mrsmackpaul Posted August 8 Share Posted August 8 I saw this brochure for Australia the other day The three options for the Australian E7 Thermodyne Maxicruise Maxidyne I have never heard of a the Maxicruise Was this in the U.S. as well ? Paul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/ Share on other sites More sharing options...
Mark T Posted August 8 Share Posted August 8 I think it was. I almost rmember it on trucks from larger fleets (I think) Wanna say they were made with better fuel mileage in mind. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556719 Share on other sites More sharing options...
Joey Mack Posted August 8 Share Posted August 8 I do beleive back in 2002. when i was at Mack, our local grocery wharehouse, (Hannaford Bros.) bought 36 of them. Day cab and road trucks. Maxicruise, 355/380 H.P. all had Eaton Super 10 Top 2, transmissions, and Eaton rears... 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556721 Share on other sites More sharing options...
Mark T Posted August 8 Share Posted August 8 didn't they kick up the torque in the high gear or something ? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556722 Share on other sites More sharing options...
Joey Mack Posted August 8 Share Posted August 8 I dont remember that. I was fairly new as a Mack Mechanic. The only reason I remember what I posted was because I did more than 20 of the P.D.I.'s and installed the add-ons.. plus test drove all of them as part of the P.D.I. I wouldnt mind driving one today just to get back in the groove of shifting that tranny.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556725 Share on other sites More sharing options...
Popular Post Mark T Posted August 8 Popular Post Share Posted August 8 They were something for fuel economy if I remember right. Like you mentioned was a fairly common application they were used in. I think there was something about having the cruise control on at highway speeds, the power went up so they were supposed to chug a little harder when needed. I doubt there'd be much use for them down under like Paul is wondering about. 460 E Tech last good grey Mack engine. 🙁 3 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556728 Share on other sites More sharing options...
BOBWhite Posted August 9 Share Posted August 9 I was thinking the same thing Mark. The early 11.1 Detroits had a system like that where it would make something like 50+ more horsepower when the cruise control was turned on. I guess you'd want something like that in a fleet where drivers couldn't be trusted with that extra horsepower. Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556733 Share on other sites More sharing options...
Mark T Posted August 9 Share Posted August 9 That bit Jojo mentioned about the ten speeds was a thing back then. Electronics were no where near what they are now . Those ideas were obsolete before ever catching on. They were in fleets from what I remember. then some dribbled out for a second life here and there. 20 years old already. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556754 Share on other sites More sharing options...
mrsmackpaul Posted August 9 Author Share Posted August 9 So these Maxicruise motors were like a Caterpillar motor in a Special Application crawler In certain gears the Cat injector pump opened up more to give better lugging in the paddock Special Application is the Caterpillar name for purpose built agriculture crawlers When using a farm tractor, farmers dont want to stop and change gear in a tight spot when working a paddock Companies like IH and John Deere made semi power shift transmissions, Cat made the injector pump open up a lot more in higher gears to pull thru tight spots So am I correct in thinking Maxicruise was for when cruise control was fitted to trucks, possibly when cruise control was on and (possibly only in some gears ?) it allowed more fuel to make more power to pull over rises etc ? I guess cruise control might work a little along the lines of, push the clutch or brake pedal and it switches off If it does then it might be pain in the bum Climbing a hill and you need to drop half a gear, you can't split a gear because even if you flick the switch on the stick the go pedal wont back off to allow that gear to release So you flick the switch, turn cruise off, the gear changes, then your foot is used to get the power down, then push the cruise button to finish climbing over that rise You pick up speed then you need to repeat the process to get back into top gear If this Maxicruise added say, 30% more power in top gear it would probably allow most hills to be climbed without dropping a gear So looking more closely at the brochure Maxicruise horsepower curve hangs on a lot longer in the revs, but has a lower power rating overall On the left it shows the transmissions best suited, as expected, Thermodyne needs plenty of gears Maxidyne needs only half the gears And Maxicruise is in between Very interesting everyone, Im a lot more educated now than I was a few days ago I had never heard of a Maxicruise motor until maybe a week ago Amd just look at how low reving a E7 is compared to a E6 The E6 is up near tje governor all day, the E7 is 500 rpm off the governor Thank you everyone, really interesting stuff Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556757 Share on other sites More sharing options...
Mark T Posted August 9 Share Posted August 9 I believe at the time, engineeres felt there were gains in fuel mileage to be had staying in direct gear for a road tractor. So they gave it a little more power to hold on a bit longer without downshifting. Remember, stuff was simple then compared to now. Like a Super 10 was an early attempt at computer control shifting of the top 2 gears. The most reliable way (and cheapest) was in the shift between overdrive and direct. Sorta like a range change and didn't require fancy servo motors or super fast control moduals. So a little more power helped , but was programed in to encourage letting the truck do it's own thing to some degree. Some even used direct transmissions and a faster axle ratio so it'd lug back a little further with the cruise on. Usually these were on highway trucks in fleets and may not be grossed out to 80000 pounds at all times even. They were obsolete kinda fast as technology advanced quick not long after they came out. Let alone all the emission restrictions . 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556776 Share on other sites More sharing options...
