Search found 177 matches

by evildrome
Mon Oct 14, 2013 3:05 pm
Forum: Valved pulsejet forum
Topic: "Pulsejet Heater" plans on ebay
Replies: 6
Views: 4723

Re: "Pulsejet Heater" plans on ebay

Hi All,

I think its valved. Do a Google image search for 'Lennox Pulse Furnace'. Lots of good photos, some of which are of the 'Air Flapper & Gasket' which is sold as a service part. It looks very like a simple pulse jet valve a'la the type seen in model airplanes.

Cheers,

Wilson.
by evildrome
Thu May 17, 2012 5:12 pm
Forum: Valved pulsejet forum
Topic: valve casting
Replies: 3
Views: 1683

Re: valve casting

Hi Mike, I'm well. Suffering from raging poverty but other than that I'm fine. I'm most proud of the wax master & RTV mould in this post http://www.pulse-jets.com/phpbb3/viewtopic.php?f=2&t=6534#p75600 That was real tough. The casting bit has had its moments but the master took months of experimenta...
by evildrome
Tue May 15, 2012 11:35 pm
Forum: Valved pulsejet forum
Topic: valve casting
Replies: 3
Views: 1683

valve casting

Hi All, I have abandoned my original idea and modded it a bit. I was going for a dual one piece matchplate pattern but that was too ambitious. I made a matchplate sure enough but with individual elements. http://www.wilsonlogan.com/valve-casting.htm So... another 4 to cast and a valve carrier assemb...
by evildrome
Tue Feb 28, 2012 5:15 am
Forum: Valved pulsejet forum
Topic: Identify the mystery object
Replies: 9
Views: 3058

Re: Identify the mystery object

Hi Mark, Thanks, I had forgotten about that. Mr. Metiz, the metal will be aluminium. The length is about 100mm (4 inches). I'm aiming for a jet big enough to power a bike or cart, say 50 - 75lbs thrust. The idea is very much along the lines of a Solarjet. I will be making a valve holder to hold the ...
by evildrome
Mon Feb 27, 2012 7:29 pm
Forum: Valved pulsejet forum
Topic: Identify the mystery object
Replies: 9
Views: 3058

Re: Identify the mystery object

Nice Mr. Metiz! Almost absolutely correct. Its a pattern, not a mould. But I'll accept that that's what you meant. Your prize is the first set of valves to come from this pattern. Its actually a master pattern. An RTV daughter is cast and then a resin copy & that is what is used to make the sand mou...
by evildrome
Sun Feb 26, 2012 11:46 am
Forum: Valved pulsejet forum
Topic: Identify the mystery object
Replies: 9
Views: 3058

Identify the mystery object

Hi All,

I have been busy recently (see attachment).

The first person to correctly identify the object will win a prize related to the object itself.

Cheers,

Wilson.
by evildrome
Mon Sep 12, 2011 3:35 pm
Forum: Gas turbine forum
Topic: Horde of Aerospace materials quick sale
Replies: 1
Views: 2095

Re: Horde of Aerospace materials quick sale

Hi All,

Well, a bit of a reprieve seems to be underway. My friend can't get a price he likes for the scrap so it may all be available for a while longer.

However, until he gets a price, I don't know how to price what I have set aside.

Watch this space...

Cheers,

Wilson.
by evildrome
Thu Sep 08, 2011 11:01 am
Forum: Gas turbine forum
Topic: Horde of Aerospace materials quick sale
Replies: 1
Views: 2095

Horde of Aerospace materials quick sale

Hi All, Probably only of interest to UK based folk.... My friend has approx 750kg of aerospace alloys (nickel & titanium) and turbine parts retained for QA purposes which are now to be disposed of. I didn't get as long a look as I would have liked but I did see bar stock, fasteners and some huge tur...
by evildrome
Tue Dec 07, 2010 11:03 pm
Forum: Valved pulsejet forum
Topic: can a jet be sqaure or rectangle shaped
Replies: 5
Views: 2427

Re: can a jet be sqaure or rectangle shaped

Short answer... yes. I've done it.

Doesn't work that well...

http://www.youtube.com/watch?v=3LInWFmSWB4


Cheers,

Wilson.
by evildrome
Sun May 16, 2010 10:08 am
Forum: Valved pulsejet forum
Topic: Valve carriers
Replies: 2
Views: 1819

Re: Valve carriers

Woah... deafened by the response.... not. I take it no one has a 6 inch PJ ? What do you think would be more sensible, size wise? 4 inches? I just went for 6 inches as I had envisaged the use of such a jet on bikes and carts and I think less than 6 inches is going to be a waste of time from a thrust...
by evildrome
Fri Apr 30, 2010 12:15 am
Forum: Valved pulsejet forum
Topic: Valve carriers
Replies: 2
Views: 1819

Valve carriers

Hi All, I am currently making a pattern to cast valve carriers for a 6" size PJ. They wil be modelled after the Solarjet/Argus valve carriers. I can make the carriers and maybe valves but will not have time to proceed much further. Does anyone want to collaborate on this? I'd say that a pre-requisit...
by evildrome
Tue Jan 20, 2009 6:44 pm
Forum: Valved pulsejet forum
Topic: PULSE 3
Replies: 13
Views: 5913

Re: PULSE 3

I agree with Grim. Now that you've fixed the tail pipe issue the valves themselves appear to be suspect. They do appear about twice as long as one would expect. I think with a redesign of the valves & valve plate you can make this work. Have a look at the pics below of a valve carrier I cast. The he...
by evildrome
Mon Dec 01, 2008 12:04 am
Forum: Off topic forum
Topic: OT: Tesla Turbines
Replies: 0
Views: 1265

OT: Tesla Turbines

Hi All, I've been trying to design a Tesla Turbine that can be made, on the cheap, with limited tools for the purpose of fun and serious experimentation. http://uk.youtube.com/watch?v=5ujnj3GwEUI http://uk.youtube.com/watch?v=eh7CjvB_C8Y The turbine is designed to be buildable by the amateur. Many o...
by evildrome
Sat Sep 06, 2008 8:53 pm
Forum: Valved pulsejet forum
Topic: Robert Maddox
Replies: 6
Views: 4603

Re: Robert Maddox

Hi Mike, I am currently working on a set of 4 inch valve holders suitable for a 6 inch diam pulse jet. In the picture you can see my first cast valve holder which is about 9" and is for a 12" engine. One of my friends has offered the use of a programmable turret press so I may try and make these val...
by evildrome
Sun Aug 03, 2008 10:09 pm
Forum: Valved pulsejet forum
Topic: Robert Maddox
Replies: 6
Views: 4603

Re: Robert Maddox

Hi Mike, Well, I've totally changed jobs. I was an IT consultant and now I make pipeline inspection cameras in a small industrial unit. Not as profitable as the old job but way more satisfying. This jet of Mr. Maddox's has intrigued me. As you may remember I started down the path of a Solarjet type ...