|
fun new engine
you might find this interesting.
http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm |
fun new engine
Looks very cool... I wonder what the price point is...
malcolm wrote: you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm |
fun new engine
Well unless you want to use sea water, the steam system is a net loss
requring some continious amount of "makeup" water. The vessel will be required to carry both fuel and water. Or, as I said, boil sea water I suppose. "Ed Edelenbos" wrote in message ... Looks very cool... I wonder what the price point is... malcolm wrote: you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm |
fun new engine
they say it will use any water , and stainless boiler,
designed to be not fussy, time will tell also any heat source can be used, solar collectors maybe for small boat engine. looks elegant and fun regards malcolm "Fred Williams" wrote in message ... Well unless you want to use sea water, the steam system is a net loss requring some continious amount of "makeup" water. The vessel will be required to carry both fuel and water. Or, as I said, boil sea water I suppose. "Ed Edelenbos" wrote in message ... Looks very cool... I wonder what the price point is... malcolm wrote: you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm |
fun new engine
if this really works as promised it should be the propulsion of choice for
many crafts. simple, light and elegant. but I still wonder if it really works? price will be the main issue I guess. While the website says it is cheap to build nobody mentions it will be cheap to buy. They have a patent on this which may make this engine really expensive - at least the first couple of years until it becomes mainstream. Time will show.. #rb "malcolm" wrote in message ... they say it will use any water , and stainless boiler, designed to be not fussy, time will tell also any heat source can be used, solar collectors maybe for small boat engine. looks elegant and fun regards malcolm "Fred Williams" wrote in message ... Well unless you want to use sea water, the steam system is a net loss requring some continious amount of "makeup" water. The vessel will be required to carry both fuel and water. Or, as I said, boil sea water I suppose. "Ed Edelenbos" wrote in message ... Looks very cool... I wonder what the price point is... malcolm wrote: you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm |
fun new engine
Injecting steam at "supersonic speeds" is going to require a really high
pressure boiler. Hot seawater is extremely corrosive and as the water boils off and the salt concentrates it will get even more so. Even in fresh water just think of the crud that will build up in the boiler. Seems like a neat idea though. Fred Williams wrote: Well unless you want to use sea water, the steam system is a net loss requring some continious amount of "makeup" water. The vessel will be required to carry both fuel and water. Or, as I said, boil sea water I suppose. "Ed Edelenbos" wrote in message ... Looks very cool... I wonder what the price point is... malcolm wrote: you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm -- Glenn Ashmore I'm building a 45' cutter in strip/composite. Watch my progress (or lack there of) at: http://www.rutuonline.com Shameless Commercial Division: http://www.spade-anchor-us.com |
fun new engine
Sounds a wee bit like those little flash steam model boats we used to make
as kids. A U shaped bit of copper tubing would project from the stern of the boat just on the water line. And would run slightly down for about 3" to a meths burner. After heating up, the boat would be put into the pond or whatever, a little water would enter the pipe and run down to the hot part where it would be vapourised causing a jet of steam to come out of the pipe, propelling the boat along with a series of Put Put Puts Good fun, I think I might go and make one now for the Kids! Patrick ---------- In article , "malcolm" wrote: you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm |
fun new engine
and dont forget the "always having hot water to brew Tea with"
If that system really works as proposed (including the mentioned efficiency increase) and they are able to secure patents worldwide then they will be able to give all makers of outboarders & marine engines a very hard time! And of course they will ensure that no plans for their engine are publicly available so that anybody cheating on their patents has to do his own research. But if you get an original engine to examine it should be not too hard to build your own. The advantages are numerous: Just think about having no heavy outboarder any more. It should be possible to just have the lightweight jet part hanging of the transom and the heavy boiler part may be located in the center of the boat. Fuel and boiler may also be used for cabin & water heating as well, probably also for a cooling system like the gas-powered camping fridges. It should be possible to have boilers working with different fuel types (just about everything that burns). And it looks like the jet engine has very few moving parts and so maintenance requirements should be very low. And that system should last much longer than the average outboarder (if they get the corrosion problem sorted out). Without the outboarder you will need more solar power for the eGimmicks. Time will show... #rb |
fun new engine
pulse jet engine
"Barry Palmer" wrote in message ... This unit appears to be some sort of ejector (jet) type pump, where the momentum of high velocity steam is transferred to the water, raising the mass of the entire stream so that the thrust is produced at lower exit velocity and therefore lower energy flow. Not only is the thermodynamics of heating and cooling questionable from an energy conservation standpoint, ejector pump (NOT jets found currently in marine use) efficiency is usually quite low, even when fluids for jet and reaction are the same density. Do I see another "Magnetohydrodynamic drive" scam in the works? Subject: fun new engine From: "malcolm" Date: 7/26/03 7:05 AM Pacific Daylight Time Message-id: the principle is similar to the WW2 V1 Pulse Jet Engine. instead of flap valves they use pressure and cavity shape from what I can gather. and steam instead of burning kerosine, and of course water as the reaction medium. if the system is expensive when it comes out that will be a shame, but should be easy (maybe) to DIY a system for a small boat. I am sure somebody will do some plans and work it out. regards malcolm "Patrick" wrote in message ... Sounds a wee bit like those little flash steam model boats we used to make as kids. A U shaped bit of copper tubing would project from the stern of the boat just on the water line. And would run slightly down for about 3" to a meths burner. After heating up, the boat would be put into the pond or whatever, a little water would enter the pipe and run down to the hot part where it would be vapourised causing a jet of steam to come out of the pipe, propelling the boat along with a series of Put Put Puts Good fun, I think I might go and make one now for the Kids! Patrick ---------- In article , "malcolm" wrote: you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm Barry Palmer, for A HREF="http://members.aol.com/sevtec/sev/skmr.html"Sevtec/A |
fun new engine
the Germans in WW2 dropped an alwful lot of V1s on London and Antwerp etc
using this method "Barry Palmer" wrote in message ... This unit appears to be some sort of ejector (jet) type pump, where the momentum of high velocity steam is transferred to the water, raising the mass of the entire stream so that the thrust is produced at lower exit velocity and therefore lower energy flow. Not only is the thermodynamics of heating and cooling questionable from an energy conservation standpoint, ejector pump (NOT jets found currently in marine use) efficiency is usually quite low, even when fluids for jet and reaction are the same density. Do I see another "Magnetohydrodynamic drive" scam in the works? |
fun new engine, hesitation, pinging etc...
