searching for a coach
Well the learning curve continues , I drove my first class A's today and learned a little bit but now have more questions. First coach was a 35 foot bounder on the ford chassis and I knew from my last...
Forum Discussion
Particularly for those new to looking at diesels, HP is "of interest", but torque is at least as important.
Example: The Cummins ISL has 400 HP (not that much more than smaller motors), but it has 1,2000 lb-ft of torque at 1300 RPM. So, you can climb a lot of grades at nice, low RPM. We very rarely run over 1,500 RPM.
Indeed, as I am sure others will post, all 400 HP engines, gas or diesel will move the same weight and size coach up the same grade at the same speed. BUT is it at a "sustainable" RPM or is the engine screaming to produce that power. Remember, this is supposed to be fun, and sitting next to an engine at 5,000 RPM is not very relaxing.
Example: The Cummins ISL has 400 HP (not that much more than smaller motors), but it has 1,2000 lb-ft of torque at 1300 RPM. So, you can climb a lot of grades at nice, low RPM. We very rarely run over 1,500 RPM.
Indeed, as I am sure others will post, all 400 HP engines, gas or diesel will move the same weight and size coach up the same grade at the same speed. BUT is it at a "sustainable" RPM or is the engine screaming to produce that power. Remember, this is supposed to be fun, and sitting next to an engine at 5,000 RPM is not very relaxing.
