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Re: lockwood hiller valveless pulsejet starting problem

Posted: Thu Apr 10, 2014 1:07 pm
by metiz
How does your injector look and where is it placed?

Re: lockwood hiller valveless pulsejet starting problem

Posted: Thu Apr 10, 2014 11:58 pm
by franchouille
My injector is a tube of internal diameter 4mm, with 2 lines of holes of 2mm of diameter, which crosses my combustion chamber in 10mm of the cone of the air inlet.

Think you that I have to cut my intake air?

video of building step by step: https://www.youtube.com/watch?v=6n6-9ob ... e=youtu.be

pictures of fuel injector:

[url=http://www.hostingpics.net/viewer.php?i ... 224349.jpg]Image


[url=http://www.hostingpics.net/viewer.php?i ... 153908.jpg]Image

Thanks

Re: lockwood hiller valveless pulsejet starting problem

Posted: Tue Apr 15, 2014 12:22 pm
by franchouille
Some news guys?

Re: lockwood hiller valveless pulsejet starting problem

Posted: Tue Apr 15, 2014 2:57 pm
by metiz
Try a different injector: a Rosscojector straight through the intake

Re: lockwood hiller valveless pulsejet starting problem

Posted: Wed Apr 16, 2014 4:23 pm
by franchouille
Ok i do not shorter the air intake?

Re: lockwood hiller valveless pulsejet starting problem

Posted: Wed Apr 16, 2014 9:16 pm
by metiz
If you build this engine from proven plans: don't hack off anything. Just try the injector. As an alternative, try the GRIMjector

Re: lockwood hiller valveless pulsejet starting problem

Posted: Sat Apr 19, 2014 12:03 am
by franchouille
Ok I will test this injector, have you got a good website for a plan please?
Thanks

Re: lockwood hiller valveless pulsejet starting problem

Posted: Sat Apr 19, 2014 6:00 pm
by tufty
A rosscojector is incredibly simple to make : viewtopic.php?f=3&t=5429&p=73658&hilit= ... tor#p73658

GRIM's 3 lobe injector is a similar concept. viewtopic.php?f=7&t=4688&p=55032&hilit=injector#p55032

Injector placement is important. With a"stinger" like this, you can probe your motor to find the best place for the injector.

Re: lockwood hiller valveless pulsejet starting problem

Posted: Thu May 01, 2014 3:53 pm
by lucaslab
franchouille - I have the same problem. Try reduce intake diameter to about 80% of original size.