Forgot to say this,
Do when the engine is fully warmed up Start engine then apply water mist. "Scott Downey" wrote in message ... Offhand If anyone has a carbon buildup in the combustion chamber, steam energy will clean it out good. Just take a garden hose with a very fine light mist setting Just a very, very, light mist spray Run the engine about 1200 rpm Feed in the fine water stream directly in at the intake manifold Do this for 15 minutes or so. Make sure the engine does not die off and quit, you dont want to fill the engine with water! The water explodes into steam and scours off the carbon from the pistons, heads and valves. This proceedure works extremely well. Read about 'water injection' on the web "malcolm" wrote in message ... you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm |
fun new engine, hesitation, pinging etc...
On Sun, 27 Jul 2003 15:21:13 -0400, "Scott Downey"
wrote: Forgot to say this, Do when the engine is fully warmed up Start engine then apply water mist. "Scott Downey" wrote in message ... Offhand If anyone has a carbon buildup in the combustion chamber, steam energy will clean it out good. Just take a garden hose with a very fine light mist setting Just a very, very, light mist spray Run the engine about 1200 rpm Feed in the fine water stream directly in at the intake manifold Do this for 15 minutes or so. Make sure the engine does not die off and quit, you dont want to fill the engine with water! The water explodes into steam and scours off the carbon from the pistons, heads and valves. This proceedure works extremely well. Read about 'water injection' on the web "malcolm" wrote in message ... you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm Well I don't know about that one? But I have done it to - plus I have tried stuff, such as kero - and various cans of $$$$ junk advertised as the almighty zippo carbon remover wonder + or so they all said. When I finally had to pull them apart - I had to take to that stuff with a hammer and chisel - that stuff is tough when its baked on, and no steam is going to move it. I have done dozens of the blighters - and its hells own job to move it. But maybe in the early stages. But it always best to check the plugs, to get a feel on how its burning, or a simple note on the exhaust colour - to make sure the mixture is bang on, that can save you a bit. - like any fireplace chimney. But its the cold stop start thing - as long as they get a good warm run, they should be clean. Water can push up the combustion ratio, so its cleaner burning with some extra h2o as you got a bit of extra hydrogen in there - You can spray a bit in with a garden hand spray,and there is gadgets which meter in small amounts to the carb - Its the same as some engines run noticeably better on rainy days, when the air is water saturated But its still about getting your mix right - if not your going to have to use the hammer and chisel method if you leave it too long between tunes. or do to much of that cold stop start. |
fun new engine, hesitation, pinging etc...
|
fun new engine
I see another "Magnetohydrodynamic drive"
scam in the works? Aha!! one of our number is beginning to see the King is "nekked" :o). Even with a working steam generator, the thrust will be very questionable, IMO, and the scaling.corrosion problems will be enormous. As a former supplier of high purity water to the Navy for steam turbines in carriers & nuke subs, I can tell you it takes a bunch of water that's about 6,000 times more pure than distilled and some very sophisticated corrosion treatments to keep it running under ideal conditions. Notice the "investment opportunity" pitch :o). Greg Sefton |
fun new engine, hesitation, pinging etc...
When you find an outboard with a cylinder head leak into the chamber, then you *will* know: a sparkling clean plug and piston head.... Brian Whatcott Altus OK And a dead cylinder :o) Greg Sefton |
fun new engine
Bray says "6000 times more pure than distilled". Hummmm. Isn't
distilled as pure as you can get. Ron |
fun new engine
Not if you're selling it to the Defence Department at $576.97 a gallon :-)
"Stephen Baker" wrote in message ... Ron says: Isn't distilled as pure as you can get. Depends on who is running the still, and how much of the output they have "tasted" ;-)) Steve |
fun new engine
Defence department, nuf said.
Steve, you making fun of my cousins down in South Car'liner? Ron |
fun new engine, hesitation, pinging etc...
It seems to me, I heard something about a WW II B-17 bomber used a water
mist injection during take off to blow out carbon and boost compression (hp). But I "still" don't think this gadget will produce any speed. C.F. Scott Downey wrote: Offhand If anyone has a carbon buildup in the combustion chamber, steam energy will clean it out good. Just take a garden hose with a very fine light mist setting Just a very, very, light mist spray Run the engine about 1200 rpm Feed in the fine water stream directly in at the intake manifold Do this for 15 minutes or so. Make sure the engine does not die off and quit, you dont want to fill the engine with water! The water explodes into steam and scours off the carbon from the pistons, heads and valves. This proceedure works extremely well. Read about 'water injection' on the web "malcolm" wrote in message ... you might find this interesting. http://www.pursuitdynamics.com/default.asp radical new form of water pulse Jet for Boats. regards malcolm |
| All times are GMT +1. The time now is 01:01 AM. |
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 BoatBanter.com