Search found 84 matches

by 55dcyinely
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: 16866

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...
by 55dcyinely
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: 3331

Re: My answer to' what is the compression racial of a PJ Engine

PyroJoe wrote:I offer this question:
Would we ever see any significant pressure wave produced by a engine working on the Lenoir cycle?
PyroJoe
Good Question! "That would be a real quandering" For all intent and propose Rocket Man, confirmed my Answer/Question.
Thanks
by 55dcyinely
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: 3331

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.
by 55dcyinely
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: 3331

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...
by 55dcyinely
Sun Oct 09, 2011 3:42 am
Forum: Valved pulsejet forum
Topic: Dyna-Jet story
Replies: 36
Views: 17150

Re: Dyna-Jet story

Jerry
My condolences as well.
My Mother was a victim of diabetes and Alzheimer she pass in 2003.
by 55dcyinely
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: 16866

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 ...
by 55dcyinely
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: 16866

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...
by 55dcyinely
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: 16866

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 ...
by 55dcyinely
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: 16866

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
fire.jpg
MasterBlaster 2
Following artical
By John Plestina
Ely Times Editor
http://www.elynews.com/articles/2011/07 ... life01.txt
by 55dcyinely
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: 16866

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...
by 55dcyinely
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: 16866

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...
by 55dcyinely
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: 16866

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...
by 55dcyinely
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: 16866

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...
by 55dcyinely
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: 16866

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...
by 55dcyinely
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: 16866

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 ...