Rocketman: building the Viper 50, 50 pound thrust valveless pulsejet.

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  • Опубликовано: 17 окт 2024
  • In this video I'm building my Maddoxjets Viper 50, 50 pound thrust valveless pulsejet engine running on propane. I sell kits, plans and complete engines for the Viper engine both in propane and diesel power, for kits and engines just email me at rrocketmann@charter.net and I will give you all the prices and get your engine out to you.
    All valved engines are available at www.maddoxjets.com.

Комментарии • 59

  • @highvoltagefeathers
    @highvoltagefeathers 6 лет назад +18

    I love the new format. Production quality is fantastic.

  • @willg125
    @willg125 2 года назад +7

    I would love to see a small lightweight coupe with two of these strapped to the sides. What kind of extra thrust would you get on a vehicle that size?

  • @timcoleman8964
    @timcoleman8964 6 лет назад +5

    I see you have played with the Gluhareff pressure jet engine. I spoke to him a few times when he was alive and selling plans, kits and complete engines. He said that he never could get it to work in the inline configuration. Always wondered about it's efficiency compared to other pulse jets. Love your videos, and work. Best wishes!

    • @RobertMaddox
      @RobertMaddox  6 лет назад +4

      Yes, I will be doing a video soon! it is the only engine I ever made fro a plan, I don't sell the engine but it's really fun.

    • @timcoleman8964
      @timcoleman8964 6 лет назад

      GREAT! Looking forward to watching that.

  • @oscarkromhout7621
    @oscarkromhout7621 Год назад +2

    What i really dont get about these engines. How do you prevent backfiring into the fuel inlet/ propane tank?

    • @randylyon2063
      @randylyon2063 4 месяца назад

      There's no oxygen in the propane tank so that is impossible

  • @phanorkner
    @phanorkner 6 лет назад +6

    You should invite Collin Furze out to the event. He could learn a thing or two from you. When will you be in Cedarville next? I live in Alturas and would love to come see these in person.

    • @RobertMaddox
      @RobertMaddox  6 лет назад +4

      Cool! I will be posting when I'm there and will be there a lot this summer! Colin is a big inspiration for me, not for pulsejet stuff but for starting his own channel and making it big.

    • @Kalanchoe1
      @Kalanchoe1 6 лет назад +1

      Collaboration with Colin would give you some much-needed and deserved exposure!

    • @yodu45
      @yodu45 6 лет назад +1

      the kettle pulse jet.............

    • @RobertMaddox
      @RobertMaddox  6 лет назад +3

      Actually Colin emailed me and said he may be in the states this your and might stop by, that would be cool!

  • @olafschermann1592
    @olafschermann1592 Год назад

    You are awesome! Respekt for instant start!

  • @brixtonha
    @brixtonha 2 года назад +2

    How long does a tank of propane last for the 50lb thrust?

  • @hanggliderpilot
    @hanggliderpilot 21 день назад

    So how much do these weigh? Propane and diesel tanks. Pulsejet. Kart. Want to calculate how big a hang glider I would need to attach to it.

  • @raubencreed1226
    @raubencreed1226 Год назад

    Would a 180 air intake pipe to the intake after warm-up, blow out your burn? In other words, why is the intake facing backwards from oncoming air? Thanks 👍🏻

  • @geodes4762
    @geodes4762 Год назад

    How long can these run without melting. The heat they produce looks incredible. Any way to cool them?

  • @jasonbrown7258
    @jasonbrown7258 6 лет назад +1

    I like how simple the valveless pulse jet is. Looks like they give off lots of heat and burn clean. My question is why couldn't we build a chamber around it like fire brick and run the exhaust through a insulated flue to run forced air to heat a building. Idk just a thought.

    • @iloverush123
      @iloverush123 5 лет назад

      I would think that the main problem is these are not very efficient if heat if the primary goal, and the secondary is just how incredibly loud these things are. They produce large amounts of power for their size/simplicity, and that's really it lol

    • @namibjDerEchte
      @namibjDerEchte 3 года назад

      It was a concept for building heating many years ago.

