Why Dragster Engines Only Last 4 seconds

Avaldati 18 mai 2021
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Top fuel dragsters are the most powerful cars built today. One Top Fuel dragster's 500-cubic-inch Hemi engine makes more horsepower than the first four rows at the Daytona 500. It is said that drivers experience more G's than an astronaut headed to space. They have spark plugs that are strong enough to weld metal. Their flame front's measure in temperatures up to 7000 degree's. Assuming that all of the equipment is paid off, the crew works gratis, and nothing breaks, each run costs an estimated $1000 per second and that crazy cost is because a dragster engine needs to be rebuilt EVERY RUN.
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  • Jeremiah ought to be a teacher. Incredibly good style of education/explanation

  • "The inertia of the piston reciprocating up and down exponentially increases the effective weight of a piston as your RPMs go up". False. It's a linear relationship. You are confusing inertia and momentum.

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  • So uh... is there any part of it that isn't replaced every run?

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  • Top fuelers do not use overhead cams as you show and rods break because uusually because of another failure, as they are only used for so many runs.

  • Miniature: five secs Title:four secs Prezenter:Yes

  • After watching CD and this vid i now have a much better understanding of top fuel engines

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  • That more power joke is getting a bit old🤷🏻‍♂️

  • U can notice they don’t back up videos, instead get old clips from EEclone

  • Most TF dragsters use copper head gaskets. Don't think MLS gaskets would hold up.

  • Nitromethane origins is it is rocket fuel.

  • Both images are hemispherical head design. When ever the spark plug is top dead center and the valves are on either side, its a hemispherical design. When the spark plug is off to the side, that is a non hemispherical head. The whole idea behind the hemispherical head is the spark plug is top, dead center. The flame front then comes straight down on center of the piston. Which allows much more advanced timing and smoother, more power out of the engine.

  • 1:00 I had to rewind

  • Premium user here, yet I get ads, I am unsubbing, sorry when ads are forced onto me (see what I did there), I leave for that exact reason because I know that you have sold your channel to these brands with contracts. Shame really because this channel had and probably still has some good content.

  • Motorcycle show!! Do it

  • “Your average car can last over 3,000 hrs of run time.” At an average speed of 35 mph, that equates to only 105,000 miles. An average of 50 mph equates to 150,000 miles. Obviously it depends on how fast you drive, but both those figure seem very low to me!

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  • Thought they were pushrod motors ..

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  • would LOVE to see a motorcycle show on the channel, that’d be awesome

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  • I'm amazed that the economics of top fuel drag racing allows it to exist

  • 1:19 Google meet (PC) background be like:

  • 3:48 that's 1000 more revs then the engine the Panda Trueno gets after having the first one blow in 2nd stage

  • "Bombs?"

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  • The motors in dragsters use a centrally mounted camshaft , which use roller lifters, push rod and rocker arms to actuate the valves. Your animation shows a Double Over Head Cam (DOHC) set up which would indicate four camshafts, two cams per cylinder bank. Just though you should know.

  • Love it!

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  • Hey man correction on the video. Top fuel cars do not use MLS gaskets. They use a solid copper gaskets with o ring groves cut in the head with steel hoop rings on the cylinder sleeve so it cuts into the copper and presses it into the cylinder head

  • Good job!! More drag stuff! Mebbe some discussions of the various classes of dragsters?

  • I never understood dragracings, but at least i understand how the engines of these "cars" work Once again, Donut Media rocks!

  • I'm no expert ...... but for a man to speak non-stop about such extremely complicated mechanics ........ at such a young age ....... well , all I can say is you must've rebuilt your first engine (solo) by the age of 6 or 7 . [And I don't mean lawnmower engine , I mean a Chevy 350 4 bolt main blablabla edlebrock blablabla Holley 4 barrel carber -blablabla-ator] Your from the planet Krypton aren't ya .. haha . jeezus

  • this guy's great at what he does. and he's funny. carry on

  • Do a motorcycle-related show

  • What bearings do dragsters use? Are they roller? Or what we buy

  • Wish i could rebuild my engine in 40 minutes

  • Like how said TQ rather than HP on the clutch... Also many ppl think higher octane the hotter the engine runs..no.. And another myth..i need more power ill use a hotter spark plug.. No it robs hp

  • Should talk about rotary dragsters

  • more motorcycle content on Donut pls

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  • “Conecting rods”

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  • Too many commercials and they are way too long. Was going to recommend to my fellow gear heads but can’t do. See yah.

  • Can I get a video explaining why I only last 4 seconds

  • To understand what happens in 4 seconds i have to watch a 16 minute video

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  • Can’t wait until Elon gets involved. EV will dominate

  • My master plan to take over the funny car world will be to create a CVT transmission that can handle 10,000 horsepower.