Search found 847 matches

by tufty
Thu Aug 31, 2017 4:17 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 283705

Re: Odds and ends

Yeah, the language barrier is a big problem, mostly what you write will be translated to chinese via google translate, and the reply translated back to 'murican via google translate - machine translation's getting better, but there's still loads of room for ambiguities to become a problem. And yeah,...
by tufty
Thu Aug 31, 2017 6:10 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 283705

Re: Odds and ends

If you really want to square that up, you probably want lathe + toolpost grinder. Diamond wheel on a dremel type thing would do the trick.
by tufty
Wed Aug 30, 2017 6:00 pm
Forum: Valveless pulsejet forum
Topic: Annular M20
Replies: 5
Views: 1018

Re: Annular M20

The idea is, as you say, compelling. Surely all that symmetry should make for better performance...

I never got anything more than very unconvincing fart noises from my attempts.
by tufty
Tue Aug 29, 2017 3:21 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 283705

Re: Odds and ends

Bud Light meets Kazooenstein!
by tufty
Sat Aug 26, 2017 5:31 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 283705

Re: Odds and ends

You can get those aluminium bottles in bulk from aliexpress and taobao, No idea how much it would cost to get a custom shape made up. Too much, probably, and what would you do wth 10,000 aluminium pulsejets anyway?
by tufty
Sat Aug 26, 2017 12:23 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 283705

Re: Odds and ends

Like the dog.

Mind you, if you're going to go to such extremes to justify beer drinking, you could at least pick something better than Bud Light.

https://youtu.be/j5EmCKbWS6c
by tufty
Fri Aug 18, 2017 5:46 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1715
Views: 283705

Re: Odds and ends

You'll want something that tints the flame orange, to go with the carrot car it will be towing.
by tufty
Wed Aug 16, 2017 6:26 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 375
Views: 98584

Re: Mike's Build Log

Oh, lordy. Just popped in to see if the tumbleweeds were still around and - whoah!

There goes my productivity...
by tufty
Wed Aug 31, 2016 7:44 pm
Forum: Valveless pulsejet forum
Topic: Lovely video...
Replies: 5
Views: 1103

Re: Lovely video...

Yep, that's clear pvc. IIRC Mark had a bunch of borosilicate tubing a while back, but going from "bits of clear tubing" to "clear pulsejet" is a far from easy step. Even if it's only going to run for a few pulses at a time. Not sure if Nick didn't do something, waaay back when in the days of the old...
by tufty
Sat Aug 20, 2016 6:12 am
Forum: Valved pulsejet forum
Topic: Pulse Jet Compression
Replies: 6
Views: 1464

Re: Pulse Jet Compression

No, I'm spartacus! For the questions: 1 - Maybe, maybe not. How long is a piece of string? 2 - When steel goes yellow it's >1000°C, and that's without taking into account boudary layer cooling 3 - Compression is not necessarily directly related to SPL. "Bloody loud", like all pulsejets. 4 - Frequenc...
by tufty
Thu Jun 23, 2016 4:39 pm
Forum: Valveless pulsejet forum
Topic: Lovely video...
Replies: 5
Views: 1103

Lovely video...

I'm posting this in valveless, but it's relevant to valved as well. I could have put it in Mark's youtube thread in offtopic, but I think it's good enough to merit its own thread. Basically, what we have here is a guy filming a big clear spudgun in extreme slow motion, and although he's not (entirel...
by tufty
Wed Jun 08, 2016 6:38 pm
Forum: Off topic forum
Topic: June 12th
Replies: 4
Views: 1051

Re: June 12th

I don't know if that what he was talking about. It was a guess, based on the nearest thing basically pulsejet related I could find.
by tufty
Tue Jun 07, 2016 6:48 pm
Forum: Off topic forum
Topic: June 12th
Replies: 4
Views: 1051

Re: June 12th

First V1 strike on UK soil was June 13th 1944. Grove Road, E4

http://openplaques.org/plaques/530
by tufty
Wed May 18, 2016 5:14 pm
Forum: Valveless pulsejet forum
Topic: would this be considered a low frequency rudimentary pulse?
Replies: 7
Views: 1355

Re: would this be considered a low frequency rudimentary pul

Oh, it's yours?

In that case, you're not feeding it nearly enough. No regulator, lose the hole in the CC, shove a rosscojector up the intake.
by tufty
Tue May 17, 2016 6:18 am
Forum: Valveless pulsejet forum
Topic: would this be considered a low frequency rudimentary pulse?
Replies: 7
Views: 1355

Re: would this be considered a low frequency rudimentary pul

That's a "pipewood", a Lockwood-Hiller "ish" jet made from off-the-shelf plumbing parts. Invented by our very own Mike Everman, if memory serves. Search here for plans.