  • @user-ui6ef5ei7t
    @user-ui6ef5ei7t 3 года назад

    Bob ...the man the mythe the legend

    • @billsmith281
      @billsmith281 2 года назад

      Nope just a fool, making inefficient engines that cant be used for anything practical. He might as well be trying to build a steam engine, coz these things are useless

  • @JoyeMusiccom
    @JoyeMusiccom 4 года назад +1

    Love the engines and how you show the process of making them. I'm interested in the possibility of making an infrasonic sound weapon around 10-20Hz (instead of your 108Hz). Of course, it should be very loud, like 150 dB SPL or greater at those frequencies. Do you think simply lengthening the two pipes would do it, and/or would you go for upsizing the combustion chamber (either way will lower the resonant frequency). Estimating the SPL would be difficult; probably a prototype would be needed.

  • @estebanquito356
    @estebanquito356 6 лет назад +1

    You Sir have won a new subscriber

    • @billsmith281
      @billsmith281 2 года назад

      I bope you & bob will be very happy together

  • @Craig52-zq1bt
    @Craig52-zq1bt 11 месяцев назад

    Excellent!

  • @basedalgobro
    @basedalgobro 3 года назад +1

    thats amaizing do you have the plan for these i am currently making mine... also how is it instnt start? is it the precise geometry?

  • @stfigir
    @stfigir 2 года назад

    How do you start it without an air blower? It starts only with a spark plug?

  • @MrBen527
    @MrBen527 6 лет назад

    Looking good Bob!!!

  • @solotron7390
    @solotron7390 2 года назад

    If the engine is valveless, how is air directed out the exhaust and not the intake?

  • @preciousplasticph
    @preciousplasticph 6 лет назад +1

    Have not seen your channel for awhile, nice to see you are working with the valveless designs. Have you experimented with the gluharef jets?

  • @shadowdeslaar
    @shadowdeslaar Год назад

    I think me making a tin can version is 200% more impressive.
    Jk. THAT IS GORGEOUS. Dude. Wish I had a Workshop.
    Great work.
    (Try to use Alcohol or Something similar). (High Percentage).

  • @Doobie2100
    @Doobie2100 2 года назад

    Kickass!

  • @azagoldtwin
    @azagoldtwin 4 года назад +2

    cuanto combustible consume x minuto ...????

  • @Tony770jr
    @Tony770jr 6 лет назад

    Is there a way to make one about 20% of that size for model airplanes?

  • @will3346
    @will3346 6 лет назад

    what is the welding skill required for a project like this? can someone that just starting out make acceptable welds?

    • @RobertMaddox
      @RobertMaddox  6 лет назад

      Well, it is a tig weld and not for a real new guy, however if you find a local fab shop they can weld a rolled kit together for you in about two hours or less, not to much money.

    • @billsmith281
      @billsmith281 2 года назад

      Just use supa glue, much easier

    • @andy1way
      @andy1way Год назад

      ​@@billsmith281Would Ducktape do?

  • @anzac407
    @anzac407 4 года назад

    That one moment at the end

    • @billsmith281
      @billsmith281 2 года назад

      Yeah all that work for one moment, lol

  • @bearshield7138
    @bearshield7138 2 года назад

    nice

  • @todydn
    @todydn 6 лет назад

    I'mma put that 150 on my little boat

  • @macedorobinson1532
    @macedorobinson1532 6 лет назад

    Good

  • @อดิศรทาพรม
    @อดิศรทาพรม 5 лет назад

    ชอบครับ

  • @arnauguillaumes8287
    @arnauguillaumes8287 4 года назад

    How much fuel consume per second?

    • @billsmith281
      @billsmith281 2 года назад

      Lots & lots more

    • @devonheath6477
      @devonheath6477 2 года назад

      What kind of fuel is also relevant...I'm pretty sure they use some kind of mix of gas and propane..

  • @Spoif
    @Spoif 6 лет назад

    Try 2GF(R), 6GF(R).

  • @Jkauppa
    @Jkauppa Год назад

    Ramjet instead

  • @pjbdm1517
    @pjbdm1517 6 лет назад

    First

  • @平原光治-h8z
    @平原光治-h8z 4 года назад

    あなたのらいははいますか

  • @leenaibrahim1428
    @leenaibrahim1428 4 года назад

    I think colin is better at this job

  • @JW-ol4cp
    @JW-ol4cp 5 месяцев назад

    lame... no use for this gimmick