terry Posted July 1, 2019 Share Posted July 1, 2019 31 minutes ago, david wild said: Like I said they are great for dump trucks and lowbeds, that is what they were most likely intended for, no trans. was built for super heavy weights or severe abuse, some of the special autos are but normally not found in over the road trucks, the Fuller is easier to shift and when you are in the middle of a shit storm the last thing you really are thinking of is the next gear being perfect because if is not then your Mack trans will have you at a stand still, no big deal with a dump but different story with a big load on. like I said before our feelings toward the Mack trans is only based on what we deal with, we don't run dump trucks we run multi axle, dual lane and either super wide and high or we are running home empty, I don't think they were ever intended for what we do, neither was the Fuller but they seem to hold up better and are kinder to drive. (if Mack trans is so great how come the 8LL is the most popular trans in the coal feilds) Cheaper! Quote Link to comment https://www.bigmacktrucks.com/topic/57876-mack-12-speed/page/2/#findComment-426589 Share on other sites More sharing options...
JoeH Posted July 1, 2019 Share Posted July 1, 2019 I can't stand my 8LL. It was abused before we got it. Sometimes when you come out of gear and you're in the neutral zone it's still in gear for another second or two. Sometimes it hangs up coming out of gear. Hasn't blown itself up yet though! Couldn't stand the 8LL in my cousins intertrashional dump years ago either. Had a U shift pattern instead of H, and it took a good bit of effort to get out of gear. And second to third was a bear with the U pattern. Drove a Pete with an 8LL and a 500hp cat, that shifted very nicely. And I owned a 400hp Mack tractor with a 10spd Eaton that shifted nicely, except it would grind the lo/hi range transition between 5th and 6th once in a while. Quote Link to comment https://www.bigmacktrucks.com/topic/57876-mack-12-speed/page/2/#findComment-426595 Share on other sites More sharing options...
david wild Posted July 1, 2019 Share Posted July 1, 2019 NO it is because the high side of the trans would fail on a coal haul, I think some of you must be Jonestown koolaid drinkers. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/57876-mack-12-speed/page/2/#findComment-426608 Share on other sites More sharing options...
terry Posted July 1, 2019 Share Posted July 1, 2019 49 minutes ago, david wild said: NO it is because the high side of the trans would fail on a coal haul, I think some of you must be Jonestown koolaid drinkers. must be like Rob, loosing my marbles!! terry Quote Link to comment https://www.bigmacktrucks.com/topic/57876-mack-12-speed/page/2/#findComment-426612 Share on other sites More sharing options...
Popular Post Mack Technician Posted July 1, 2019 Popular Post Share Posted July 1, 2019 Maxidyne may be more right than you think...... An hour ago my boss came up to me and said "Hey, Jason, could you sign your CDL verification waiver for me....aaaaah your covered with grease, I'll catch you tomorrow". I said "Hey, how about I let it go, I'm barely doing any driving off-facility anymore.". He said "sign it, your one of only a few people here who can drive our standard transmission trucks". Ends up almost all but two of our yard workers/hwy drivers used an automatic to get their CDL and now have the Manual Transmission Restriction applied to their license. If Terry, Joe & Rob are going to be mixing drinks tonight I'll take Purple! Cause I have a soft spot for those finicky, expensive, stiff-shift, synchro-puking, triples too. Then we can work on a plan to lobby a federal CDL endorsement "MT" (Mack Transmission) for people who can drive a Mack triple. 2 1 Quote Link to comment https://www.bigmacktrucks.com/topic/57876-mack-12-speed/page/2/#findComment-426616 Share on other sites More sharing options...
JoeH Posted July 1, 2019 Share Posted July 1, 2019 I got to take my winter season boss's son out in their manual trans oil delivery truck because he needed seat time and a fresh copilot to learn a few things from for his CDL skills test. Synchronized transmissions are junk, but at least he will be legal to drive manual transmissions! Wife just gave birth to my son a couple hours ago, I'll be sure to keep one of our 2 sticks in roadworthy condition for 18 years from now! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/57876-mack-12-speed/page/2/#findComment-426617 Share on other sites More sharing options...
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