Search found 474 matches

by GRIM
Sat Sep 22, 2007 10:18 pm
Forum: Valveless pulsejet forum
Topic: Jims Little 3 Lb Thermojet
Replies: 297
Views: 247019

Hi Eric Thanks for replying To answer your question on propane i will have to elaborate a little I am in Chile (British origin) been here about 7 years, the gas they sell here comes in cylinders of 5, 12, 15, and 45 kg the only ones that have a proper valve are the 45 kg and they are way too heavy a...
by GRIM
Sat Sep 22, 2007 7:48 pm
Forum: Valveless pulsejet forum
Topic: Jims Little 3 Lb Thermojet
Replies: 297
Views: 247019

This one is running on sunflower oil , (from the kitchen, my wife hasnt missed it yet) any way in this video i have the fuel line disconnected and the gas disconnected , it is just running on the residual liquid/vapor trapped in the jacket by the check valve in all cases the throttle response is ver...
by GRIM
Sat Sep 22, 2007 7:26 pm
Forum: Valveless pulsejet forum
Topic: Jims Little 3 Lb Thermojet
Replies: 297
Views: 247019

This one is running on diesel
by GRIM
Sat Sep 22, 2007 7:19 pm
Forum: Valveless pulsejet forum
Topic: Jims Little 3 Lb Thermojet
Replies: 297
Views: 247019

Heres some videos (sorry about the quality) also i seem to have to post them seperately , bear with me , i dont have much experience with these video things none of these runs have the gas connected you can see the regulator thing on the grass however all were started on gas the first is running on ...
by GRIM
Fri Sep 21, 2007 12:43 am
Forum: Valveless pulsejet forum
Topic: Jims Little 3 Lb Thermojet
Replies: 297
Views: 247019

Here is a photo and a drawing of my latest experiment This thermojet is a slightly scaled up version of Eric’s 3 Lb design (thanks Eric) It has a 2” od exhaust, runs fine on propane, but not much power. (About 3 lb) I have not posted videos or photos because there’s not much new to show. It has evol...
by GRIM
Tue Sep 04, 2007 11:13 pm
Forum: Tools and Construction
Topic: Sheet metal rolling tool
Replies: 27
Views: 34702

faceted engine

The flat sheet development of the round cone and the faceted cone are identical, so will be equal in weight
I too am curious as to how she will look when hot :), will keep you posted
by GRIM
Tue Sep 04, 2007 10:04 pm
Forum: Tools and Construction
Topic: Sheet metal rolling tool
Replies: 27
Views: 34702

Hey, thanks to all for taking the time to reply, There are 20 facets on all the cones both large and small, no particular reason for the number 20; I just hit the divide command until it looked about right. When the time comes for the glowing part I will post a video, Thanks to you tube, this forum ...
by GRIM
Tue Sep 04, 2007 1:40 am
Forum: Tools and Construction
Topic: Sheet metal rolling tool
Replies: 27
Views: 34702

VARIATION ON A THEME

Here is my Cone Forming device It is a variation on a type of sheet metal folding machine; it will not make beautiful smooth cones, like those used on some of the excellent creations on this forum It will make accurate cones with many flat sides, see photos And does require patience, practice (and a...
by GRIM
Mon Sep 03, 2007 4:10 am
Forum: Tools and Construction
Topic: simple/cheap thrust gauge
Replies: 3
Views: 7202

THRUST MEASUREMENT

Hello Everyone , first post for me Thought I would share my “home made thrust measuring device” with you This came about by not being able to locate a suitable spring balance at any of the local hardware stores (all way too big ) The photos should explain better than words can , this particular devi...