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LSI

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Posts posted by LSI

  1. I was asking about the 505.I was talking to a Sharkey driver that has a 2013.He runs from Galesburg Il to Denver and back with about 43000 in box.He averages about 8mpg.He says at 1400 rpm he is at 62 mph.That sounds like a 3:58 rear, the artical tested the 3:25.It has the 12spd auto.His truck is governed at 63.He said it only dropped 1 gear going out.Others report that going up Mt Eagle they drop 1 gear and have to back out of it towards the top cause its starting to get away from them.This is with the 505 and the 455.What I like is with the pedal to the floor you gain 200ft lb

  2. J&M in Quincy IL and I believe Jacobson in DeMoines Ia has 13spds.Sharkey is trying out the 13spd in their tanker fleet.

    I talked with Housby Mack in DesMoines Ia.He said Jacobson's trucks were 455's,60" sleeper,13spd and 3:25 rears.
  3. You can spec it with a vertical stack. That's really the only way you will be able to get that short or a frame. The vertical stack is a big system. I'll try and get picks for you tomm.

    If I can get the vertical stack like the New Volvo day cab has it will work.I may be able to use "D"tanks also.
  4. The Mack garage in North Carolina had top notch mechanics. I was talking trade and all they could talk about was the M drive, for fuel milage, durability,pulling power, they all loved it and had no issues. It had a torque rating higher then an 18b, it was around 2050 to 2200? Gearing is alot differnt for the rears with the M drive I believe. High 3's mid low 4's? Mack know how to spec trucks for exactly what your doing.

    With the 3's sounds like it has OD.
  5. I'm pulling a dry van.My current truck has 13spd ,double od and 3:58's,ISX 525hp,1750ftlb/1850 on cruse,avg 6.3mpg,1350rpm's at 60mph..If I had to do over I would spec 3:70's.It has no power on hills,but could be egr and dpf problem.My old IH with 470DD,10spd direct,2:64's would pull Mt Eagle at 55 on cruse all day.Best I can get on this truck is 35 to 40 mph.Other day I followed a 455 Mack with auto in N.Dakota.Driver said he was getting 7.6mpg with 78000 gross.His truck was holding 65mph on all the hills and passing all the big CATS.Driver didn't know how his truck was spec'd.

  6. When I spec my truck I would like to keep wheel base about 216"to 224".I would like to have twin 150gal fuel tanks and room for my ThermoKing APU.To do this I would need to have the SCR catalyst mounted behind cab, in vertical position like the Volvo's have on there day cabs.One dealer says this can be done and another says it can't be done.I need the rail space to hang apu.Any input on this?

  7. Saw posting on another site that a driver had a 2011 Volvo with a list of problems with the sensors.Truck is in shop every week.Doesn't Volvo and Mack use the same motor and SCR-EGR system?I'm not hearing of sensor problems with the mack.I would like to get a 2011 or 2012 Mack but am holding off to see how they are doing.Right now my choice is Mack or Paccar.I have heard very little about problems with these systems.

  8. Can't make up my mind weather to go with a SCR 2011 or stay with a low mile 2009 or 10 with only DPF.The 2011 with less EGR and with SCR get better fuel mileage and are reported to have less problems.I'm working on gearing now.I run 62 to 65 with 80000lbs.I run Mo,Il, and Wi.I have a 13 spd and 3:58 rears,with 515hp ISX.It might be the ISX cause its a little short on power from 40mph to 60mph.From 25mph to 35mph at 1500rpm it pulls like a dog on fire.If this was an older truck it would tell me to go with 3:70 rears,moving the power to mid range on speed..Whats your take?

  9. Trying to keep WB at about 216".Dealer said they can mount mixing hot box on back of cab.I would like twin 150gal tanks with enough room to mount ThermoKing apu on rails but room is a ?.Which type has the best turning radius?The set forward or set back axle?I noticed that the set forward had the air tanks mounted on passenger side in front of the fuel tank,and the set back had air tanks mounted on drivers side under battery box.Looks like set forward had more rail room.

  10. Where is the sweet spot on the 2011 Mp8 485hp 1750ftlb?I have been following the fuel mileage on other web sites and it looks like trucks with the 3:58,3:73 and maybe the 3:90 get the better fuel mileage than the ones with 3:32 or 3:42.It also appears if you lower the hp from lets say 515 with 3:55 to 460 or 485 and lower the ratio to 3:73 to 3:90 the fuel mileage goes up.I think the Mack sweet spot is higher than the ISX.Mine is about 1350/1400 with 515hp and 3:58's and 13spd.I am at 1350rpm at 62mph.Performance wise the 427 and 460 pass me all the time.The 350/400 run faster on short hills but I will pass them on longer hills,like 3 miles.

    I have talked to maint managers of a few large fleets and they indicated no problem with the DPF or EGR on the 2010 or 2011 and the 2011 gets better fuel mileage.If this is true They won't be able to keep up with the demand(when this gets out) from fleets changing over.But a lot of drivers don't think the trucks are cool like the Petes and KW's. and the Macks are at a higher price.But cool doesn't pay the bills,Right?

    Try to sell me on Mack!

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