Rolls Viper ASV8 turbojet hand-crank start
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- เผยแพร่เมื่อ 12 ส.ค. 2022
- An unorthodox method of starting a Viper Mk102 turbo-jet engine.
Features a 45 degree exit to divert the exhaust from frazzling my lawn and blowing down the back fence in my 30 foot garden.
wow, that fuel bottle emptying time, was jaw dropping.
yep , what fuel tank does it need in real service ????
I thought the same thing... according to wiki this specific model, ASV8 was for a Provost mk3 for which I can't find any data.
However this series of engines (Viper) was used on a British Aerospace 125 which has 5,369L tanks and a range of 1,900 mi.
en.wikipedia.org/wiki/British_Aerospace_125
Now we know why the average helicopter like the Jet Ranger for example costs fifteen hundred bucks and hour to run.
You watch that tank go down and you suddenly understand how Concorde burned off between two and four tons of fuel taxiing from stand to take-off position
My God it's thirsty!! Now I know why piston aircraft still exist.
The second time through I noticed how fast the fuel was disappearing. Great video, thanks!
Good catch.
I was thinking the same. A gallon in around 1min just idling.
@@carlosmatias474 its not really idling when hes spins it up really fast and then went for a full throttle for a few seconds
She's a thirsty girl!
Turbine engines consume an incredible amount of fuel. They burn fuel at a constant rate. Piston engines are actually much more efficient. They're not as fast, smooth or nearly as reliable though.
and that was only idling, fully cranked and fuelled to max, he and his house would pass over the neighbourhood at 30,000ft several times a day! love it, more please.
Dude. Absolutely my favorite video of the day. 1.) Hand Started Turbine Engine. 2.) 🇬🇧 3.) Backyard. 4.) Watch that turbine absolutely inhale that fuel…lbs per hour is wF if I recall…absolutely insane!!! 5.) old guys rock!
Your neighbors must love you, "GAAAAAAHHH HE'S FIRED THAT BLOODY THING UP AGAIN! " 😁
The rate it used up that fuel, I doubt the neighbours would be hearing it for long...
Say again dear?!
I can't hear you because he's fired that bloody thing up again!!!!
Our street is all gearheads. They'd probably come over with beer and lawn chairs.
Beat me to it!
Pardon me sir do you happen to have some jet fuel I could borrow I seem to have ran out.
Well done sir you are officially the loudest neighbour for the shortest amount of time absolutely awesome great job
Colin Furze couldn't hack being this guy's neighbour.
That's what I was thinking, poor old neighbours. No sleeping in here!
Not nearly as loud or disturbing as a pulse jet.
@@ParadigmUnkn0wn I think you underestimate how noisy a turbojet engine is
@@richardmillhousenixon I think you underestimate how noisy a pulsejet engine is. Not even the great howl of the J79 turbojet can approach the noise of even a modestly sized pulsejet. Pulsejets are literally rapid explosions (technically deflargations). That percussive sound travels much farther and is less attenuated by walls/structures than the high pitch whine of a turbojet.
I'm not saying this thing isn't loud, it surely is. I'd even recommend doubling up on hearing protection when that close to it (muffs + plugs). It's still not as loud as a pulsejet, and a pulsejet isn't as loud as a pulse detonation engine.
Wonderful stuff Pete. NOTHING beats a bit of tomfoolery in the back yard, Love it.
talk to his next door neighbours first before you move there if they can hear what you are saying to them.
Sounds like you've spent a lot of time beating off in the shed "fixing the lawn mower"
I've flown in the Jet Provost, propelled by one of these engines.
Often referred to as a "variable noise, constant thrust unit" because it didn't seem to matter where the throttle was set, you weren't going to go any faster.
Mm I had to change a engine at Wittering . When I asked where I could carry out post ecu ground runs I was shown an area near the Harrier ASF car park . I commented that the ground runs up to max power would dump grass and dirt on the parked cars. Got comments of our APU is bigger. Had to move to a taxiway as I blasted debris all over the parked cars. Don’t underestimate the viper it has a bit of a bite
Variable noise, constant thrust unit AKA every honda civic shifting 10 times and still only going 30mph LMAO
I had a Datsun like that once. More throttle just meant more petrol, not more power. It didn't even make more noise.
More fuel in means more power out, right? Not if you're a Nissan A-series it doesn't.
Kind of like I've heard Harley-Davidsons described, the most efficient way to convert fuel into noise without the annoyance of horsepower.
Interesting. Finer aspects of engineering. Thank you.
I live about 4 miles away and can confirm it’s a great sound.
