Search found 47 matches

by toakreon
Mon Apr 30, 2007 8:01 pm
Forum: Valveless pulsejet forum
Topic: 70lber running on diesel fuel
Replies: 30
Views: 11683

I'm hearing the sound loud and clear ... so while there's obviously something odd happening the sound IS there ...

John
by toakreon
Mon Apr 30, 2007 6:42 pm
Forum: Valveless pulsejet forum
Topic: ~~~~First Valveless!!~~~~
Replies: 29
Views: 12596

Congratulations on the successful run ... :)

John
by toakreon
Sat Apr 28, 2007 1:35 pm
Forum: Valveless pulsejet forum
Topic: How small is to small.
Replies: 6
Views: 3114

Smallest I've heard of was a 4 inch valveless that would run on Hydrogen at about 2000Hz. If I recall it gave damn all thrust but make a VERY loud noise and got bright, cherry-red hot.

John
by toakreon
Tue Apr 24, 2007 3:03 pm
Forum: Tools and Construction
Topic: Welding for Newbies - or, in this case, for me ... :)
Replies: 25
Views: 13516

Thanks Loco ... well werth (*EDITED* or even "worth") a thought ... :)

John
by toakreon
Sun Apr 22, 2007 10:08 am
Forum: Valveless pulsejet forum
Topic: hydrogen ugly stick
Replies: 13
Views: 4505

How well does this "Ugly Stick" design work? Strikes me it might serve for me as well, as an "established design" to get running before investing in welding kit for the "Squirrel".

John
by toakreon
Thu Apr 19, 2007 4:57 pm
Forum: Valveless pulsejet forum
Topic: any body know cool things to do with a pulse jet?
Replies: 43
Views: 15762

The rapid and intense blasts of extremely hot air are excellent for cooking meat. Now that's a good one. Police Officer - Excuse me, Sir. We've had complaints about a horrendous, roaring noise coming from your back garden that can be heard at least two miles away. Me - Oh? I'm sorry. I was just try...
by toakreon
Thu Apr 19, 2007 2:21 pm
Forum: Valveless pulsejet forum
Topic: any body know cool things to do with a pulse jet?
Replies: 43
Views: 15762

BBQ?

Cook your sausage in 1.38 seconds ... ;)

John
by toakreon
Thu Apr 19, 2007 8:28 am
Forum: Valveless pulsejet forum
Topic: hydrogen rocket
Replies: 16
Views: 5982

I'm sure I saw a video somewhere about an attempt to produce a 2 inch long pulse-jet. The researchers started with a 15 incher, then "approximately halved" it to 8 inches (ran fine on hydrogen) the halved it again to a 4 inch (which also ran). I don't think they'd achieved the goal of 2 inches, but ...
by toakreon
Wed Apr 18, 2007 10:23 pm
Forum: Tools and Construction
Topic: Welding for Newbies - or, in this case, for me ... :)
Replies: 25
Views: 13516

I'll have a look and see what's available around here ... :) ... And compare with gas ...

John
by toakreon
Wed Apr 18, 2007 8:48 pm
Forum: Tools and Construction
Topic: Welding for Newbies - or, in this case, for me ... :)
Replies: 25
Views: 13516

It is ... Kinda makes me wish Chicago was somewhere close to Surrey ... :(

John
by toakreon
Wed Apr 18, 2007 6:58 pm
Forum: Tools and Construction
Topic: Welding for Newbies - or, in this case, for me ... :)
Replies: 25
Views: 13516

Ah ... another thing to consider ... It's not good being a complete welding newbie - the possibility of mistakes!

I shall see what the gas bottle would cost me.

John
by toakreon
Wed Apr 18, 2007 4:47 pm
Forum: Tools and Construction
Topic: Welding for Newbies - or, in this case, for me ... :)
Replies: 25
Views: 13516

*EDIT* OK ... I've looked at oxy-acetylene "sets" and I see one advertised, new and at a price that seems reasonable consisting of:- (and here I'm cut-n-pasting) 1 x 5mtr Set of Oxy-Acetylene Welding Hose (With safety fittings fitted) 1 x Oxygen S-150 2 Gauge Regulator 1 x Acetylene S-22 2 Gauge Reg...
by toakreon
Wed Apr 18, 2007 12:45 pm
Forum: Tools and Construction
Topic: Welding for Newbies - or, in this case, for me ... :)
Replies: 25
Views: 13516

Thanks lojbeck, Yes, certainly another route to consider. I'll look into gas equipment - but having said that I have an "aversion" to toe idea a shed full of gas cylinders (I'd rather not even have a propane one there if I could avoid it, unfortunately that's just not going to be possible) so I woul...
by toakreon
Tue Apr 17, 2007 10:21 am
Forum: Tools and Construction
Topic: Steam engine
Replies: 37
Views: 21652

If you're wanting a "desktop engine" might I suggest you don't go "steam" at all, but go for a "Stirling" hot-air engine? Far more "interesting" and no high pressures on your desk. Oh - and almost instant start-up with no need for a boiler to boil and pressurize.

John
by toakreon
Tue Apr 17, 2007 9:39 am
Forum: Tools and Construction
Topic: Welding for Newbies - or, in this case, for me ... :)
Replies: 25
Views: 13516

Welding for Newbies - or, in this case, for me ... :)

OK ... my "Squirrel" valveless pulse-jet design is reaching the time when it needs to be tried "in the steel", so the time has come to build it! This is somewhat hindered by the fact that (a) I have never welded in my life ... well, actually I have, but it was with oxy-acetylene and years ago ... an...