Search found 84 matches
- Sat Jul 06, 2013 5:01 am
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane t
329 (2).jpg All in good fun! http://www.youtube.com/watch?v=I4THXypp-P8&feature=share&list=UUAWyUBQ-Q8YduS63fnIPXpg Twin 110 lb thrust valued engines! by Robert Maddox Forward bow to heavy I think, plus to much thrust for a pontoon bathtub boat? Oh yea' this was the fourth year. For the Cave Lake E...
- Sat Jan 28, 2012 7:39 pm
- Forum: Valved pulsejet forum
- Topic: My answer to' what is the compression racial of a PJ Engine
- Replies: 6
- Views: 8178
Re: My answer to' what is the compression racial of a PJ Engine
PyroJoePyroJoe wrote:I offer this question:
Would we ever see any significant pressure wave produced by a engine working on the Lenoir cycle?
Good Question! "That would be a real quandering" For all intent and propose Rocket Man, confirmed my Answer/Question.
Thanks
- Sun Jan 22, 2012 3:20 am
- Forum: Valved pulsejet forum
- Topic: My answer to' what is the compression racial of a PJ Engine
- Replies: 6
- Views: 8178
Re: My answer to' what is the compression racial of a PJ Engine
Hi Rocket Man
That's great! I couldn't remember where that information came from but I did remember reading it. At first you read everything you can about what interests you (in this case PJ's)
and soon forget where to find it.
That's great! I couldn't remember where that information came from but I did remember reading it. At first you read everything you can about what interests you (in this case PJ's)
and soon forget where to find it.
- Sat Jan 21, 2012 5:47 pm
- Forum: Valved pulsejet forum
- Topic: My answer to' what is the compression racial of a PJ Engine
- Replies: 6
- Views: 8178
My answer to' what is the compression racial of a PJ Engine
The pulsejet uses Barometric pressure the (Lenoir cycle) which unlike external compressive drive such as the Otto cycle's piston, or the Brayton cycle's of the compression turbine, Pulse Jets engine relays on compression from acoustic resonance and barometric pressure. This limits the maximum (pre-c...
- Sun Oct 09, 2011 3:42 am
- Forum: Valved pulsejet forum
- Topic: Dyna-Jet story
- Replies: 41
- Views: 46053
Re: Dyna-Jet story
Jerry
My condolences as well.
My Mother was a victim of diabetes and Alzheimer she pass in 2003.
My condolences as well.
My Mother was a victim of diabetes and Alzheimer she pass in 2003.
- Wed Oct 05, 2011 2:46 pm
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
Viv This guy did the welding for me. I could meg weld ok but his work is first class. Remember Eric the guy from Sweden? Here's a link. It was my inspiration for this project. http://www.pulse-jets.com/phpbb3/viewtopic.php?f=2&t=5717&st=0&sk=t&sd=a&start=45 PyroJoe Thanks having the flu sucks! Just ...
- Wed Oct 05, 2011 4:16 am
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
P1010336.JPG P1010335.JPG P1010334.JPG I guess it's a little early but here is a pair of 110 lb Valued Argus PJ Engines. The crowd is going to love These noise makers! I've haven't had a chance to fire them up. Been real under the weather. Just wanted to add these pitchers while I was thinking abou...
- Sun Jul 03, 2011 5:57 pm
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
Yeah, Doug, really cool. How many boats came out? Anything as interesting as pulse jet power? Hi Mike, Yeah! there were more paddle boats this year. The motorized group was smaller, only 5 and 1 sunk before the race started. 19 total entry's this year. 6 entry's from out of town some from Utah and ...
- Sun Jul 03, 2011 2:43 pm
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
Here I'm just entertaining the crowed. Fire and loud blast's! that just seems to please them.
Photo By Ely Times Following artical
By John Plestina
Ely Times Editor
http://www.elynews.com/articles/2011/07 ... life01.txt
Photo By Ely Times Following artical
By John Plestina
Ely Times Editor
http://www.elynews.com/articles/2011/07 ... life01.txt
- Sun Jun 26, 2011 8:40 pm
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
White pine County Rec. Ely Nevada Cave lake Bathtub Races Summer of 2011 25th of June. My entry was a twin Lockwood Pulse Jet Engine Liquid Propane Powered. The gasoline injection turned out to be harder to vaporize than I anticipated. However the larger pontoons gave me more flotation. i.e. Less wa...
- Sun Apr 10, 2011 8:04 pm
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
Put succinctly, water injection = extra massflow = extra thrust. Eric Beck is the man for chapter and verse on it. Here's some good stuff Mark found - http://www.pulse-jets.com/phpbb3/viewtopic.php?f=2&t=4628&st=0&sk=t&sd=a&hilit=water+injection#p54152 Oh, and augmentors. "he wrote compactly but cl...
- Sun Apr 10, 2011 2:07 pm
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
Given that you'll be running on water, it seems to me that water injection might well give you a handy boost. Hi tufty, Funny you mention that but I’ve already set up another pump from a RV camper specifically for pumping water. Personally, I don’t see any advantage in trying to run on water. But y...
- Sun Apr 10, 2011 2:48 am
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
Hello Mike, I was talking to an Ed Dempsey, out in your neck of the woods. I needed some help on an old military 3 phase 4 wire 400 HZ aircraft motor. At first I had no idea who he was, and later embarrassed. He holds the worlds fastest electric car record. At the Bonneville salt flats! 110 miles fr...
- Sat Apr 09, 2011 11:08 pm
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
Hi Doug I think I would still go with plain old pump gas if I could, do you recall were you came across the high octane making a difference and the circumstances it was run under? we do know that ethanol mix's tend to mess with pump seals and probably alters the performance, downwards or upwards? n...
- Sat Apr 09, 2011 4:03 pm
- Forum: Valveless pulsejet forum
- Topic: homemade jet bathtub that was powered by a BBQ propane tank
- Replies: 42
- Views: 44244
Re: homemade jet bathtub that was powered by a BBQ propane tank
Hi Doug That's a monster your building there ;-) what did the prototype run like? any pics, are your clamps holding the exhaust pipes able to slide due to heat expansion? Oh and ordinary pump gas will be fine no need or high octane any thing on a pulse jet Viv I read somewhere high octane gasoline ...