😂😊
Dayum I'd come over to see it in action irl!
@@Jeremy_Moroyou guys soon lucky🙋
@@jrusvijr6988 Except that I live over 2000 km / 1242.7mi away 😂
I have just witnessed a jet engine being started... by _hand-crank_ !
My life is enriched, thank you Pete.
As cool as this is, it's not started by hand. You can clearly see the big startermotor driven by his 24v supply. He probably just cranked it up by hand to relief his startermotor a bit.
I had a 16 mm film print, I think it was made by Shell, which showed a gas turbine fire pump being started by a hand crank.
@@Duif_RS6 ..and it sounds like the starter motor has some kind of 2-speed low/high solenoid-driven clutch.
@@matej.m.rejsek8537 It is probably just a soft starter, so it doesn't overload his batteries upon start
Yep. This definitely isn’t 100% hand cranked because you simply couldn’t crank it fast enough either through speed or gearing by hand.
A series-wound starter is tantamount to a short circuit directly to ground when stationary. This is why they provide such an awesome amount of torque and have been used to move locomotives for almost a century and make EVs ridiculously fast…. but they draw about 1000-1500 amps on startup.
The current goes down very quickly after the engine starts turning due to the back EMF in the starter motor.
On the King Air 200 to start the second engine you do a “generator assisted” start. Since the generator produces 28V and the battery 24V (though the starter reduces this by quite a bit) it wants to take the power from the generator first which will destroy brushes and blow current limiters.. so you turn it off until the engine has lit off and is accelerating, then you turn it on so it can help start the engine.
On the King Air 350… it has a generator control unit that automatically limits the current on the generator during a start sequence.
I am amazed how quickly that thing gobbled up the fuel!! Its absolutely beautiful Pete.
Gives a whole new meaning to low flying aircraft !
My dad was a dare devil maverick who would have absolutely loved and supported work like this.
This whole thing is a credit to you - This world needs many more people like you.
When you want a patio heater but feel that the ones at the store aren't quite powerful enough
when you want your patio to be warm but the store brand doesn't have enough brake horsepower
Combination patio heater/leaf blower
@@manitoba-op4jx How the hell would they measure "Brake HP" on a Turbine engine? They measure them by Thrust....
he is a good guy just wanna heat all the neighbourhood yeah a little bit noisier who cares
@@huseyinmehmetaltun2046 🤣
2 bricks are the only things stopping this beauty from breaking free
I wondered about that myself. Sure it isnt made to give thrust but even a little thrust on something this big would be a lot 😬
en.wikipedia.org/wiki/Armstrong_Siddeley_Viper
It drives a shaft...not a pure jet thrust...
@@JohnSmith-yv6eq it is a turbojet
there is not power shaft to take the power elesewher
@@ronchappel4812 😬😬
And he was standing in front of it. I thought it would lift off right there.
That was the best visualization of a jets fuel consumtion ive ever seen ,
Love watching the dinosaur bottle deplete itself so fast. When I was in high school we took an engineering class. In this class the instructor brought two rc jet engines. They were very real jet engines that ran on jp8 and although tiny they offered a significant amount of thrust. He had an idea to put those engines on a go kart and then we would drive it around the school parking lot. For the class final exams he gave each group of students a different aspect of the project to work on. One group dealt with the stopping another on steering and other chassis items. And another group mounting engines and such. We got to use everything he taught us about 3d design and printing along with using solid works and cnc equipment. It was a truly blessed opportunity that I sadly didn’t take full advantage of. The point of this story is I remember the first time we test ran one of the engines to get an idea of how serious the brakes needed to be. We watched our fuel cell drain the same way. To me with jet engines when it comes to fuel efficiency the answer is simply no. The only way to get good fuel economy in a jet is to fly as fast as possible!
They actually get more efficient with altitude as well.
Looks like the hand cranking provides maybe 10% of the needed starting revs... just enough to stop the batteries melting down during initial rotation. Fun to watch though and the thirst is remarkable. I guess the neighbours moved away some years ago ;-)
Moved away? They probably opened an umbrella in the garden and were never seen again!
Kept the belts from slipping.
Hi Steve, yes you're quite correct in that the initial hand-cranking stops the batteries and starter motor from going into meltdown. Even then, starting current reaches 700-800 amps when both batteries are in circuit.
@@peteterpeluk1020 I notice you didn’t comment on the neighbors lol
The neighbours are still there. No one's seen the cat for a while, though.
This guy definitely knows how to maintain a good relationship with his neighbors.
The biggest cost of filming the video is paying for the neighbours to go down the pub for a few hours...
