Question

Online trolls drive us crazy saying that our cars are big, heavy and that they drive...

Online trolls drive us crazy saying that our cars are big, heavy and that they drive like boats. Well, our solution to everything is more horsepower.

Even, in 1921, the Dodge Brothers built a boat named the SS Delphine and it had a whopping 3000 HP.

So, how much horsepower would a Challenger SRT® Hellcat Redeye Widebody need to tow the SS Delphine up the industry standard: Davis Dam Grade Climb?

Pro Tips
  • Davis Dam assumed grade = 7%
  • Air density is sea level conditions (.002377 slugs/f^t3)
  • w(weight) of the SS Delphine + trailer + Redeye = 3,922,000 + 150,000 + 4451 Lbs
  • Crr = coefficient of rolling resistance = .015
  • Assume Combined CDA is 1555 ft^2
  • SAE J2807 (Davis Dam Grande Climb) - min speed is 40mpg (59 ft/s)
  • F(drag) = 1/2p x V^2 x C(d)A
  • F(rolling resistance) = W x cos x Crr
  • F(weight) = W x sin
  • F(sum) = F(drag) + F(rr) + F(weight)
  • P = F(sum)XV
  • convert to horsepower = P(1hp/550ft lbf/sec)

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