Aircraft gravity fuel flow test

[@bbtank3000]

Backup plan: Parachute Second Backup plan: If parachute fails, do a lat spread and glide down.

[@alastairpearce3078]

Haha, this is golden

[@ArchonSoulTV]

Lmao

[@em2140]

Haha

[@papciuszkin]

Let's hope that's true

[@grizzlymelon8376]

Really hope that title will age like wine.

[@blackphoenix8932]

As opposed to warm milk.

[@rebley003]

imagine being 22 years old and scooby looks 10 times better than you. oh wait, i guess i don't have too

[@GumshoeGamer]

Same

[@daborshy4089]

I admire that he works so hard to stay muscular despite being married. I'm gonna be single forever because I don't trust myself to stay lean if I don't need to.

[@Paulie8K]

Scooby would go to a job interview shirtless. lol Best of luck with the build! Talk about dedication. Here I am debating to build my first PC.

[@scooby1961]

:)

[@aryanravishankar1126]

do it it’s just fancy legos

[@Paulie8K]

@@aryanravishankar1126 most likely am. Waiting for the RTX 3080 to go back in stock then it's go time.

[@d.b.c.t1m059]

@@Paulie8K That will probably take until 2021 - its not all bad though. According to the Zen 3 presentation AMD is actually competing this time around.

[@Paulie8K]

@@d.b.c.t1m059 Yeah I watched the presentation. I'm open. My laptop has a Nvidia GPU but if ADM comes close to the 3080 and undercuts with price, I would give them a shot.

[@THRILLHOUSEV]

This video gave me a very nostalgic feeling. I got my license when I was 17. There were always guys working/building planes at the field and they were always very enthusiastic to explain what they were doing and get a hand if needed. I spent hundreds if not thousands of hours getting mini AME tutorials like this.

[@venomhi]

Scooby has the best airplane channel on youtube, and he hasn't even flown yet.

[@scooby1961]

LOL

[@JubeiKibagamiFez]

I think these types of videos are the perfect reason for you to get a GoPro. I'd love to just watch you tinker with stuff. The plane is looking great, BTW. When I first heard you mention being an engineer, I thought it was software engineering, but you're just a full on tinkerer. It's funny how having to make money to make a living is what keeps us from living our dreams and working our passions... Unless your job way back when, was building planes, than you did actually live your dream and work your passion.

[@יובלבויום-ב2ת]

Spoken like a man who's about to die in his homebuilt airplane

[@GilBatesLovesyou]

This kind of reminds me of something I did for the first time recently. My car's fuel and brake lines rusted out so I just replaced all the rubber lines with new ones, and replaced the steel lines with copper/nickel lines that hopefully will never rust away. On some level it is quite scary to do this compared to say, brake pads or a fuel filter, as you're bending and also flaring all the lines yourself, and they're not just factory made parts you pop in and replace. It takes a lot of confidence in your own work, and I too did some flow tests/etc before actually hooking everything up and getting on the road.

[@scooby1961]

Glad you are DIY!

[@GilBatesLovesyou]

@@scooby1961 I'm not sometimes. -___- But my wallet is usually! :D

[@McMeatBag]

Random fun plane fact - The original British Spitfire had a design flaw that would allow fuel to flood the carburetor during some maneuvers, and kill the engine.

[@scooby1961]

I did not know that!

[@steven95N]

I've always wanted to build an ultralight. A lot lighter and low tech than your setup. VERY impressive. That entire build is great.

[@jamesharding8764]

Awesome very interesting so cool to see the tests being done on the aircraft

[@bigstreambo1333]

Holy CRAP! You're an aviation guy as well? AWESOME!

[@scooby1961]

Yup!

[@Mikinct]

3 things that typically cause a fuel issue. A) forgetting to add fuel before flight B) clogged fuel filters or clogged lines or hole in gas tank, fuel line freezes. Broken gauges that read incorrectly. C) not sitting down & planing ahead of time amount of fuel “needed” making a cross country flight. Running out of fuel Mid Flight.

[@rutniktrainer]

Some people worry about dieing, I worry about having never lived.

[@scooby1961]

Its a balance

[@KittenLord69]

When I think of youtube, I think of Scooby. Youre such an OG of youtube. stay safe scoobs!

[@Baasicstuff]

I'm an NDIT inspector love planes

[@electricboogaloo6917]

Next video: "I'm bulding my own iron man suit"

[@emre_d_luffy]

I hope so Scooby, much love!

[@HIHaiki]

I never knew scooby is also Aviation enthusiast ! Love everything you do

[@evasivezim]

I don't know it for a fact, I just know it's true; Scooby does all of his engineering without a shirt on.

[@scooby1961]

LOL

[@oOAngeloAmorimOo]

@@scooby1961 a shirt might mess up the airplane mass center

[@shijosunder1317]

Can't wait to see you fire up that engine

[@dazzlepecs]

What is needed to fly this amazing contraption legally under American aviation authority??

