Search found 28 matches

by m1tch
Sat Aug 29, 2009 1:44 pm
Forum: Valveless pulsejet forum
Topic: Mitch's Newbie Valveless jet thread
Replies: 8
Views: 3063

Re: Mitch's Newbie Valveless jet thread

The diagram above shows the dimentions in terms of D for an intake being at the front, can I use the same dimentions but put the intake at the back of the CC? The lockwood is a linear jet, which is to say that the inlet comes in at one end and the exhaust goes out the other. No matter what you do i...
by m1tch
Sat Aug 29, 2009 9:56 am
Forum: Valveless pulsejet forum
Topic: metal jam jar experiments
Replies: 458
Views: 169304

Re: metal jam jar experiments

What is the size of the CC? it might still be written on it lol but it might have burnt off! good going with the threaded pipe idea :)
by m1tch
Sat Aug 29, 2009 9:55 am
Forum: Valveless pulsejet forum
Topic: Mitch's Newbie Valveless jet thread
Replies: 8
Views: 3063

Re: Mitch's Newbie Valveless jet thread

Im thinking perhaps using wire to suspend the pulsejet, that way its firm, but can handle the vibrations lol Would a copper pipe be ok for the inlet? or would it melt quickly? The diagram above shows the dimentions in terms of D for an intake being at the front, can I use the same dimentions but put...
by m1tch
Sat Aug 29, 2009 9:20 am
Forum: Valveless pulsejet forum
Topic: Mitch's Newbie Valveless jet thread
Replies: 8
Views: 3063

Re: Mitch's Newbie Valveless jet thread

Ok im sure I can make a rig that holes the pulse jet underwater or something :) might even be able to ironocally use a jam jar to cool it and perhaps a spacer on the metal lid to stop it floating :)
by m1tch
Fri Aug 28, 2009 3:56 pm
Forum: Valveless pulsejet forum
Topic: Mitch's Newbie Valveless jet thread
Replies: 8
Views: 3063

Re: Mitch's Newbie Valveless jet thread

Yeah I will make sure its all safe, a pulse jet that doesn't pulse is a pipe bomb, so I will be careful, I will need to re-think my intake idea a bit, but this is just a work in progress, I am trying to use some dimentions from this diagram: http://i93.photobucket.com/albums/l49/m1tch_2006/planforpu...
by m1tch
Fri Aug 28, 2009 1:24 pm
Forum: How to improve this site
Topic: Site layout
Replies: 21
Views: 6270

Re: Site layout

Could there possibly be a projects section added to the site, it would make it easier to separate the ongoing builds from the questions/topics being asked :)

Just an idea :)
by m1tch
Fri Aug 28, 2009 11:54 am
Forum: Valveless pulsejet forum
Topic: Mitch's Newbie Valveless jet thread
Replies: 8
Views: 3063

Mitch's Newbie Valveless jet thread

Hi everyone, I thought I post up a thread to show the development of a newbie valveless pulsejet, I will try and post up as many tests and ideas as I can and comment on how I got certain bits lol Here is my first test with a jamjar jet, I did have a larger on, but it has a plastic lid that melted! o...
by m1tch
Thu Aug 27, 2009 11:03 pm
Forum: Valveless pulsejet forum
Topic: Really basic capped PJ
Replies: 6
Views: 1999

Re: Really basic capped PJ

Amazingly this pulse just looks almost exactly like Ghrey's metal jam jar pulse jet lol just with a hole rather than a sleave over it lol would look awesome on a mantle peice lol

Should I try and make that as my 2nd pulsejet? (still actually need to build one lol)
by m1tch
Thu Aug 27, 2009 3:38 pm
Forum: Valveless pulsejet forum
Topic: metal jam jar experiments
Replies: 458
Views: 169304

Re: metal jam jar experiments

Not sure where to put this, but I just found a cool video regarding the jam-jar jet, it adds a diffuser using a plumbing part to make it much more powerful:

http://www.youtube.com/watch?v=fciwFk0IfF8

it might help with yours :)
by m1tch
Thu Aug 27, 2009 2:31 pm
Forum: Valved pulsejet forum
Topic: Newbie valves - please be gentle!
Replies: 14
Views: 3767

Re: Newbie valves - please be gentle!

I tried the electro etching technique many years ago, and it seemed to work well for very thin materials. Somewhat thicker sheet pitted at the etch , naturally I used a small battery charger, but according to Bruce Simpson on the site you referenced, you can use a single car or motorcycle battery a...
by m1tch
Thu Aug 27, 2009 1:34 pm
Forum: Valved pulsejet forum
Topic: Newbie valves - please be gentle!
Replies: 14
Views: 3767

Re: Newbie valves - please be gentle!

Ah ok cool, I will have a look, it looks like the nearest one is somewhere in London lol Yeah I checked out the electro etching technique, but it looks a bit complex and as you say, it might not even work lol I will check if we have a dremel kind of thing somewhere in the garage. What size is yours?...
by m1tch
Thu Aug 27, 2009 12:09 pm
Forum: Valved pulsejet forum
Topic: Newbie valves - please be gentle!
Replies: 14
Views: 3767

Re: Newbie valves - please be gentle!

Hello M1tch I'm from the UK too. I'm in a similar position - i've only got simple hand tools and no welding gear. My no weld pulsejet is almost finished - but i'm guessing its going to take alot of tweaking before it actually runs. I got 0.006" stainless shim steel and some mild steel tubing from m...
by m1tch
Thu Aug 27, 2009 11:42 am
Forum: Valveless pulsejet forum
Topic: Please put your "I am new and need help" question here.
Replies: 374
Views: 1744804

Re: Noob .. Alcohol fuel pump

I want to make a valveless pulse just that will run on Methanol .. I've done some searching and have not ended up with much material. I am a tool and die maker so making the engine is just a matter of doing it. What are you using for delivering liquid to the engine? Thanks .. K It seems that most p...
by m1tch
Thu Aug 27, 2009 9:37 am
Forum: How to improve this site
Topic: Site layout
Replies: 21
Views: 6270

Re: Site layout

Is there any chance of adding a 'remove top frame' buttom to remove the pulse-jets.com banner with the smaller links at the bottom, when im in the forum I have already clicked though, so don't really need the naviation to go to the forum again lol :) just a thought (Im meaning the frame at the very ...
by m1tch
Thu Aug 27, 2009 9:34 am
Forum: How to improve this site
Topic: New Members
Replies: 49
Views: 24833

Re: New Members

Hi there, I seem to have missed this section when I joined! oop! lol My name is David, im 22, I live in the UK and work in a bank - need some more excitement in my life lol Im into Drag racing and do race down Santapod when I can :) the aim is to run a pulsejet dragster down there one day, but I nee...