[Rev.Vassago]

The moe-rons who call for this crap don't realize that speed only plays a part in MPG. Most trucks have a "sweet spot" above 55 mph, where the best fuel economy is reached.

[Orangetxguy]

Originally Posted by Rev.Vassago

The moe-rons who call for this crap don't realize that speed only plays a part in MPG. Most trucks have a "sweet spot" above 55 mph, where the best fuel economy is reached.

Yes indeed...mine is at 1450 rpms and 64-65 mph. Of course...hills still suck.

[rank]

Fast trucks need to be re geared in order to realize optimum fuel savings from slowing down, but the savings are available nonetheless.

Keeping that in mind, EVERY truck will get better mileage by slowing from 70. It takes more BTU's to move something faster. That is a fact unless it was pushed off a cliff.

[geomon]

I read an article is some trucking rag where a guy who is a national expert in traffic flow stated that his research showed that a lower truck speed limit relative to traffic actually cost MORE fuel due to BOTH cars and trucks having to brake (consumes energy) and then speed back up (consumes a lOT of fuel) due to get around the slower traffic. Most efficient was to go with the flow. I think he was looking at the total effect that a truck with a turned down speed had on traffic around it.....fuel consumption went UP.

[rank]

I average 7.4 mpUSg at 60. The best I could ever get at 70 mph was 6.9. Same routes, same traffic, same truck, same weight.

[Dispatch_This]

drive55.org was founded by Tim Castleman.

Perhaps he'll be polling truckers' pot smoking habits next. :lol:


http://www.medicalmarijuanaofamerica...ofile/user,64/

[allan5oh]

Originally Posted by geomon

I read an article is some trucking rag where a guy who is a national expert in traffic flow stated that his research showed that a lower truck speed limit relative to traffic actually cost MORE fuel due to BOTH cars and trucks having to brake (consumes energy) and then speed back up (consumes a lOT of fuel) due to get around the slower traffic. Most efficient was to go with the flow. I think he was looking at the total effect that a truck with a turned down speed had on traffic around it.....fuel consumption went UP.

Well if traffic didn't constantly bunch together in clusters, there would be more then enough room to get around slower traffic without slowing down.

I just read a study that it doesn't matter what the speed limit is, or if there's a split speed limit, trucks usually go at least 5 mph slower then car traffic.

[Rev.Vassago]

Originally Posted by rank

I average 7.4 mpUSg at 60. The best I could ever get at 70 mph was 6.9. Same routes, same traffic, same truck, same weight.

According to the yahoos at drive55.org, you should be getting 6.4 mpg @ 70 mph. I suggest you throw out a half gallon of fuel every 7 miles, just to keep them correct. :wink:

[mudpuddle]

Clearly we have been doing it wrong all these years. We should all be driving 30 mph. In fact, We should all run around empty all the time. All that extra weight from the freight is killing our mileage. Hell, drop the trailers and bobtail all across the country. With that kind of mileage we'll all be rich in no time. :roll: