Search found 57 matches

by nitro
Wed Oct 30, 2013 2:02 pm
Forum: Valved pulsejet forum
Topic: Hobby King Dyna jet
Replies: 18
Views: 8980

Re: Hobby King Dyna jet

They are on ebay now to.Price is going up.could buy for $65 at first.
by nitro
Wed Oct 30, 2013 1:58 pm
Forum: Valved pulsejet forum
Topic: German ER90 testing
Replies: 16
Views: 6221

Re: German ER90 testing

I stuck a fuel line 2-3in up the back end of the ER90 on my berth day & got a extra 1 to 1.5lbs thrust.Water did nothing but vapourise well.Metho & Water together was no good ether.Kerosene worked.Bit of a afterburner effect.took about 800mls a minute to do it
by nitro
Wed Oct 23, 2013 2:25 pm
Forum: Valved pulsejet forum
Topic: German ER90 testing
Replies: 16
Views: 6221

Re: German ER90 testing

I finally filed each curve on the backing plate to get the .3mm reed valves to use the hole butterfly for bending then hack sawed 12 long slots & 12 short into the backing plate to allow faster reed movement,air into the chamber & less shock wave hammer at the beginning of each reed.And finally I tr...
by nitro
Fri Oct 18, 2013 2:34 pm
Forum: Valved pulsejet forum
Topic: German ER90 testing
Replies: 16
Views: 6221

Re: German ER90 testing

Put a washer behind the reed valve today to lesson the bending & therefor snapping reed valves.Worked but what a odd way it ran this time.Ran from 8LBs thrust up to 11lbs then it would go into overdrive dropping in revs & thrust ,about 2lbs.Would blow more unburnt flames out the tail pipe to.Sounded...
by nitro
Thu Oct 17, 2013 12:56 pm
Forum: Valved pulsejet forum
Topic: German ER90 testing
Replies: 16
Views: 6221

Re: German ER90 testing

Cut 12 15mls deep slots in the reed valve backing plate today to lesson the shock wave blast & help stop the 12-13 thal reeds snaping off & let air come in though the centre more.After 3L of fuel was used one reed napped off at the base.Everything looks still perfect otherwise.Must remenber I am usi...
by nitro
Tue Oct 15, 2013 12:26 pm
Forum: Valved pulsejet forum
Topic: German ER90 testing
Replies: 16
Views: 6221

Re: German ER90 testing

Ran the ER90 today & had another 13 thal reed snap at the base after about 60 seconds of running at 12 Lbs thrust.I put two 9 Thal reeds of the same size together next and ran this for three minutes at the same thrust but in the end they snapped to bits mostly at the tips.
by nitro
Mon Oct 14, 2013 12:52 am
Forum: Valved pulsejet forum
Topic: German ER90 testing
Replies: 16
Views: 6221

German ER90 testing

Had some fun testing my ER90 last week.Took the Pulse Jet to Kukerin country car festival and while a V8 was doing a burn out started the ER90 up to get lots of people come over and want to know what it was.It only put out 9lbs thrust with the 10 & 13 thal reeds in so took out the 10 thal reed & lef...
by nitro
Tue Aug 20, 2013 11:14 pm
Forum: Valved pulsejet forum
Topic: Fastest way to start a Bailey Sport Jet
Replies: 1
Views: 1175

Re: Fastest way to start a Bailey Sport Jet

I next got the smallest & thinest spark plug in my box & turned most of the thread off that one to.Put it into my ER90 Pulse Jet right behind the reed directly in line with the incoming fuel injected fuel.Put it about 8 o-clock and not at the base this time Starting on 97.5% Kerosine & 2.5% 2 Stroke...
by nitro
Wed Jul 31, 2013 2:35 pm
Forum: Valved pulsejet forum
Topic: Fastest way to start a Bailey Sport Jet
Replies: 1
Views: 1175

Fastest way to start a Bailey Sport Jet

First.Put the small Bailey Spark Plug in a Lathe.Then turn off the metal thread so you only have enough for the brass washer & thin nut.The porsalin will now stick out heeps.Then put it at the very bottom of the Plane.100% Methanol only is needed.1.5mm main jet.7L Weed killer bottle for air.Gives 45...
by nitro
Fri Jan 06, 2012 2:26 pm
Forum: Valved pulsejet forum
Topic: Engine for Model Boat
Replies: 17
Views: 4726

Re: Engine for Model Boat

Yes.A z-jet.it Zanin Z26 from italy .I think thay would be a good Pulse jet 16.5LBS static thrust.
by nitro
Thu Jun 02, 2011 1:03 am
Forum: Valved pulsejet forum
Topic: "days of speed and thunder"
Replies: 15
Views: 7224

Re: "days of speed and thunder"

Wish everyone over there in GERMANY for the "Days of speed and thunder" a exciting time.
by nitro
Wed Jun 01, 2011 3:18 pm
Forum: Valved pulsejet forum
Topic: Stun Gun Starter
Replies: 4
Views: 3261

Re: Stun Gun Starter

I think stun guns are useless unless used for Propane Gas.A cheep sparkler works very good but soon runs out of sparks.Model T car coils and 6 Volt batteries are OK.I use a 50,000Volt electronic coil sparking at over 20,0000 Times a second to start a Kerosine & Gasoline mix.I recomend using a stock ...
by nitro
Wed Jun 01, 2011 2:59 pm
Forum: Off topic forum
Topic: supersonic valveless pulsejet
Replies: 22
Views: 8104

Re: supersonic valveless pulsejet

Personaly I think Valveless or Valved Pulsejets could if designed right could crack the speed of sound.Not much point though is there. :?
by nitro
Tue Jan 11, 2011 5:31 am
Forum: Valved pulsejet forum
Topic: Pulsejet Flight Video
Replies: 17
Views: 7838

Re: Pulsejet Flight Video

All control line pulse jet flyers know about pressured fuel tanks off the combution chamber.N,A,S,S is the group on this subject.With no valve about 4psi is about it.I have read in Big Pulse jets 17psi is normal if a one way valve is used.For RC Planes this is not needed though.
by nitro
Tue Jan 11, 2011 4:12 am
Forum: Valved pulsejet forum
Topic: pulsejet combustion in microgravity
Replies: 21
Views: 5888

Re: pulsejet combustion in microgravity

My guess is a Pulse Jet would work fine in a vacuum if desined for it.A stock Pulse jet runs off some air brought back from the outlet.If that is true that would have to change.A rocket engine works better in outter space so why not a properly decined pulse jet.