You sir, are a legend. That is absolutely awesome. She's a very thirsty girl looking at how quickly it's disappearing from the tank. Bet you get the washing dry in no time with that though! I'd love you as a neighbour if I could hear that fired up from time to time.
Blimey !!! and you stood in front of it. Amazing to see how easy that was to fire up too. Now thats got to be a project to fit that into something now.
I see the beginnings of a very powerful lawnmower.
Colin Furze has entered the chat
You mean snow blower!
Wouldn't even need blades. Just direct the exhaust downwards and run it like a hovercraft to effectively erase the lawn.
imagine the carnage
What a lovely well kept engine. I worked on those engines when I was in the RAF, on the Jet Provost.
I love how quick the fuel goes down, and that's only a small engine.
How big were the tanks in the JP ?? And what was the typical expected endurance, I actually miss seeing them in the sky over Sleaford out of RAF Cranwell.
@@PhantomMark Length wise, about 6 feet. Volume wise, 350 lbs per side. A mk3a with full tip tanks had the same volume as a mk5 without, that was 2150 lbs. Max flight time was about an hour so a typical sortie was about 45 minutes. I managed to scrounge several flight when I was at Church Fenton.
I had a car that drank about as quick as that :'D
@@Teab8g v12 jag ! 158 mph on the speedo down m5 !! You could see the guage drop !! Dropped 2 valves in 2 cylinders . That's what happens when 2 people stand up out of the sunroof at v max ! Quite naughty behaviour really !!! £8000 for a new engine in 1990 ! Daimler Double Six only 4 years old !! Good old days 😁👍👍👍
@@SimonAmazingClarke Cranwell is virtually dead compared to when I was a kid, the air was literally buzzing with JP's and Andovers etc back then, quite sad really.
I wish I had one of these, I can see the appeal, the sound is amazing. Awesome vid!
Great video.
Glad it's yours and not mine.
I hated those things when I had to work on them and now that I'm retired, don't miss them. The sound of that whine never leaves your head. Not bad now, hang a prop on it , and tip speed is unbelievable. Brain piercing scream even with ear muffs on. Love the RR engines (except this sound !!!).
Imagine living next door to this guy. "Sounds like your starting a jet engine! Oh you are". Awesome work.
I would be a happy person to have a bunch of folks like yourself living around me. No joke, it would be epic! I love stuff like this.
That's some crazy stuff. Lucky it did not pin you to the wall. As a Test Pilot we used to burn the fuel out by placing the aircraft in
deep blocks and chain it down. Run it up to about 30% and let it cook. You use bricks for chocks and divert the exhaust vector.
Brave MAN !!!!
When everyone else was busy watching the engine running, my eyes were on the fuel tank! 😁
Absolutely class video! Quality engine with a severe thirst.
Emptied that tank out in quick time .
The ultimate in geekness! Well done Pete for keeping old stuff going and alive.
I love the way the levels in that tank went down.
Look at that fuel level drop! Bet your neighbours love you! Great stuff! 👍
Awesome. Looks like it was hand cranked as fast as he could, then engaged electric starter. Amazing watching the fuel being consumed so rapidly.
I didn’t notice that until you pointed it out- and it was nowhere near flat chat!
It has a gear reduction. That is "Electric Starter" is an alternator.
@@trxtech3010 you are quite gullible and know nothing of jet engines. No way you could hand crank start a jet engine. If you would look, you would see two huge batteries and thick cable to the "alternator "
@@artmario5429 Technically he does hand crank it. This gets the rotational speed of the turbine to match the starting speed of the starter/alternator so that it doesn't torque violently when applied, but the starter does the starting, but he started the starting by hand cranking... Who made who?
@@artmario5429 The motor/generator belted to it is bump started by hand cranking before applying power. Also you totally could hand crank a small enough jet engine, but you'd need a 3 speed or 4 speed gearbox to get the compressor RPM up enough.
I can only imagine the neighbors being like "WTF is that sound? Is that a jet engine?". While you are playing with your actual jet engine.
"Yes, is this the police? Yes, I want to make a noise complaint."
Police phone operator: "And what does the noise consist out of?"
"It sounds like someone is powering up an airplane in his backyard. There's a jet engine roar."
Police phone operator: "An airplane?"
And when they might check it out calling you back (at least that is what sometimes happens here): "Upon going on-site we were able to confirm that the source of the noise complaint was a full-blown jet engine." :P
It was amazing seeing just how fast it was going through the fuel!
Coolest thing I've seen in months. Many thanks for that.
Thats the first engine I've ever seen that used more fuel than my old 1300 Morris Marina, Bravo!
