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
Ace,
When doing those figures, also use the first gear or low ratio in the trans too! I have a rig with 336 lb ft of torque, 4.33 gears, but a trans ratio of 10.08-1 in first gear. That rig WILL out pull ANY of my 2 pickumups, be them gas or diesel! Both of which have more torque than that rig with its NA 7.3 diesel in it!
Also, make sure you factor in the tire diam. Bluenotes Chebby has 30.5" diam tires, your Dorf 31.5" diam tires. So your RA ratio is effectively about a 4.15 or there abouts! So reality is, Bluenotes rig is probably producing more torque to the rear wheels than you are! Of course, I have "NOT" done the math, so I may be wrong, but the comparison will be more equal than what you have shown!
Any way, torque is what you need to move the thing initially, HP keeps it going!
Also, somewhere I have posted a formula that will tell you the max grade in % terms that you can go up with a given rig, based on tire diam, torque, axel and trans ratio. Quite interesting to say the least. My navistar is good to 30% at 30K lbs, my 620 lb ft torque dmax, all of 24% at 20K lbs, my old 6.5TD due to the manual trans with 385 lb ft of torque, 30% a 20K lbs. yet the dmax has a 10K lb higher tow rating! There is more to a good tow rig than the tq multiplication!
Please note, I am NOT saying a gas is better/worst than a diesel. BUT, we need to look at ALL the factors to decide. Torque, gearing, both trans, and axel ratios, with a tire diam thrown in, payload, spring capacities, etc. Otherwise, IF you go by JUST the power part, you will have a very BAD tow rig. Been there done that!
marty
When doing those figures, also use the first gear or low ratio in the trans too! I have a rig with 336 lb ft of torque, 4.33 gears, but a trans ratio of 10.08-1 in first gear. That rig WILL out pull ANY of my 2 pickumups, be them gas or diesel! Both of which have more torque than that rig with its NA 7.3 diesel in it!
Also, make sure you factor in the tire diam. Bluenotes Chebby has 30.5" diam tires, your Dorf 31.5" diam tires. So your RA ratio is effectively about a 4.15 or there abouts! So reality is, Bluenotes rig is probably producing more torque to the rear wheels than you are! Of course, I have "NOT" done the math, so I may be wrong, but the comparison will be more equal than what you have shown!
Any way, torque is what you need to move the thing initially, HP keeps it going!
Also, somewhere I have posted a formula that will tell you the max grade in % terms that you can go up with a given rig, based on tire diam, torque, axel and trans ratio. Quite interesting to say the least. My navistar is good to 30% at 30K lbs, my 620 lb ft torque dmax, all of 24% at 20K lbs, my old 6.5TD due to the manual trans with 385 lb ft of torque, 30% a 20K lbs. yet the dmax has a 10K lb higher tow rating! There is more to a good tow rig than the tq multiplication!
Please note, I am NOT saying a gas is better/worst than a diesel. BUT, we need to look at ALL the factors to decide. Torque, gearing, both trans, and axel ratios, with a tire diam thrown in, payload, spring capacities, etc. Otherwise, IF you go by JUST the power part, you will have a very BAD tow rig. Been there done that!
marty
