Search found 10941 matches
- Sat Jan 31, 2004 2:44 am
- Forum: Valveless pulsejet forum
- Topic: Jam Jar BCVP
- Replies: 93
- Views: 86227
Thanks. I'll for sure try the hot water first, think I'll skip methanol as coolant and go straight to bees from there, I have a bee-keeper friend! Gallium is good (hate for it to go down the drain, though), so would molten salt... Trying like hell not to have a recirculating pump and radiator, but ...
- Fri Jan 30, 2004 3:40 pm
- Forum: Valveless pulsejet forum
- Topic: Jam Jar BCVP
- Replies: 93
- Views: 86227
I keep looking at all the pyrex and quartz glassware around here and dreaming of an elaborate lab bench setup where 20 jam jars all connect to a fuel source and run together, interacting and singing like the muppets gone glass. Chris I once lit/had three different odd jam jar devices going all at o...
- Fri Jan 30, 2004 3:20 pm
- Forum: Valveless pulsejet forum
- Topic: Jam Jar BCVP
- Replies: 93
- Views: 86227
Well, why don't you lower delta T by using hot water to cool the jar instead of cold?. In Formula 1 engines, oil is cooled not by ambient air but by the engine coolant, which reaches over 100 C at times. I'm thinking Gallium for a coolant, it melts at 29 C, but doesn't boil until 1600 C. That's a l...
- Fri Jan 30, 2004 3:05 pm
- Forum: Valveless pulsejet forum
- Topic: Jam Jar BCVP
- Replies: 93
- Views: 86227
I came home and tried a single glass quart jar, on it's side with cold water running on the ouside. Lasted about 3 sec, then shattered into ittle bittier pieces than any before. Exhaust smelled very different, too. Water coverage wasn't the best, I'll try submerged but I'm out of jars! I once had a...
- Thu Jan 29, 2004 5:04 pm
- Forum: Tools and Construction
- Topic: Quartz
- Replies: 42
- Views: 50316
that's a sugar dispenser! the coffee pots and malt cups for Hamilton blenders are good too. I think there are some good espresso accessories with screw caps. http://www.home-espresso.com/product/6016B Nice shape, screw top, spendy though... Think I'll just use small mutilated propane cannisters. I ...
- Thu Jan 29, 2004 2:48 pm
- Forum: Tools and Construction
- Topic: Quartz
- Replies: 42
- Views: 50316
[quote="Mike Everman"]Nice link, Volrath. I like the 18-8 funnels, for obvious reasons. I didn't find the quart steel jars, though... On the link I posted, the bottle/medical jar is pictured to the left of that funnel. It has a lid/cap that just lifts off and if topless, you can see the medical jar ...
- Thu Jan 29, 2004 5:15 am
- Forum: Tools and Construction
- Topic: Quartz
- Replies: 42
- Views: 50316
Speaking of methanol, I had a very productive night with jam-jars. I was joking with Bruno recently about pointing jam jars at each other to see if they phase up, BCVP style, and they do! (or did). It was wild, much louder than two running seperated. Best spacing of 5 positions longer and shorter w...
- Wed Jan 28, 2004 6:08 pm
- Forum: Valveless pulsejet forum
- Topic: Valveless Pulsejet, 100% Effective?
- Replies: 12
- Views: 13884
I think I have posted this and the other patent number in other threads before, It is a pressure jet type engine but interestingly he calls it a valveless. One thing to note, he states that it will not run with out the coiled wire flame holder! now he calls it a flame holder but it does not provide...
- Wed Jan 28, 2004 3:32 am
- Forum: Valveless pulsejet forum
- Topic: Valveless Pulsejet, 100% Effective?
- Replies: 12
- Views: 13884
- Wed Jan 28, 2004 3:01 am
- Forum: Tools and Construction
- Topic: Quartz
- Replies: 42
- Views: 50316
Here's a quote from an early 1950s study (I think by NACA) on pulsejet temperatures. 1 degree Reaumur is equal to 1.25 degrees Celsius. http://www.csc.liv.ac.uk/~frans/COMP101/week6/reaumur.html http://www.rayotek.com/Technical-1.html#Anchor-WHY-49575 1965 Experimental Aircraft Assn. "The construct...
- Wed Jan 28, 2004 2:22 am
- Forum: Tools and Construction
- Topic: Quartz
- Replies: 42
- Views: 50316
I think I read a pulsejet runs at 1800 F to 2000 F or thereabouts, 2000 F = 1,093.33 C. Nickel melts at 1452 C. Iron melts at 1535 C. I read a blend of silicone dioxide and aluminum dioxide melts at 1800 C plus. Here's a quote from an early 1950s study (I think by NACA) on pulsejet temperatures. 1 ...
- Wed Jan 28, 2004 1:12 am
- Forum: Tools and Construction
- Topic: Quartz
- Replies: 42
- Views: 50316
I think I read a pulsejet runs at 1800 F to 2000 F or thereabouts, 2000 F = 1,093.33 C. Nickel melts at 1452 C. Iron melts at 1535 C. I read a blend of silicone dioxide and aluminum dioxide melts at 1800 C plus. Here's a quote from an early 1950s study (I think by NACA) on pulsejet temperatures. 1 ...
- Wed Jan 28, 2004 12:13 am
- Forum: Tools and Construction
- Topic: Quartz
- Replies: 42
- Views: 50316
Some quartz room heater elements get red hot in seconds, I have a flat topglass stove that glows red hot, a glass see-through flat surface. For a jam jar, it seems it would be a good thing to try. Yes, a jam jar, which is hardly stressed mechanically, it would be nice. However, if you want to have ...
- Tue Jan 27, 2004 11:02 pm
- Forum: Tools and Construction
- Topic: Quartz
- Replies: 42
- Views: 50316
Guys, my late father, who was the Pope of glass, one of the world's foremost experts on amorphous silicates, dismissed my idea of a quartz pulsejet as silly. He said, "Son, fused quartz is a liquid, not a solid. It only looks solid. When simultaneously heated and exposed to mechanical stress, it wi...
- Tue Jan 27, 2004 10:23 am
- Forum: Tools and Construction
- Topic: El'Cheapo Spark Source
- Replies: 20
- Views: 27457
Re: El'Cheapo Spark Source
More over-pricing on ebay.http://cgi.aol.ebay.com/ws/eBayISAPI.dl ... gory=42881Rescyou wrote:Spark source:
http://sales.goldmine-elec.com/prodinfo.asp?prodid=7049
Schematics:
http://www.repairfaq.org/sam/samschem.htm
(search for "kool")
Mark