Haw Haw 1300 pickup marina 4 gearboxes in as many months 1st motor I had what a crock !! At least it had a 1275 and arse end drive !! Again what a pile of pity ......
@@christopherhampson265Can beat you with the All-aggro that ate 6 transmissions in a year..
@rosiehawtrey You must have been blessed with the wildly overpowered twin carburettor model !! They made a lot of Monday/Friday cars !! At least yours didn't have any corners to go rusty 🤣🤣🤣 👍👍👍
I'm sure your neighbors appreciate that tiny fuel cell! I watched it get sucked down to almost nil during operation! Good show!
That is the coolest thing I’ve seen in a while! That fuel just draining away so fast
That is THE BEST cement mixer I've ever seen!
Incredible sound. I love the sound and duration of the spool down too.
I like how he confidently stands right in front of it with 2 bricks stopping it.
This is badass. You would be my favorite neighbor. You could fire that up every day as far as I care, as long as I can come over and watch.
I never, ever thought one could hand crank start a jet engine. I've learned another useful fact from You tube. Thank you, Sir!! Watch the fuel level in the jug visually drop before your eyes. Not the most economical engine you'll ever see...
Love it! Absolutely brilliant! There were a few of those in an ex-RAF scrapyard in Malta back in 2010, and sadly the owner of the yard asked way more than I could afford as a student back then, even though he was going to chuck them away anyways. Would've given my right arm to drag one of those back home with me and see the look on my parents' face.
Beautiful! No talking, and directly to the point.
The sound is absolutely inspiring !
What a beauty, great to see it running. great video.
This is absolutely incredible to see. What a beautiful display of engineering.
That is a beautifully kept engine and sounds superb!!
you did a very nice job on it
Thanks for the demo! Most interesting watching the fuel container empty!
‘I love how quick the fuel container was emptied!
Nicely done and a beautiful example! ☺️
Thats the coolest two-wheeled tractor I've ever seen! 😁
Every home needs one. Great video!
That fuel jug didn't empty near as fast as I thought it would. Nice machine!
Wow, how cool is that. What a beautiful piece of engineering!
What a wonderful sound
Beautiful sound, beautiful machine. Can literally see the fuel level dropping.
I will never complain about my neighbour and his hedge trimmer again! Wow!
A friend of my Father's is restoring a Jensen Interceptor. He mentioned about how one could consider fuel injectors as hypodermic syringes pushing tiny streams into the intake but, in fact, they are thick streams the isze of one's thumb.
Watching the fuel in the bottle drain like a gentleman-of-the-road draining his latest bottle of scrumpy was a true exposure to that testimony.
That was an awesome run up.
OOOoooohhhhh MMMmmmmyyyyyyy.... that is amazing!!! What an amazing experience to see that! I'd would have never believed it if I hadn't seen it.
Loved watching the fuel level go down so quickly!
Absolutely brilliant, well done mate.
LOL, Ill bet the neighbors love you!!! You could see how fast that thing was eating up that fuel!!! Great video.
That was so incredibly sweet!
Amazing, I've never heard of a hand crank on a tutban engine.
I’ve never heard of a tutban engine either🙂
@@biffaozzie2373 the neighbours tut tut and the fuzz ban you.
That was the famous Tutt-Tutt Bang engine I think you'll find....
Best video I've seen this year! Sweet unit very impressive:)
This was great. I loved seeing the fuel consumption marks on the can. I'm guessing you ran up to about 5% of the engine capacity. I suppose running to 80% would have you flying. Beautiful engine. If you ever need an air-raid siren in your neighborhood, this would probably act as a replacement.
Yeah, that's was pretty cool to see the fuel draw.. I've heard that some fighter jets can consume 20 gallons per second with afterburners. I always wanted to see a visual representation of that even if scaled-down. Today, I have.
He said in comment above the throttle up was to 60%, not 5%. This is a small jet engine, most produce thrust to move an aircraft but this one does not.
Hi Donald, it idles at 30%, producing next to no thrust. I opened the throttle briefly to 60% at one point without much reaction, but at 80% things would most likely start to happen. Hope to try that later this year. Thanks for watching.
@@peteterpeluk1020 Hi Mr. Terpeluk. Didn’t expect a reply from you here. Just wanted to say great job on the video, awesome that you could share this and build it. There’s another jet engine enthusiast guy in Chicago, if you’re ever around and want to build stuff if we can get him connected.
@@peteterpeluk1020 Thanks for responding. The 5% was a total guess on my part. Not surprised I was off. Do you have any plans for putting the engine to work, maybe attaching it to a vehicle, or maybe a powerboat? Or is it just too small for anything like that?