[@Mikinct]

Learned a lot when I started looking at cost of used airplanes. Compared to cars it’s a lot. A used drive able car can be had for $5,000. A cheap affordable used plane is $30k. Used old cessna.

[@MaligNyant]

absolute legend... keep it up!!!

[@faisalm2887]

i always wonder what if u had a son. Son raised with a dad like u. What great person he will be

[@scooby1961]

Unfortunately it doesnt always work that way. There are plenty of great parents who end up with kids who are train wrecks and visa versa. Its almost like parenting technique is irrelevant and its 100% genetic how the kids will turn out.

[@faisalm2887]

@@scooby1961 oh god u really Open my Mind. God bless you scooby agree nowadys so many things effect the kid TV, social media, frineds..etc

[@TheFrenchMansControl]

Isn't this assuming the failure mode of the fuel pump is fail-safe? In a car at least, when the fuel pump goes it actively starves the engine (although I don't think it has gravity on its side much). The other thing you have to assume is that the fuel pump failure is detected before take off. If think that's why you see a lot of people throw the brakes on and ramp the engine - you can't fake your way out of that. As long as the runway is long or there is a field the other side, the risk is pretty low anyway on take-off engine failure. Just don't do take-offs facing mountains or off the side of cliffs!

[@poulpinator972]

Hi Scooby, very interesting all your videos about the Dotty, all the other also ;), what are all the labels on the props ? visible at 13:00 (maybe I missed some videos lol), love from SZ !

[@scooby1961]

good eye! Those are angle measurements of each blade. I repeated it 4x per blade to insure they were right.

[@TheDa6781]

got to watch out for that warp core containment breach, otherwise everything looks fine

[@straightlevel.cruising2644]

When is the first official flight scheduled? Will there be unofficial flight tests before that? What is the difference between official and unofficial in this context (if any)? Duration, flight altitude, number of passengers or all of the above? Good luck and compliments for a very impressive job!!

[@scooby1961]

November probably

[@zerotrace000]

Hi Scooby, I am curious about your fuel flow design. You mentioned that if the fuel pump failed, the fuel should still flow via gravity through the fuel lines to keep the aircraft flying safely. If this is the case, why have a fuel pump at all? Why not get rid of the pump so you have one less thing to worry about malfunctioning. I sort of feel my question is silly and I am sure I am missing something crucial in the design. BTW, I have much respect for all of your different areas of knowledge. Respectfully, Z

[@RamenReignss]

I thought Scooby feeds his plane protein shakes.

[@a.9913]

That title worries me scoob, be careful dog.

[@Marxone]

Just curious, when small plane is grounded for a month or so, is it better to keep the plane system completely empty (fuel)? Tank only when planning flight?

[@scooby1961]

You definitely dont drain the tanks, too much work and no advantage I see.

[@EveryDooDarnDiddlyDay]

Good luck, Scoobert. Stay safe.

[@Gutsmagoria]

"Let me show you" (turns around for a back posing routine) I legit thought that's what I was seeing!

[@rpbishop3079]

Craigslist... and I thought this was KZbin !

[@EdwinYee1]

how about a video on basic avionics, using your plane as an example?

[@harizotoh7]

Do you have experience flying other planes or an ultra-light?

[@scooby1961]

I have flown microsoft flight simulator so how hard could it be?

[@steven95N]

@@scooby1961 Not too hard! Once you're in the air, just don't stall her out. That's about all there is. That hardest part is takeoff and landing.

[@GilBatesLovesyou]

I did not know carbureted airplanes have gravity feed fuel lines. Maybe you explained it in another video, but was there a reason you went carbureted vs EFI? Being younger I find it the opposite of a lot of people your age, in that I find carburetors basically voodoo to work on and honestly don't totally understand them (I mean, I understand the principle of engine vacuum pull fuels through a tiny jet hole and atomizes it into the engine) and am more comfortable with a traditional EFI setup. Newer direct injection is definitely weird, especially in that most run a mechanical injector pump separate to the in tank fuel pump. Was your rationale partially that with a carb and gravity feed you'd never need to be reliant on a fuel pump as a point of failure? I'm assuming as well this engine has a mechanical fuel pump driven by the cam, and not an electric one?

[@scooby1961]

$15,000 more for EFI :)

[@GilBatesLovesyou]

@@scooby1961 Yikes. Here I am complaining Megasquirt is $500. :/

[@scooby1961]

Lol! Yes. The basic 100hp engine in 20k. The efi is 35k

[@GilBatesLovesyou]

@@scooby1961 Not that I've ever seriously considered planes much (have considered getting into unpowered gliders, though...) but one thing that's always fascinated me is Mazda rotary powered aircraft. Rotary engines from an engineering perspective always seemed like the coolest things to me. Obviously there's tons of disadvantages but they sound awesome and are so small. Was there a reason you went with the engine you did over a car engine? I've seen all sorts of car engines in aviation use when looking up tuning information. One engine in particular I remember is the Nissan VG30, when I was looking up information about Z31 and Z32 300ZXs. Is it something to do with FAA inspection related stuff/regulations?

