Here's A Visual Demonstration Of A V8's Firing Order Using A Bunch Of Lights And Relays
To demonstrate the uneven firing order of a conventional cross-plane crankshaft V8, this guy set-up an amazing display using lights and relays
It’s important to note this demonstration applies only to more conventional ‘cross-plane’ V8s. In these engines, the firing order between the left and right banks of the engine aren’t ‘even’, meaning you get a left, right, left, left, right, left, right, right thing going on, which is what gives you the trademark V8 burble, and a less balanced engine.
Flat-plane V8s on the other hand are even with a left, right, left, right etc firing order, making for a more balanced engine that doesn’t need such hefty counterweights on the crankshaft.
In case you were wondering: according to the uploader, the fastest ‘engine speed’ achieved in this video was the equivalent of 1500rpm, which was apparently too fast for the relays to respond.
Via Reddit Cars
Comments
8 lights probably will fit in honda
Lol made my day
Wow, so cool.
wow, even sort of sounds like cam lope at the higher “rpm”s. awesome visual aide :D
Or a small two-stroke engine giving the beans.
“…making for a more balanced engine that doesn’t need such hefty counterweights on the crankshaft.” That’s a bit misleading. Flat planes are less balanced than x planes. The reason wht they don’t have large counterweights is because the materials are very lightweight. X planes are heavier, smoother but lazier to rev, whereas flat planes run a bit rough and are very rev happy. That’s why Ferraris have flat plane V8s, and I don’t think they’re double cream smooth.
Crossplanes create a rocking-couple on a crankshaft, which needs to be balanced with heavy counterweights. Has next to nothing to do with materials used. What the flatplane cranks do have however is vibration.
Drop the base!
That V8 relay sound
I can actually hear it on the dyno holy crap
So that’s how teslas v8 engine looks like
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