Search found 286 matches

by Ghrey
Tue Oct 03, 2017 6:10 am
Forum: Jet Vehicles, All Types
Topic: New Vehicle Forum
Replies: 8
Views: 6678

Re: New Vehicle Forum

Please stand by


But not to close...


:D
by Ghrey
Tue Oct 03, 2017 6:05 am
Forum: Jet Vehicles, All Types
Topic: Jam Jar Car Fun
Replies: 22
Views: 6469

Re: Jam Jar Car Fun

That little spinner is hilarious. It would probably be to hard to balance with a proper extractor on it....

Stop giving me crazy ideas :D
by Ghrey
Thu Jul 20, 2017 2:37 am
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 105913

Re: Mike's Build Log

That looks like a fun project. Have you thought about asymmetrical tube lengths? Intake and exhaust?
by Ghrey
Fri Jul 14, 2017 3:24 am
Forum: Jet Vehicles, All Types
Topic: Jam Jar Car Fun
Replies: 22
Views: 6469

Re: Jam Jar Car Fun

Always a crowd pleaser.
by Ghrey
Wed Sep 24, 2014 6:35 am
Forum: Off topic forum
Topic: Returning to the air
Replies: 0
Views: 1288

Returning to the air

I have been getting back to the R/C flying hobby lately, and I have derived the following definitions, and rules. Good launch: The plane has been heaved into the air at a good angle and in a safe direction. Launch; The plane has been heaved into the air. Takeoff; The plane has taken off from the gro...
by Ghrey
Wed Aug 27, 2014 3:46 am
Forum: Valveless pulsejet forum
Topic: More in the saga of Thermo-Jam ( and other musings )
Replies: 30
Views: 10091

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

This has just been brought to my attention.

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


Odd that I had not seen it before.
by Ghrey
Mon Jun 30, 2014 6:46 am
Forum: Valveless pulsejet forum
Topic: More in the saga of Thermo-Jam ( and other musings )
Replies: 30
Views: 10091

Brief Update

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
by Ghrey
Fri Apr 04, 2014 1:28 pm
Forum: Jet Vehicles, All Types
Topic: Jam Jar Car Fun
Replies: 22
Views: 6469

Re: Jam Jar Car Fun

That looks like great fun. I've got to try it.

I do have an ATV in the works, ( Aquatic Test Vehicle ), I'll be back.....

When I have fuel and time again.

Cheers.
by Ghrey
Wed Aug 07, 2013 9:44 am
Forum: Valveless pulsejet forum
Topic: More in the saga of Thermo-Jam ( and other musings )
Replies: 30
Views: 10091

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

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
by Ghrey
Tue Aug 06, 2013 9:59 am
Forum: Valveless pulsejet forum
Topic: More in the saga of Thermo-Jam ( and other musings )
Replies: 30
Views: 10091

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

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....
by Ghrey
Sun Apr 28, 2013 8:35 am
Forum: Valveless pulsejet forum
Topic: More in the saga of Thermo-Jam ( and other musings )
Replies: 30
Views: 10091

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

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.
by Ghrey
Thu Apr 04, 2013 8:31 am
Forum: Valveless pulsejet forum
Topic: More in the saga of Thermo-Jam ( and other musings )
Replies: 30
Views: 10091

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

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
by Ghrey
Fri Mar 29, 2013 5:18 pm
Forum: Valveless pulsejet forum
Topic: More in the saga of Thermo-Jam ( and other musings )
Replies: 30
Views: 10091

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

A few more variants on that last one:

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


Much larger CC.

More later.
by Ghrey
Thu Feb 28, 2013 9:29 am
Forum: Valveless pulsejet forum
Topic: More in the saga of Thermo-Jam ( and other musings )
Replies: 30
Views: 10091

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

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...
by Ghrey
Sat May 05, 2012 6:43 am
Forum: Pressure jet forum
Topic: Weres that DB5 with the 130rs ??
Replies: 10
Views: 8149

Re: Weres that DB5 with the 130rs ??

Thank you for that reminder; I have been doing some cleaning up lately and some new file boxes have turned up, I'l give them a look.