Search found 16 matches

by Ape
Sun Oct 26, 2008 11:12 am
Forum: Valved pulsejet forum
Topic: Mode 1/0
Replies: 45
Views: 2759734

Re: Mode 1/0

I know it's probably just me, but isn't that strip rather thick? 0.1" just seems really. . well. . thick.
And yes, For Dummies would be nice. :D
by Ape
Sun Oct 12, 2008 5:11 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

Viv ; yes, those are the ones, same scan. I have been getting through a few pages, and I realized I should just do shorter stints, thanks for trying, tho ;D Mark; yeah, yeah, I know reamers, no worries, and its not, Im ashamed to admit, because I don't know how to do it proper, it's that I was press...
by Ape
Sat Oct 11, 2008 9:04 am
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

Mark: Nope, it's 6262-t6 alu, I've just been buffing it for like ten minutes at 2k rpms :D And yeah, there might have been room for one more hole there. . next time. Tim: I think(hope) I have access to spring steel, but word from R&D haven't gotten through to me yet ( Not MY R&D unit, but the compan...
by Ape
Fri Oct 10, 2008 8:11 pm
Forum: Valved pulsejet forum
Topic: Ba-da boom
Replies: 5
Views: 3653

Re: Ba-da boom

Haha, so true! Everybody wants to go to heaven, but noone wants to die. On a lighter note, I think it's the perpetuum mobile that's considered irrational. I mean, the idea of building one. Perpetual motion IS. Energy can't be lost, but it might be in a form that we can't use, and being us, we call i...
by Ape
Fri Oct 10, 2008 7:10 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

Oh, and Tim, btw, I almost forgot. The venturi-thing. heh. I thought, because I failed to read up on the subject matter, that the venturi was the nozzle-system, through which fuel was delivered. Basically, a PJ'ish name for the carbeuretor-like system employed. I have since rectified my mistake :D S...
by Ape
Fri Oct 10, 2008 6:53 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

Finished the actual intake today. Got it just right at 40 by 40mm. Seven 5mm holes will have to suffice. Or it's back to the drawing board :wink: Tim, I think not. Your efforts have lead to a completed jet, while all I have to show for mine is an intake. Valves and valve retainer plate are basically...
by Ape
Wed Oct 01, 2008 5:18 pm
Forum: Tools and Construction
Topic: Is a lathe a good thing?
Replies: 9
Views: 4327

Re: Is a lathe a good thing?

A lathe is a very good thing! Basically, a lathe is The Thing. With a lathe and some skill, you won't even need a mill, since, by setting up your lathe proper, it will do the milling jobs just fine. Now, I know this guy has got some serious hardcore skills, and that there's prolly very, very, very f...
by Ape
Mon Sep 29, 2008 4:37 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

haha. last post shows clearly how much of newbie I am ;D
by Ape
Fri Sep 26, 2008 1:33 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

hehehe, the tip, yeah. Well, I was planning to shorten it somewhat, flatten it, and mount the venturi there, but thats not gonna happen, have decided to have the venturi comming in from the side. And then I thought, you know, what the heck, why not just leave it like that? I'm not really old enough ...
by Ape
Thu Sep 25, 2008 9:25 pm
Forum: Valved pulsejet forum
Topic: dynamic modeling of a strip valve
Replies: 144
Views: 2855997

Re: dynamic modeling of a strip valve

yes, that makes sense.. .. thinking about it, I realized I assumed cycles meant no flow, but pulses instead, and then just dismissed dfr>1 as an impossibility. Cheers p.s. I'm no good at math, but the graphs and your comments makes it almost understandable to me, and in spite of my expectations when...
by Ape
Thu Sep 25, 2008 8:05 pm
Forum: Valved pulsejet forum
Topic: dynamic modeling of a strip valve
Replies: 144
Views: 2855997

Re: dynamic modeling of a strip valve

This is propably a rather silly question, showing my complete lack of understanding of what you're trying to relate here, but, well, here goes ; How can dfr be >1?
What did I miss? :P
by Ape
Thu Sep 25, 2008 4:31 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

starting to get the feel of the build

I had two hours to spare today, and decided to spend them making a mockup of the intake, just to get an idea of what I wanted, shapewise. Please bear in mind that it IS just that, it's not exactly right yet. But overall, I think it's gonna be something pretty much like it, just smaller, ofc. :D Any ...
by Ape
Fri Sep 12, 2008 2:11 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

Seeing as how you already build one, Tim, I still consider myself more of a newbie than you! :D Well. . I'm not going for small because I think it's easier, but because the project calls for a size that'll fit on the shelf in my formans office , that already holds the projects of former apprentices....
by Ape
Thu Sep 11, 2008 3:53 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

hehehe, I thought popular belief was that frequency was a matter of diameter first, length second :D Anyhoo, I could make a conical fit that would propably hold the pieces well enough together, if I first applied some serious pressure to it. And as long as I don't weld or solder or whatnot, but stic...
by Ape
Thu Sep 11, 2008 2:40 pm
Forum: Valved pulsejet forum
Topic: I think I need help. A lot. Really.
Replies: 32
Views: 6574

Re: I think I need help. A lot. Really.

Ah. Bummer. I have been reading a bit more on the subject, and even though I don't really get physics, it seems to me that a pulsejet doesn't sound right because it runs proper, it runs proper because it sounds right (oversimplified, and only part of the truth, of course, but still.). Is that comple...