Static Loads
W_{fs}= Wc/L
W_{rs}= Wb/L
W_{fs }= Static weight on front axle
W_{r}_{s }= Static weight on rear axle
Dynamic Loads

Grades (θ)
W_{f }= W_{fs} – Whθ/L
W_{r }= W_{rs} + Whθ/L
W_{f }= Dynamic weight on front axle
W_{r}_{ }= Dynamic weight on rear axle

Accelerating
W_{f} = W_{fs} – Wha_{x}/(Lg_{c})
W_{r} = W_{rs} + Wha_{x}/(Lg_{c})
a_{x} = acceleration in Xdirection
g_{c} = acceleration of gravity
Acceleration relation
F_{x} = M.a_{x} = Wa_{x}/g_{c}
P = F_{x.}V
a_{x} = F_{x} g_{c}/W = Pg_{c}/(VW)
a_{x} / g_{c} = P/(VW)
Acceleration is
 Proportional to power to weight ratio.
 Inversely proportional to speed.
 Efficiency in utilizing available power depends on
 Minimizing friction losses and
 Ability to keep engine at peak power.
i would like to know how to calculate the overall efficiency of transmission including all the resistances
i would like to know how to calculate the overall efficiency of transmission including all the resistances
how to get idea of weight of vehicle? and how do i start power train calculations and on which factors will it depend?
i want to know the calculations of gearbox for a sled pull event