More in the saga of Thermo-Jam ( and other musings )

Moderator: Mike Everman

multispool
Posts: 125
Joined: Thu Jan 19, 2006 10:59 pm
Antipspambot question: 0
Location: UK

Re: More in the saga of Thermo-Jam ( and other musings )

Post by multispool » Mon Nov 28, 2011 7:32 pm

Thanks for the detailed explanation...

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Ghrey » Tue Nov 29, 2011 9:30 am

My brief water comment was not intended to be comprehensive, but thank you for that.

My greatest concern with methanol is a steady supply at a low cost. It is for my purposes the ideal fuel.

The little glue cans usually run dry, but I have pulled some pretty wet stuff out of some pieces of pipe....


Steam is a common occurrence wile I am tinkering.

It is interesting to note that I have adulterated Methanol with things like air tool oil and had the little jet burn through all of that as well, once started they seem rather un-picky. That having been said wile I have large propane tanks about the place I have no desire to run jets on it. I am currently working on liquid fueling exclusively.

A carburetor like device is in the works. Fuel from a pool is primitive and impractical for propulsion, or most other real world applications.

Cheers.
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

Mark
Posts: 10739
Joined: Sat Oct 11, 2003 10:14 pm

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Mark » Tue Nov 29, 2011 12:43 pm

(Just a few crumbs)
I know you can get away with using watery methanol sometimes, but it can also be quite annoying with some designs. In summer in Florida I have some simple jam jars and pint snorkeler that refuse to run while in the cooler months they ramp up nicely. And any water in the methanol only makes it worse. But on the other side of the fence I have a small tank with a short snorkelette that you can leave out for a month in the yard with an extemely loose fitting cap to keep the rain out and it will start every time on old fuel from previous and more previous runs. And one ridiculous design I put a Ghrey-long snorkel on my piglet tank with another opening at the base and very much like my little Logan, convection plays a large part in refreshing the air inside the combustion chamber. If you cock my little Logan at about a 45 degree angle with the side port low it will rev up sometimes 3 or 4 times without re-spritzing just by waiting a few seconds before relighting it. So if you have dry air and/or perhaps the methanol is gradually heated a little, water is not as much a hassle if you have constant snorkel convection introduced on your side to refresh or constantly maintain the fuel/air ratio from becoming too humid or rich.
Here's a few convection/chimney effect picture tidbits.
Attachments
Convection with a cardboard strip in a tube.gif
Convection with a cardboard strip in a tube.gif (8.65 KiB) Viewed 3513 times
Long shot.JPG
Convection Effect.JPG
Presentation is Everything

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Ghrey » Thu Feb 28, 2013 9:29 am

I built a convective device a wile back, it would buzz at the intake ports, until it would have a massive backfire. It cleaned the rafters well.


Here is a much more open design, I am working on, slowly.

http://youtu.be/rseO31fpYw0

http://youtu.be/rseO31fpYw0

Definitely a work in progress.

That valve I was working on, no good, that's how we learn.

Trying a different fueling approach, that odd growth on top of the new engine is an as yet non-functional part of it.

Cheers
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

Mike Everman
Posts: 4923
Joined: Fri Oct 31, 2003 7:25 am
Antipspambot question: 0
Location: santa barbara, CA
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Mike Everman » Thu Feb 28, 2013 2:39 pm

Very nice.
I really like the way that's going. If you can get one to run in full pjet mode without any intake acoustic property that's going to be amazing. You're almost there!
Mike
__________________________
Follow my technical science blog at: http://mikeeverman.com/
Get alerts for the above on twitter at: http://twitter.com/mikeeverman

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Er: More in the saga of Thermo-Jam ( and other musings )

Post by Ghrey » Fri Mar 29, 2013 5:18 pm

A few more variants on that last one:

http://www.youtube.com/watch?v=TWMrblrA ... e=youtu.be


Much larger CC.

More later.
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

Mike Everman
Posts: 4923
Joined: Fri Oct 31, 2003 7:25 am
Antipspambot question: 0
Location: santa barbara, CA
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Mike Everman » Wed Apr 03, 2013 9:15 pm

Loving it. I think you are continuing to break new ground with that! I wonder, would it quit when you get it running and slowly tip it up to vertical?
Mike
__________________________
Follow my technical science blog at: http://mikeeverman.com/
Get alerts for the above on twitter at: http://twitter.com/mikeeverman

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Ghrey » Thu Apr 04, 2013 8:31 am

The shorter ones are generally better able to run in either attitude, but It never occurred to me to move an operating engine.... I may have to try that.

Cheers
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Ghrey » Sun Apr 28, 2013 8:35 am

A little correction:

An "I" drill is .2720, I have no Idea where I got .290!

I seem to have posted this error in a few places. Sorry if I have caused any confusion.
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

PyroJoe
Posts: 1743
Joined: Wed Aug 29, 2007 5:44 pm
Antipspambot question: 125
Location: Texas

Re: More in the saga of Thermo-Jam ( and other musings )

Post by PyroJoe » Thu May 16, 2013 5:37 pm

Thanks for the dimensions.

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Ghrey » Tue Aug 06, 2013 9:59 am

Just did, or rather re-did, an inline version test.

In this order:

30" 1/2" pipe tail pipe.
1/2" to 2" bell adapter
2" x 8" pipe.
2" pipe cap with approx, 1/2" hole in it.



If ignited from the tail pipe end it buzzes ( ish ) along for a wile on methanol.

No pics or videos, sorry, limited time lately....
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Ghrey » Wed Aug 07, 2013 9:44 am

Video ....

The screws you see on the intake side do nothing but plug the holes they are in, parts re-use.

The fuel is Methanol.

http://youtu.be/82Y5ZUsskfQ


Cheers
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Brief Update

Post by Ghrey » Mon Jun 30, 2014 6:46 am

Mostly to busy to do anything jet wise these days. BUT.

For a variety of reasons, I have decided to build an upscaled unit;
scaleup.jpg
Bigger is sometimes necessary.

New CC components on left, Old size on right.

We are preparing to move on top of everything else, so it may be awhile, before there is thunder.


Cheers
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

Mike Everman
Posts: 4923
Joined: Fri Oct 31, 2003 7:25 am
Antipspambot question: 0
Location: santa barbara, CA
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Mike Everman » Mon Jun 30, 2014 5:31 pm

Nice to see it's not dead!
Mike
__________________________
Follow my technical science blog at: http://mikeeverman.com/
Get alerts for the above on twitter at: http://twitter.com/mikeeverman

Ghrey
Posts: 286
Joined: Fri Feb 15, 2008 8:41 am
Antipspambot question: 125
Location: Studio City, California
Contact:

Re: More in the saga of Thermo-Jam ( and other musings )

Post by Ghrey » Wed Aug 27, 2014 3:46 am

This has just been brought to my attention.

http://www.jetzilla.com/Vol01Num06/jetZ ... #Article_2


Odd that I had not seen it before.
In the process of moving, from the glorified phone booth we had to the house we have.

No real time to work on jets, more space, no time.

Life still complicated.

Post Reply