OS Pulse Jet  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       

All Forums >> Radios, Batteries, Clubhouse and more >> Control Lines >> OS Pulse Jet
Page: [1]

Login
Message << Older Topic   Newer Topic >>
OS Pulse Jet - 7/10/2007 12:24:30 AM   
S_Ellzey



Posts: 365
Joined: 8/11/2002
From: Grand Prairie, TX, USA
Status: offline 		Hi Guys,

A friend of mine was into control line racing a long time ago. The other day he handed me a new in the box OS-Jet Type II, it even has the instructions. Unfortunatly it does not have the spray bar. I was hoping that some one might have one that they could maybe take a couple of good pictures of and provide some dimentions of it so that I might replicate one. I think I have a good work around on the air start nozzle, so that should not complicated things. I am also lead to believe that some of the racers made their own spray bars for improved performance. If some one has a design that works well I would be interested in that.

For now we are just hoping to get it running and see if we can raise the dead with the sound. If that works out I might see if I can get it in the air.

Thanks,

Steven

< Message edited by S_Ellzey -- 7/10/2007 12:25:39 AM >
       Post #: 1

RE: OS Pulse Jet - 7/10/2007 9:39:19 PM   
Motorboy



Posts: 1717
Joined: 2/7/2004
From: Bergen, NORWAY
Status: offline 		I had the pulsejet engine maked after the plan of Emil Brauner pulsejet. The size of orifice are 0.9 and 1.0 mm. Later i replaced to adjustable spraybar to make easier to tune pulsejet depent on weather and force of reed valve.

How to adjust with adjustable spraybar:
Short run with blue flame, pop..pop...pop, then stop each time: increase fuelmix.
Yellow long flame, some time poor running or stop each time: reduce fuelmix.
Roaring with short arrowed flame: correct adjusted fuel mix.

The problem with pulsejet engine are reed valve, they are burned off hot after some flights. Never run the engine without let it move forward to cool down the engine, it is normal the engine are glowing while the engine are running, insulate the engine against fire at plane.

Run at gasoline and the pulsejet need larger fueltank for longer flight. Use ear protection against noise.

_____________________________

Jens Eirik
All landings are just controlled crashes!

(in reply to S_Ellzey)
       Post #: 2

RE: OS Pulse Jet - 7/11/2007 12:11:32 AM   
greggles47


 

Posts: 52
Joined: 7/5/2006
From: Sydney, AUSTRALIA
Status: offline 		G'day Steven,

Check with the blokes at North American Speed Society http://www.clspeed.com/member.htm

They should be able to help you track down spare parts, and a suitable model to get that baby flying.

I would guess that your friend really meant speed models rather than racing. Racing a pulse jet would be "very interesting!!" if not a little scary.

Good luck, and please give us progress reports.

There is a small but enthusiastic Jet following in Australia. They don't quite wake the dead, but no one is ever in doubt about whether it is running....ahh noise!!!

regards

Greggles

(in reply to Motorboy)
       Post #: 3

Page:   [1]
All Forums >> Radios, Batteries, Clubhouse and more >> Control Lines >> OS Pulse Jet
Page: [1]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.406RCU5