ws721 Posted May 13, 2014 Share Posted May 13, 2014 Found a Mack 12 speed for sale. Have been told that drivers either love them or hate them. I have never driven one. Truck has E9 and is a road tractor that doesn't haul heavy. I have also heard that 12 speed parts are scarce. What do you folks suggest? Quote Remember if it's got a hood it's no good! Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/ Share on other sites More sharing options...
mrsmackpaul Posted May 13, 2014 Share Posted May 13, 2014 mate there are gear box's and theres gear box's I have never heard of it been hard to get parts for a Mack 12 speed and if we can get them here in Australia Im sure you can get them over there easier to drive than a 13 speed roadranger and a lot tougher I no what I would prefer 12 speed every time seeyaPaul 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245265 Share on other sites More sharing options...
Bigdogtrucker Posted May 13, 2014 Share Posted May 13, 2014 I LOVE 12 speeds,i've driven them a lot in tri-axle dumps. Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245269 Share on other sites More sharing options...
2stacksuperdog Posted May 13, 2014 Share Posted May 13, 2014 12 speed 1 Quote Matt Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245273 Share on other sites More sharing options...
rick harper Posted May 13, 2014 Share Posted May 13, 2014 12 speeds are good. parts are becoming a big problem. Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245276 Share on other sites More sharing options...
Superdog Posted May 13, 2014 Share Posted May 13, 2014 If you are going to put it in your Cruiseliner,make sure it isn't the older 2 stick version,that might present a problem. Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245285 Share on other sites More sharing options...
2 STICK PUPPY Posted May 13, 2014 Share Posted May 13, 2014 I remember a super liner we did work on I forgot the year but it had round headlights .. but it had a 12 speed with 3 sticks in it I thought it was cool looking Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245288 Share on other sites More sharing options...
ws721 Posted May 13, 2014 Author Share Posted May 13, 2014 LOL. OK OK. You guys sold me. Yes its for the Cruiseliner and yes its 1 stick. By the way, I had a gentlemen call me who claims he use to own a 2 stick Cruiseliner. How could that be possible? Quote Remember if it's got a hood it's no good! Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245308 Share on other sites More sharing options...
terry Posted May 13, 2014 Share Posted May 13, 2014 12 spd, the 13 spd will be worked on about 3 times to the 12 spd ! Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245309 Share on other sites More sharing options...
REEL ADDICTION Posted May 14, 2014 Share Posted May 14, 2014 If u are gonna have multiple drivers I would go with the 13 spd if it's just u driving I would go with 12spd Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245315 Share on other sites More sharing options...
Brian Blaylock Posted May 14, 2014 Share Posted May 14, 2014 Hey 2 Stick Puppy do you know if this was a factory set up or not? Thanks Brian Blaylock Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245320 Share on other sites More sharing options...
gearhead204 Posted May 14, 2014 Share Posted May 14, 2014 how much cold weather work do you do with that unit?how much reverse work/ speed do you do?for me if doing a lot of severe winter work I would go 13 speed (cuz you always have a gear) if the air shift screws up murphys law says never in a good place! if you find your self pushing trailers as much as pulling them then the 12 speed is a gift from GOD! from a mechanics stand point the 12 speed is more of a bear to work with being triangular shaped and 3 piece. I will build adaptor plates for the trans jack because I don't like the thought of that big bastard on top of me! (don't trust the OTC arms) 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245350 Share on other sites More sharing options...
ws721 Posted May 14, 2014 Author Share Posted May 14, 2014 Thanks for all the input! Im the only driver, its a summer truck. I have an 85 MH for the winter time. ! question I forgot to ask. What is the overdrive ratio of a 12 spd? Do they make different overdrives? Quote Remember if it's got a hood it's no good! Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245366 Share on other sites More sharing options...
41180 Posted May 14, 2014 Share Posted May 14, 2014 If you like the sound of grinding gears and vibrations go with the 12 spd 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245371 Share on other sites More sharing options...
Bigdogtrucker Posted May 14, 2014 Share Posted May 14, 2014 If you like the sound of grinding gears and vibrations go with the 12 spdGood friend of mine bought them new in dump trucks from when they came out until a few years ago.All the ones I've driven shifted like a hot knife through butter,never an ounce of problems with any of them.(minimal drivers and well maintained)Never any vibrations either,just like a six speed but twice as good . 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245373 Share on other sites More sharing options...
41180 Posted May 14, 2014 Share Posted May 14, 2014 I know the ones I drove and were around as a kid were not so good Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245383 Share on other sites More sharing options...
fullfuel01 Posted May 14, 2014 Share Posted May 14, 2014 Logtruckman,The keywork in your response is 'kid'. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245420 Share on other sites More sharing options...
Popular Post Lmackattack Posted May 14, 2014 Popular Post Share Posted May 14, 2014 I like the 12 speed for 3 reasonsYou can drive it like a 5 speed when emptyYou can drive it like a 5 speed but have the option to split the gear when you need to get a run at a hillYou have 5 reverse gears13 speeds are nice. But I would rather have a 12 speed behind a Mack 4 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245425 Share on other sites More sharing options...
Superdog Posted May 14, 2014 Share Posted May 14, 2014 OD ratio is .78 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245433 Share on other sites More sharing options...
Superdog Posted May 14, 2014 Share Posted May 14, 2014 LOL. OK OK. You guys sold me. Yes its for the Cruiseliner and yes its 1 stick. By the way, I had a gentlemen call me who claims he use to own a 2 stick Cruiseliner. How could that be possible?When Terry Manders was here last year picking up some trucks,he told me years ago they built a Cruiseliner glider and used a Duplex in it.He said it took alot of modifying,but they did do it once. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245434 Share on other sites More sharing options...
ws721 Posted May 15, 2014 Author Share Posted May 15, 2014 Wow. That must have been interesting with the shift tower set up that Cruiseliners have. .78 is a decent overdrive. Quote Remember if it's got a hood it's no good! Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245482 Share on other sites More sharing options...
dm 800 Posted May 15, 2014 Share Posted May 15, 2014 12 speed in my dm 800 and real nice i have driven trucks with both and i would go with the 12 speed 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245495 Share on other sites More sharing options...
41180 Posted May 15, 2014 Share Posted May 15, 2014 Logtruckman,The keywork in your response is 'kid'.I will admit I got used to driving a 12 speed after a while but I learned to drive with a 18 spd fuller . I learned you have to shift a 12 speed nice and slow with alot of finesse. My dad ordered his 89 superliner with a 12 spd and hated it 4 yrs later he put a 18 spd in it Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-245570 Share on other sites More sharing options...
oilburner Posted May 24, 2014 Share Posted May 24, 2014 I have never seen a one stick 12 speed how did that work, I had a guy tell me he had a 12 speed in a r model once but it was a one stick 10 speed that shifted like a super ten. If you like a deep reduction and a close ratio with a overdrive I would go with a 15 speed fuller. Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-246640 Share on other sites More sharing options...
oilburner Posted May 24, 2014 Share Posted May 24, 2014 The 15 speed and a 300 Mack with a 4.44 ratio I drove would pull right with a 425 cat. It could hav been a 350 that's what the owner of the truck said it was but it looked like a 300 it had that tip turbine on it. It was a good set up Quote Link to comment https://www.bigmacktrucks.com/topic/35698-12-spd-or-fuller-13-spd/#findComment-246643 Share on other sites More sharing options...
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