Oh boy, I like this sound a looot :))) Nicely done Mr. Pete :) Congratz :)
Reminds me of my time in the USAF, foward air control and I had four gas turbine for power. Two 60 kw and 2 20kw. Ran on JP4. Great running, low maintenance. The two 60’s had a 90 degree deflector. Found that if you put popcorn in a pot over the discharge, with gloves on, faster than a microwave. I guarantee it or my name is not Joe Isuzu
Right up there with the USAF radar tech that found out microwave radar did a damn good job of cooking food.
@@armorer94
and humans....
@@JohnSmith-yv6eq too right, I heard of someone getting turned to ash at RAF Fylingdales while working on a dish and somebody turned the megawatt capacity radar on. Fred didn't turn up for lunch!
i love how one can see the fuel draining like crazy
friggin brilliant backyard hobby dude
Wish I had a neighbor like you. Awesome!
Pete's Neighbor: "I am calling to make a noise complaint!"
Police: "WHAT??? I CAN'T HEAR YOU!"
Pete's Neighbor: "I SAID I AM CALLING TO MAKE A NOISE COMPLAINT!!!!!!"
Police: "WHAT??? LOOK, YOU'RE GONNA HAVE TO TURN OFF THAT JET ENGINE BEFORE I CAN HELP YOU!"
-victory for Pete
Thanks Pete, that made my morning! Used to work on indusrial gas turbines. Always used to make me smile when they started, almost like they would never stop accelerating hahaha. Good luck! :)
Dude, awesome! Your neighbors must love you 😀
Amazing snowblower, love it!
Hero
That's amazing. I'm sure you had to warn your neighbors before starting it up like that!
That's going to be one awesome go-cart when it's finished!
I love that sound of everything faster than everything else whilst starting 👍🏻
great job with that engine,,it looks and sounds perfect,,i subcribed and wanna see more of your work,,thanks
Hi John, thanks for your comments, but I still have to live with my neighbours here! Although I'm hoping to do a run at 100% at some stage, but will need a bigger fuel tank!
Brilliant! 👏🏻👏🏻👏🏻 A beautiful early example of a great British engine. I fondly remember back in the 1960s and 70s watching and hearing many Hawker Siddeley (formerly De Havilland and later British Aerospace then Raytheon) 125 executive jets screaming in and out of Luton airport! For many years, and possibly still current, a 125-600 held the noise record at Luton, at I believe some 123db!
A much widely utilised engine with many variants and applications.
en.m.wikipedia.org/wiki/Armstrong_Siddeley_Viper
That is a pleasant sound to the ear. Love it...!
Always good to see a garden gate where the brace is on the correct way round....!
Having some great (amusing) comments and yours must be in my top ten!🙂 Thanks!
I will bet that the neighbours really look forward to that.
LOL!!!!!!!!!!!!!!!!!!!!
That was damn cool!
Congratulations sir! You just invented a new way to truly burn money!!!!!!!!!!!!!
Gotta love a Brit with a Jet Engine in his Garden - something I now aspire too!
Nice toy to have in your back garden. I wonder how long it took you to perfect the line on the fuel tank for starting the power down so perfectly
That no load fuel consumption rate! Incredible!
Two fitted to the HS125 and they said it was a very dear plane to run, they use much less now.
Dude, you have some SERIOUSLY neat toys...
I wish I had something this exciting in my back garden!
Hello neighbours
He’s either telling everyone he’s here or he’s trying to upset them probably with the smell of burnt jet fuel lol…
I bet the neighbours love you!!! Awesome stuff!! That fuel doesn't go far does it?
without a doubt he is the most beloved in the neighborhood
Pete that’s about the best improvisation starter for that type of viper engine I’ve seen.. they never come with a starter and I’ve seen many people make custom adapters and different motors to get them going.. this one looks to be the simplest is the best!!!
Hi John, thanks for your comments. The belt-drive starter took me around a year to evolve. Initially I just wanted to own a Viper as a "conversation- piece", then to motor it, then to run it. When hearing that a starter of 15-20hp was required I opted for a used 5.4kW Bosch. First with single v-belt then twin, ideally a toothed single, but v-belt pulleys were simpler to make. Ok, they're well overloaded and slip a bit, but it works! The larger pulley contains a pair of sprag bearings. The three-stage start sequence (6,12,24V) with a pair of 1000CCA batteries sees the Bosch motor draw 700-800A at 18V (18hp?) It gets hot, but not too hot, and there is a compressor bleed-off to push some cooling air through the rear end.