Forum Discussion
RCMAN46
Feb 03, 2015Explorer
The Eco waxed the 6.2.
Someone must have watched different videos than I did.
The Eco was not out of gears. The video shows many shots of the speedometer and the tachometer.
On the Eco most showed a speed greater than 60 mph and rpm's in the 3000-4000 range.
I am sure the Eco had gears left.
Both vehicles were able to pull the grade for the most part at the speed limit and had reduced throttle to stay below the speed limit.
The 6.2 always had power to spare to accelerate on demand. There were several places the ECO was not able to accelerate.
The main reason the 6.2 was gear hunting is the driver was throttling back to stay below the speed limit. When this was done there was a resultant gear change. Then the driver would notice a drop in speed and feed too much throttle thus a drop in gearing. Most of the gear changing was due to the driver. Had he used the cruise control I suspect there would have been much less gear changing.
But gear changing is not a bad thing. That is the whole purpose of a transmission. In the future we are going to see 8 and 10 speed transmissions if not CVT's if they can get the torque capabilities need for towing.
Watch how often the big rigs change gears on the same run up to the tunnel. Some of them have close to 20 gears to choose from and a good truck driver will use them to keep the engine in its power band.
The fact both were able to climb the hill at or above the speed limit not much was learned except the 3.5 ECO produces surprising power with almost 1/2 the displacement.
I would have preferred that they just engage the cruise control on both and let the computers take over. Comparing how both managed the hill with cruise control would have given me more what I would want to know.
About 95% of my towing in the West is done with the cruise control on.
Someone must have watched different videos than I did.
The Eco was not out of gears. The video shows many shots of the speedometer and the tachometer.
On the Eco most showed a speed greater than 60 mph and rpm's in the 3000-4000 range.
I am sure the Eco had gears left.
Both vehicles were able to pull the grade for the most part at the speed limit and had reduced throttle to stay below the speed limit.
The 6.2 always had power to spare to accelerate on demand. There were several places the ECO was not able to accelerate.
The main reason the 6.2 was gear hunting is the driver was throttling back to stay below the speed limit. When this was done there was a resultant gear change. Then the driver would notice a drop in speed and feed too much throttle thus a drop in gearing. Most of the gear changing was due to the driver. Had he used the cruise control I suspect there would have been much less gear changing.
But gear changing is not a bad thing. That is the whole purpose of a transmission. In the future we are going to see 8 and 10 speed transmissions if not CVT's if they can get the torque capabilities need for towing.
Watch how often the big rigs change gears on the same run up to the tunnel. Some of them have close to 20 gears to choose from and a good truck driver will use them to keep the engine in its power band.
The fact both were able to climb the hill at or above the speed limit not much was learned except the 3.5 ECO produces surprising power with almost 1/2 the displacement.
I would have preferred that they just engage the cruise control on both and let the computers take over. Comparing how both managed the hill with cruise control would have given me more what I would want to know.
About 95% of my towing in the West is done with the cruise control on.
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