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Jam jar jet fuel system

Posted: Tue Jul 29, 2014 6:39 pm
by Valveless Sam jet
If anyone else has heard of the jam jar jet (tin can pulsejet) do you think it would be possible to insert a steel pipe through a hole in the side and attach a fuel pump so I can get a nice long run from it :D . Bye

Re: Jam jar jet fuel system

Posted: Sun Aug 10, 2014 10:06 pm
by Mike Everman
You can do a drip feed, but then the critical thing is a cooling water jacket. Jam jars get too hot.

Re: Jam jar jet fuel system

Posted: Sun Aug 10, 2014 11:10 pm
by metiz
But don't get it too cold, because it won't like that either

Re: Jam jar jet fuel system

Posted: Tue Aug 12, 2014 10:58 am
by jamjarjim
Have you seen this??

http://www.youtube.com/watch?v=8krnOeql ... detailpage

Theres not much info with the videos. Is Kevin Lee a memeber of this form????

Regards, Jim

Re: Jam jar jet fuel system

Posted: Sat Sep 20, 2014 10:06 am
by Pyromaniac
Couldn't you just attach a one-way valve to a fuel pipe and do a suction feed?

Re: Jam jar jet fuel system

Posted: Sun Sep 21, 2014 9:47 am
by jamjarjim
What kind of one way valve would you use?

Jim.

Re: Jam jar jet fuel system

Posted: Mon Sep 22, 2014 3:39 am
by Pyromaniac
I don't know anything about one way valves. Anything with a fast response (how many hertz does a jam jar max out at?)

Re: Jam jar jet fuel system

Posted: Mon Sep 22, 2014 3:40 am
by Pyromaniac
Pyromaniac wrote:Couldn't you just attach a one-way valve to a fuel pipe and do a suction feed?
I meant pressure feed.

Re: Jam jar jet fuel system

Posted: Fri Oct 24, 2014 10:20 am
by VicHanby
Pyromaniac wrote:I don't know anything about one way valves. Anything with a fast response (how many hertz does a jam jar max out at?)
I've attached a pdf of the pressure trace from a Reynst pot taken from a paper published in 1967. The major time divisions in pic (a) are 0.1 sec so it's frequency is ~ 58Hz. This isn't a jam jar, it was 3.64in id, 8.5 in long and 9/16 in hole.

Vic