Search found 557 matches

by Al Belli
Sat Jun 12, 2004 5:34 pm
Forum: Valveless pulsejet forum
Topic: "Universal" pulsejet testing
Replies: 59
Views: 25080

Renishaw scale

Hi Mike,

You don't mess around when You buy a linear scale !
Renishaw is the " Cadillac " of measurement systems.
I noticed the flys in Your picture. Do You tie them, and fly fish ?

Al Belli
by Al Belli
Fri Jun 11, 2004 8:53 pm
Forum: Valved pulsejet forum
Topic: Mesh Valve Retainer
Replies: 7
Views: 3076

Mesh retainers

I am currently trying perforated metal as a retainer. Here's a photo of My first test valve assembly.

Al Belli
by Al Belli
Thu Jun 10, 2004 12:13 pm
Forum: Tools and Construction
Topic: anyone know about inductive heating?
Replies: 15
Views: 6702

Induction Heating

Hi Mike Kirney,

This is a simple circuit for a power supply operating at a reasonable voltage.

Al Belli
by Al Belli
Wed Jun 09, 2004 7:00 pm
Forum: Off topic forum
Topic: Finaly I got a lathe !!
Replies: 8
Views: 2843

Grinding Wheels

For high speed steel use an 80 or 120 grit aluminum oxide wheel. For carbide use a 120 grit silicon carbide wheel. Don't overheat the tool steel, and You may use a water quench to cool the tool. Don't overheat the carbide tool since it causes microcracks to develop, which causes premature tool failu...
by Al Belli
Wed Jun 09, 2004 6:45 pm
Forum: Tools and Construction
Topic: anyone know about inductive heating?
Replies: 15
Views: 6702

Radar Technician's Trick

A friend of mine would initiate the new radar tecnicians onboard the ship by " checking ' their first antenna work, and surrupticiously inserting a wad of steel wool into the waveguide mouth. The first pulse gave a magnificent shower of sparks that scared hell out of the neophyte.

Al Belli
by Al Belli
Wed Jun 09, 2004 6:35 pm
Forum: Tools and Construction
Topic: Welding with coat hanger
Replies: 11
Views: 4884

Welding filler rod/wire

Hi, While coat hangers do work as a filler rod, they are made from very variable steel alloy, and contain many impurities; as well as various amounts of carbon. If You bend a coathanger using a plier to get a sharp bend, and keep flexing it, it will work harden and break. Fewer bends means more impu...
by Al Belli
Tue Jun 08, 2004 12:20 pm
Forum: Off topic forum
Topic: Finaly I got a lathe !!
Replies: 8
Views: 2843

Lathe dogs

Mike,

Does that mean that a lathe dog is Man's really, really, best friend ?

Al Belli
by Al Belli
Sun Jun 06, 2004 11:27 pm
Forum: Tools and Construction
Topic: Getting the zinc off of galvanized parts
Replies: 20
Views: 8624

muriatic acid ( impure hydrochloric acid )

Hydrochloric acid gives off HCl fumes which will rust everything they touch !! Clean up and neutralise any spills, especially on porous items like wood, cloth, paper, etc. Make sure all containers are tightly sealed. Ammonia does a good job of neutralising HCl, but make sure the two never mix, or Yo...
by Al Belli
Sun Jun 06, 2004 12:24 pm
Forum: Tools and Construction
Topic: Getting the zinc off of galvanized parts
Replies: 20
Views: 8624

Stripping zinc plate.

Chemically:

2HCl + Zn > ZnCl2 + H2^

The resulting solution of zinc chloride in hydrochloric acid makes an excellent soldering flux !

Al Belli
by Al Belli
Wed Jun 02, 2004 11:31 pm
Forum: Tools and Construction
Topic: Home built ignition system(?)
Replies: 22
Views: 10281

English

Mike, Microsoft Word did not suggest a corrective action, so I let it post as typed. I think that "damned ugly" would have been more grammatically correct.

Al Belli
by Al Belli
Wed Jun 02, 2004 11:20 pm
Forum: Tools and Construction
Topic: Home built ignition system(?)
Replies: 22
Views: 10281

Corrected post, politically insensitive.

Orig.---damn mike that pulse jet is so damn ugly.i dont think i have ever seen a worse looking one...if i built a jet that looked like that i dont think id ever show it to anyone,let alone post it on the internet.with construction skills like yours i dont think you should be giving advise...maybe we...
by Al Belli
Wed Jun 02, 2004 10:47 pm
Forum: Tools and Construction
Topic: Home built ignition system(?)
Replies: 22
Views: 10281

Mike's reply

Mike, If I were You, I would have advised Your detractor to seek advice about spelling, grammar, punctuation, and manners!!
Al Belli
by Al Belli
Tue Jun 01, 2004 12:47 pm
Forum: Off topic forum
Topic: Work and play
Replies: 4
Views: 1221

electron beam welding

Hi, You are going to really like these welds. The parts are left sharp, with no deburring; to leave material for the weld. The welds are " fusion " welds in the purest form. The equipment is very expensive, since the welding must be performed in a vacuum chamber. The electron beam is steered electro...
by Al Belli
Wed May 19, 2004 11:50 am
Forum: Valved pulsejet forum
Topic: fuel pump info needed
Replies: 2
Views: 2466

Fuel pump

Go to the tools & materials topic, and see " a million fuel pumps ".

Al Belli
by Al Belli
Tue May 18, 2004 11:40 am
Forum: Valved pulsejet forum
Topic: Questions on building my pulse jet engine
Replies: 2
Views: 2203

Pulsejet design

The Westberg paper and calculator will help You design a pulsejet. Please note that Mr. Westberg is Swedish, and think for a moment what a paper written by You might look like, gramatically, if You wrote it in Swedish. There are many proven design plans available on this site, and if You study and c...