[@Owl_Owl130]

Best of luck Scooby! 🥳

[@PatrickKendrick1988]

Be careful out there

[@d1ckyj0nes]

"EXPERIMENTAL" on the side: is that a legal thing?

[@scooby1961]

Yes, legal requirement

[@rtyrtyrtyus]

So, is this to make sure there is enough fuel flow during high demand from the engine? I had an old lawnmower and the guy who sold it to me said it didn't work. It turned out the tank wasn't high enough from the engine and gravity wasn't filling the carburettor quickly enough for demand. The stupid thing had a very small float chamber. Again, poor design because the tank was in the original position. I had to modify it, and suddenly I had a working engine.

[@cristobalpacheco4202]

That’s a pretty big hanger is that something that you have to rent at the airport?

[@1greener]

These video titles gonna seem ironic if he actually dies

[@thisguy8100]

What engine is in Dotty?

[@AndyAttrition]

It there a reason you have not not run this test at a realistic inflight Angel of attack?

[@cjm2080]

9:46 classic scooby 😄

[@sorrenable]

Just wondering Scooby-Do u always walk around the airplane hangar naked?? (Joke). Well done Mr.Scooby!!

[@rokasmalakauskas]

0:45 was a hidden lat flex

[@frankpearson1840]

Tom Cruise is checking over your fuel pump behind you btw. 🤣

[@scooby1961]

LOL

[@frankpearson1840]

@@scooby1961 There is none higher than the Cruise. 😂

[@chidori455]

looking shredded papa scoob

[@malakispanien]

Listen dude, don't be so sure as you ain't got a cristall ball. Titanic wasn't meant to sink either...

[@RandomTask]

When’s the test flight likely to happen?

[@scooby1961]

hoping in november!

[@R2B2YT]

Very interesting

[@scooby1961]

Glad you think so!

[@JitinMisra]

you made a video, about somethings worth dying for, now you made a video why you won't die ...LOL . But in all seriousness, you are great guy , and are great example and motivation of how to live life.

[@michaelgoodwin593]

I demand an explanation as to why its taken you 12 years to build this please

[@Preidon666]

Try building a plane yourself,idiot

[@nuzzi6620]

*19 years

[@mbsfaridi]

Michael Goodwin I think you can find his progress on his website.

[@skaf008]

Scooby you great , hope everything is well , have a great day

[@coachjbates]

Scoob where is the gold plan

[@orlanmedina3693]

How many litter rotary engine is it?

[@scooby1961]

its a flat four, not a rotary

[@orlanmedina3693]

@@scooby1961 i thought because of the name. Why not going fuel injected? Safety?

[@mayukhsen8195]

God please make sure this is true, and if possible.... Forever.

[@swoletrev6123]

That does not look good. You want this up 4 feet because you can put another lean to for a deck. The higher the camper the better slope for the second lean to. Starlink internet, propane 240v generator, 3000w 240v inverter, nissan leaf batteries, 3k-10k solar. Holding tank

[@f_a_d_u_s]

Let's hope this title is true

[@Pappderbarp]

I wonder if you could turbo a plane?

[@scooby1961]

yes, this engine actually comes in a turbo version which is very handy for high altitude strips

[@TeeDhirav32]

Scooby becareful

[@js6644]

stay safe bro

[@ezzony]

If you do die I'm gonna refer you back to this !!!!!!!

[@mirmir9368]

Dude u have a great body

[@Galahad993]

Better knock on wood fella

[@balex1109]

At least the memes will be crazy if it really goes wrong, considering how often he mentioned that he won't die. But, of course, I hope for the best possible outcome! An actual working DIY-airplane is every man's wet dream. Good Luck, Scooby!

[@GiantAnteatersRkool]

Again, I have to pee. And you're not even filming in your back yard this time

[@NoMoreForeignWars]

Does this guy ever wear a shirt?

[@igloo2862]

People said the same thing about the titanic

[@meatsac89]

This title reeks of bad premonition

[@scooby1961]

Lol

[@HolysMoly]

So you're going to fly shirtless right?

[@HolysMoly]

:)

[@scooby1961]

depends on how hot it is!

[@Lucky_Moe]

Wtf?,!?!

[@wilsonlj7543]

First

[@malassadas]

This video didn't age well

[@scooby1961]

LOL

[@donx5667]

Scooby you are not a good person. You are insulting those who have died from light plane crashes. Are you saying those who have died are too stupid to check for clogged filters?