Diesel vs gas......................
OK folks, there have been a few to many diesel vs gas threads that have shall we say gone to "Hell and a hand basket"! So if all of you would put in you BEST, no flaming reasons for going gas vs diese...
Forum Discussion
Diesel or gas? Diesel wins on engine efficiency. If gassers were the best choice to a TV, then all the commercial trucks would use gas motors - but they don't.
I'll add the following with a qualification first - I'm a degreed mechanical engineer. This topic is the stuff I studied in school and it's what a lot of BSME's do for a day job.
Any vehicle is going to reach its top speed when the engine is creating its peak hp number - as long as the gearing allows the motor to spin at that speed. Along with that statement goes this - the vehicles top speed is NOT achieved at the engines peak torque rpm. I am confident that no one here can state factually that their TV reaches max speed on a hill at the rpm the motor makes its peak torque. Plain and simple.
Torque is what gives a vehicle acceleration. Big trucks need lots of torque multiplied by low gearing so they can accelerate the load. Once they start upshifting, the rear wheel torque starts to drop and eventually acceleration stops. This is the maximum velocity the rig can manage. The rpm WILL be at the engines peak hp number.
In sum, an old friend explained it best when he said "Torque is what gets you moving, but hp is what determines how fast you'll end up going".
I'll add the following with a qualification first - I'm a degreed mechanical engineer. This topic is the stuff I studied in school and it's what a lot of BSME's do for a day job.
Any vehicle is going to reach its top speed when the engine is creating its peak hp number - as long as the gearing allows the motor to spin at that speed. Along with that statement goes this - the vehicles top speed is NOT achieved at the engines peak torque rpm. I am confident that no one here can state factually that their TV reaches max speed on a hill at the rpm the motor makes its peak torque. Plain and simple.
Torque is what gives a vehicle acceleration. Big trucks need lots of torque multiplied by low gearing so they can accelerate the load. Once they start upshifting, the rear wheel torque starts to drop and eventually acceleration stops. This is the maximum velocity the rig can manage. The rpm WILL be at the engines peak hp number.
In sum, an old friend explained it best when he said "Torque is what gets you moving, but hp is what determines how fast you'll end up going".
