that the "knock" is the rod big and little ends pounding themselves into another shape.

Ray

Recyled flyer I did not notice it on run #3 may not be familiar that that engine, no muffler maybe my ears not that keen or have not heard the knock sound before, to compare to martin

That knock can be the drumming on the aly mount and the sides of the wooden mount below , Ive got a plane which drums or Knocks real bad , that Im actually making a rubber isolator mount today to see if it makes a difference , even with a good glow it bangs, its got a hollow foam wing covered with brown paper


5 noise sources

, Drumming ,( airframe )

Venturi ,

Exh ,


prop

Mechanical slop ( engine )

Vibes , some of mine vibe bigtime when they are burping , the cylinder blurrs, its the only way to fly .

And on rubber the engine will probably vibe a lot more

I have to say Jens that you are certainly doing great stuff for someone with a hearing disability, I would never have guess that from all the great engine work I've seen from you in other threads in this forum.

As for the engine runs in this thread they all do sound a bit labored down, or missing, to me with the occasional knock. But I also know from making my own movies that the engines do sound better in real life compared to what they do in movies. In my own movies the engines sound a bit over-compressed even though I did the tuning in the first place. Perhaps you could make a movie for the same engine with traditional ether fuel (and IPN) and then one could more easily compare the performance of the non-ether fuels.

I don't mix my own fuel anymore since I've found a local source that will mix small batches to specification with both ether and IPN. To me both ether and IPN or DII are important in order to get that smooth, non-missing, running on moderate compression settings that one is after. While engines can certainly run on other fuels, they do favor the older hit and miss running style.