Even, in 1921, the Dodge Brothers built a boatnamed the SS Delphine and it had a whopping 3000 HP.Â
So, how much horsepower would a Challenger SRT®Hellcat Redeye Widebody need to tow the SS Delphine up the industrystandard: Davis Dam Grade Climb?
Davis Dam assumed grade = 7%
Air density is sea level conditions (.002377slugs/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 is40mpg (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)
