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Originally Posted by 1LEThumper
Now the flat plane crank....no idea why they did that and it’s a dumb idea all the way around. If the engine in that car ever lets go it will get a normal crank back in it. They just tend to shake the car apart.....
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Flat plane cranks(FPC) work great and run smoother in Ferraris and sport bikes, it's more Ford's execution of the flat plane crank that sucks. They changed things versus the traditional FPC, in part to get a more American sound from it. I saw the following blurb on Edmunds:
"A side effect of the Voodoo's crankpin layout is an end-to-end vibration that traditional FPCs avoid. In geek-speak, the Voodoo has (in addition to the aforementioned second order side-to-side shake inherent to all FPCs) a first-order inertial unbalance. To counteract this end-to-end unbalance, the Voodoo's crank looks to have a big honkin' counterweight at each end that, say, a Ferrari V8 crank doesn't require."
They should have balanced it well and just let the darn thing sound like a Ferrari; it probably wouldn't shake itself apart- then again, they claim some of their design decisions were for packaging concerns.