Joey Mack Posted August 9 Share Posted August 9 gosh, now I wish I knew to look at how the top 2 shifted themselves. i think you had the splitter up, and it knew how to split it on its own.. dammmit.. I just wasnt deep in at that time.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556778 Share on other sites More sharing options...
mechohaulic Posted August 9 Share Posted August 9 16 minutes ago, Mark T said: I believe at the time, engineeres felt there were gains in fuel mileage to be had staying in direct gear for a road tractor. So they gave it a little more power to hold on a bit longer without downshifting. Remember, stuff was simple then compared to now. Like a Super 10 was an early attempt at computer control shifting of the top 2 gears. The most reliable way (and cheapest) was in the shift between overdrive and direct. Sorta like a range change and didn't require fancy servo motors or super fast control moduals. So a little more power helped , but was programed in to encourage letting the truck do it's own thing to some degree. Some even used direct transmissions and a faster axle ratio so it'd lug back a little further with the cruise on. Usually these were on highway trucks in fleets and may not be grossed out to 80000 pounds at all times even. They were obsolete kinda fast as technology advanced quick not long after they came out. Let alone all the emission restrictions . then of course there were the "stuff was simple then compared to now" trucks that had a dash plaque for transmission which said 20 speed and there were two sticks on the floor. much simpler and nicer. old DM 800 =20 speed / ENDT673 ,78K in the dump. no one questioned the torque curve; they were more impressed with the fact of "hey You made it here". LOL 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556779 Share on other sites More sharing options...
mrsmackpaul Posted August 9 Author Share Posted August 9 Never heard of a super 10 transmission Was this a Mack gear box ? Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556782 Share on other sites More sharing options...
Joey Mack Posted August 9 Share Posted August 9 It is an Eaton. it was a five speed gear box that you could split each gear. 1st, lo/Hi 2nd lo/Hi 3rd lo/Hi..... split it like a range shift but i was a split shift... Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556783 Share on other sites More sharing options...
Joey Mack Posted August 9 Share Posted August 9 just like a Mack 1070-B but without the lo and lo-lo gears.. Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556785 Share on other sites More sharing options...
880joe Posted August 9 Share Posted August 9 I'd take a 355/380 maxicruise any day over a 460 . I put about a million and half miles on 1. Not sure what year they started the maxicruise I know for sure some 97 vmac 2's were made 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556787 Share on other sites More sharing options...
BOBWhite Posted August 10 Share Posted August 10 I know a guy with a mid 90s international with a M11 cummins and a super 10 transmission. Never drove it but he said the previous owner would get 10+ mpg when he was pulling around his horse trailer with it. https://videos.eaton.com/roadranger/detail/videos/manual-transmissions/video/2253044304001/driving-the-super-10?autoStart=true Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556790 Share on other sites More sharing options...
Mark T Posted August 10 Share Posted August 10 10 hours ago, BOBWhite said: I know a guy with a mid 90s international with a M11 cummins and a super 10 transmission. Never drove it but he said the previous owner would get 10+ mpg when he was pulling around his horse trailer with it. https://videos.eaton.com/roadranger/detail/videos/manual-transmissions/video/2253044304001/driving-the-super-10?autoStart=true My buddy has an old FLD with an M11 and a Super 10 . He mostly hauls insulation, that in that same range for mileage too. Even with more weight it's over 6 by a lot. Mack had the 11 liter thing figured out way before any of'm. Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556798 Share on other sites More sharing options...
mowerman Posted August 11 Share Posted August 11 On 8/9/2024 at 4:21 PM, mrsmackpaul said: Never heard of a super 10 transmission Was this a Mack gear box ? Paul they were nothing but a pain in the ass,,,drove one in a kenworth,,,electric regulated gas peddle,,,if you were starting off on a hill with full load you couldnt even split or go to next gear,,, 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556876 Share on other sites More sharing options...
mrsmackpaul Posted August 12 Author Share Posted August 12 Do E7 have a number system like a E6 E6 Thermodyne EM6 Maxidine If so, what did the Maxicruise have ? Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556904 Share on other sites More sharing options...
Joey Mack Posted August 12 Share Posted August 12 I think it was a C.C.R.S. series. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556916 Share on other sites More sharing options...
mrsmackpaul Posted August 12 Author Share Posted August 12 Do you know what the letters all mean Joey ? Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556917 Share on other sites More sharing options...
Joey Mack Posted August 12 Share Posted August 12 I forgot, something about current control to the EUP's.. it controls fuel delivery and timing, if i remember right.. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556918 Share on other sites More sharing options...
The Heinz Posted August 13 Share Posted August 13 Current Controlled Rate Shaping. I have a bulletin specifying more I can try to scan here. It will take me a while to do so, busy busy busy. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556973 Share on other sites More sharing options...
mrsmackpaul Posted August 14 Author Share Posted August 14 That would be appreciated when you get a moment Paul Quote Link to comment https://www.bigmacktrucks.com/topic/74439-maxicruise/#findComment-556988 Share on other sites More sharing options...
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