Search found 856 matches

by tufty
Wed Jun 16, 2021 5:11 am
Forum: Off topic forum
Topic: youtube
Replies: 1472
Views: 323979

Re: youtube

Oh yeah!. We likes that.
by tufty
Sat May 01, 2021 8:47 pm
Forum: Valveless pulsejet forum
Topic: My first pulse jet!!!
Replies: 6
Views: 667

Re: My first pulse jet!!!

Not sure about amazon slip rolls, or what they cost. I don't trust cheap shit bought across the 'net, though. I made my own rolls, from scrap, cost next to nothing. Here's an idea - https://www.youtube.com/watch?v=m7eNLv6BR4Y As far as thickness goes, it's easier to bend thinner material, but it wil...
by tufty
Fri Apr 30, 2021 5:16 am
Forum: Valveless pulsejet forum
Topic: My first pulse jet!!!
Replies: 6
Views: 667

Re: My first pulse jet!!!

As far as a new jet to build, scaling is a bit risky (although scaling *up* is usually more forgiving). A Lockwood is a fairly forgiving design, and produces useful thrust, for something smaller there's the various FWE engines from Larry. There's loads of plans in the pinned topic at the top of this...
by tufty
Thu Apr 29, 2021 6:36 pm
Forum: Valveless pulsejet forum
Topic: My first pulse jet!!!
Replies: 6
Views: 667

Re: My first pulse jet!!!

Excellent! Nice work.
by tufty
Fri Apr 09, 2021 7:28 pm
Forum: Off topic forum
Topic: youtube
Replies: 1472
Views: 323979

Re: youtube

That's a thing of beauty.
by tufty
Wed Feb 10, 2021 7:40 pm
Forum: Off topic forum
Topic: hey hey happy new year
Replies: 3
Views: 1537

Re: hey hey happy new year

Just bought myself a minimum viable TIG machine at a knockdown price, need to find myself some argon at a price that doesn't require selling a kidney and then I'm planning on making up Larry's last published design (Lady Anne R09). I'd have done it with gas, but I don't have access to oxy-acet' any ...
by tufty
Wed Jan 27, 2021 7:40 am
Forum: Gas turbine forum
Topic: ScrapQueen's turbocharger jet
Replies: 10
Views: 2935

Re: ScrapQueen's turbocharger jet

Excellent!
by tufty
Tue Jan 12, 2021 7:44 am
Forum: Off topic forum
Topic: hey hey happy new year
Replies: 3
Views: 1537

hey hey happy new year

Hi all. Been a while since I've been around, hope everyone is staying safe and well in these difficult times.

A happy and prosperous new year to you all, keep making obnoxiously noisy gas burners.

Simon
by tufty
Fri Dec 27, 2019 4:41 pm
Forum: Valveless pulsejet forum
Topic: Christmas bonus!
Replies: 2
Views: 2630

Christmas bonus!

Not mine. You've probably already seen this.

https://www.youtube.com/watch?v=28XbT11lL24
by tufty
Thu Feb 15, 2018 7:19 pm
Forum: Off topic forum
Topic: youtube
Replies: 1472
Views: 323979

Re: youtube

Yum. Carby!
by tufty
Mon Feb 12, 2018 3:47 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1776
Views: 517152

Re: Odds and ends

You might find this interesting, perhaps even related...

http://bora.uib.no/bitstream/handle/195 ... sAllowed=y
by tufty
Sat Dec 16, 2017 3:47 pm
Forum: Off topic forum
Topic: youtube
Replies: 1472
Views: 323979

Re: youtube

You can do better than this, Mark

https://www.youtube.com/watch?v=FEOEyDRzkNE
by tufty
Sat Oct 28, 2017 5:11 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1776
Views: 517152

Re: Odds and ends

If I was trying to do that... First off, I'd make up an expanding arbor, if I were trying to pierce the bottom of a "jar" that I could get into, or contracting chuck to hold the outside. Make the thing from aluminium disks / rings, say 10mm thick and under (or over) sized by something like 0.05mm, s...
by tufty
Fri Oct 27, 2017 7:00 am
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1776
Views: 517152

Re: Odds and ends

WRT the 5mm hole, it might be that they're trying to meet some ridiculous tight tolerance (either specified by you, or "default") rather than having trouble actually making a hole. I can see it being properly hard to meet, say, a radial tolerance of ±0.01mm in glass. Did you ask what the problem was?
by tufty
Thu Oct 26, 2017 6:06 pm
Forum: Tools and Construction
Topic: Odds and ends
Replies: 1776
Views: 517152

Re: Odds and ends

Aww, man. That's wonderful.

The quartz jar is excellent. Well done!