DP vs Gas on Pulling
Help me understand something. If a DP has 300hp and a 6 speed transmission will it out pull a Gas A with 362hp and a 5 speed tranny if both were pulling the same amount of weight? I asked this bec...
Forum Discussion
dubdub07 wrote:MikeRP wrote:
Another way to fairly evaluate this is the weight of the Coach/ torque. So, mine weighs with my toad, 19000 lbs. 19000/426=44.6 lb per ft-lb torque. My buddies Coach 60000/1250=48 lb per ft lb torque. I think that means the rigs are very similar in the power department.
Not in price of course! His American Heritage would cost 7 or 8 times as much as my Class C. It's a powerful smooth running machine and I hope to own one one day.. But it is much more expensive to maintain. A set of injectors costs more than a new v10.
Not some might say, Mike you left our the final drive ratio and transmission interplay on the Coach performance and I did. But if you are innovative, you can develop a curve using the above for each gear of the respective transmission and compare the two. Ford has done a great job marrying the V10 to just the right transmission. And Cummins has too. It's cool to study it. But the gearing is a big big deal and the newer models have a lot of technology in the Coach's.
The v10 is made to and likes to rev. It's no problem for it to run at 4500 rpm for all of its life but it will suck the gas.
I had no problem following my friend to Colorado this last summer.
But I don't have air ride suspension and all the amenities. It really comes down to what you are using the Coach for and what you want to spend.
I debate the issue myself. Will I really like the bigger more expensive machine over the long haul? Or will I really just like the flexibility of getting into any campground with my Class C.
I don't know the answer. I expect I will spend money to figure it out. Lol
I don't think this formula is right. As the weight gets heavier, your calculations shows more TQ per pound....it should be less. You would need to invert it to get a ratio. Like the ratio for 1250 ft lbs vs 60000 lbs of weight = .0208. And the gasser's ratio would be .0224 which would actually be better. But in the light coaches, say 36000 lbs with 1050 ft lbs of tq, the ratio is .029. I believe that is right......
Dubdub you are right and you can think of it either way. I was thinking of it like the diesel pusher is pushing 48 lbs per ft-lb of torque which is worse or more weight than the gasser at 44.
