www.pulse-jets.com

I built this PJ but it won't start,it has .008 pedal valves&atomization fuel system,I'm trying Colman fuel,it has 10,-1/2" intake holes&a 4.25 cc. Any suggestions on jetting size,air psi,etc... will be appreciated!

John Hasler wrote:Where can I find drawings for the HPX?

I've got a drawing with the dimentions of the hpx that I built.although, it was a very rudimentary way I scaled it,may not be perfect,but it works!

Just letting you know,Curtis dyna fog still sells the head assy. part of redhead DJ, I purchased it w/a extra lock ring,&constructed a new combustion tube, it started instantly! Very exciting!!!

Hello,my name is Brian,I built a hpx scaled same as my fwe w/7.44" combustion chambers,that both run on 14oz lp tank,but freeze up at half a tank,im trying a homemade bladder system on methanol,but the pitch ossolates&won't sustain on just methanol,I would love to build a rc plane with s hpx valvele...

Hi,my name is Brian.I've built a fwe & hpx engines,that path will run on 14 oz propane,but tank freezes up,I've been trying methanol,but getting ossolateing thrust pulses,mabey a pressure,or injector prob.? Side love to try a rc plane. Can anyone help?thanks much, Brian :) PS. I've been using my fwe...

I posted a pic of my engine in valved section under,Identify this engine,mine is slightly diff. As yours,I can run it on 14oz propane can,I have better luck w/a torch flickering into the intake&set my air@20psi&start out w/air nozzle approx. 8or10" away from intake,than slowly increase fuel&move air...

I've made potassium nitrate,stump killer/&convection surgar rockets with PVC&alum.tube w/kitty litter plugs&when I forgot my sugar in the basement,it must of picked up some moisture,them contaminated rockets wouldn't fly,but thay burned ahwile,it was not what I planed? But it was a slow rocket, lol

I built a successful fwe valveless,than saw a pic of What I thought was called a hpx I built it with the same size front as the fwe, it had way more power than the fwe,I want to try liquid fuels,to try to get similar power per weight than a dyna jet,,,It may just fly a rc plane someday?so,I am looki...

I built a successful fwe valveless,than saw a pic of What I thought was called a hpx I built it with the same size front as the fwe, it had way more power than the fwe,I want to try liquid fuels,to try to get similar power per weight than a dyna jet,,,It may just fly a rc plane someday?so,I am looki...

Hi.my name is Brian.I've built a fwe&a hpx.I was wondering if there's a working methenal fuel system that will work on these engines.any ideas will be much appreciated. Thx.BrianBrian

hello,i built a fwe&a hpx/fwe,it was fairly easy&took about 10 hours to build&have them running&shaking my house!!! :) the hpx style is very simular to the fwe,the hpx is harder to build,but really says something!!! &has way more thrust than the fwe,the fwe was a perfect start point&can be converted...

hello,i recently built a fwe as my 1st project&than built a hpx as my 2nd,both have 7.5 inch conical chambers,i got them running fairly quickly on 14oz propane can,although,thay flamed out at about half a tank,prolem solved when submerging can in warm water,the HPX STYLE seems to be way more powerfu...