www.pulse-jets.com

To answer Marten other question
I built the jet from .7mm thick stainless steel sheet, It weighs around 500 grams including spark plug.

The position of the stinger doesn't seem critical, It can be moved around anywhere from one to three inchs from the intake opening, The pitch of the jet does change but it keeps running. I tried lighting the rosscojector before putting it in the intake but it just blows itself out, The fuel pressure...

Thanks for the replies,

The FWE is built to the dimensions given by Larry in his jetzilla article, 1.25" tailpipe and 26" total length etc.

The "Rosscojector" is made from 5/16" copper brake pipe, cut through with pliers as per photo

Hi folks,
Here's a short video of my FWE starting, without forced air, using a rossco stinger & propane gas.

Ideally you want two rolls to turn, Its hard for them to grip on stainless steel. Check this Ebay item. http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=4539259920&category=35625&sspagename=WD2V This design would work better because the metal is gripped firmly between the two verti...

I wonder what that spark ignitor on the dyna jet ebay lot that mark posted is off? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=1200&item=5954724905&rd=1&ssPageName=WDVW#ebayphotohosting It looks very similar to this one. http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=5536807660&ssPa...

You'd make a fortune, Just get the right colour and a good sales pitch
;>)

The bailey sold for £205 ($385), seems like quite alot.

How long do the petals last in those things?

Another pulse jet (Dynajet?) on ebay UK, looks mint.

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... eName=WDVW

I made a basic trolley with nylon casters and used a set of spring scales, to measure mine. Tied the scales between the trolley and a skip, and stood well back. It jumped about a bit, but you could get a reading. Not very scientific, I admit it. You can get big fishing scales from Ebay, 100lb+ there...

That things wicked!
It looks like a quality build.
How can you resist running it now youve built it?!

Tell us more, whats the spiral on the exhuast, Is it a coiled pipe preheater for liguid fuel?