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Bingo you are correct (sorta) - these trucks were geared correctly..... for their military task...... which is NOT correct for our commercial or camper task as your examples show very well.
It's not like they didn't have access to this information when they designed it. They geared it exactly how they wanted it geared, for their specs/needs. If it's "far from being geared correctly" for your needs, change it, but you didn't discover some mistake or anything.
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It seems like a lot of that rant is predicated on the line above, but it's not correct. The Michelins are rated low, but the Goodyears are either 68MPH or 81MPH, depending on the load range you get.
I didn’t say it was a mistake or am I claiming a new discovery…. Yes I am changing mine. Not 3:07 gears. Will report the good or bad.
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RANT !!! LMAO thats funny coming from you ! I like many many others in here run MICHELIN tires on their trucks and their website plainly state MAX speed on 395s to be 55mph so how is that not correct ? A little common sence has to slip between the cracks ever once in a while GOODYEAR also make a Y rated tire for the Corvette rated at 186 mph so by your interpitation does that mean everyone with y rated tires should drive at 186 mph cause GOODYEAR says so ! Call it a rant if you want but if it sinks into 1 head i would do this every day ! As far as the hwy gears i dont have a problem at all with them at all if the owners use some common sense with the higher speeds because didnt you just have to move from colorado that outlawed military surplus veh off the road ????? You just let some of these MODIFIED trucks wind up killing some folks our ability to travel on the roads will be over ! Cause we wanted to go faster !!!
You're arguing that nobody intended these trucks to go that fast, and they aren't rated to, so it isn't safe, but some versions were explicitly designed to go that fast, and had tires to do it safely. I conceded that the Michelins were rated low in my previous post, so I'm not sure why you're swooping back in like you're proving something with the picture above. All you have to do is switch to the Goodyears when you regear the axles and you've mitigated the problem. The 3:07:1 gears are out of MRAPs, so the MRAPs (which are just an FMTV with a different, even heavier body) will go that speed too.
I’m Confused?? I don’t disagree that balancing a driveline is a good idea. However, why would my driveshafts be going faster???
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Not disagreeing with this, however, one thing that is overlooked is that it's not just as simple as that. People need to look at the transmission shift points, and what speed ranges are for each gear. Now that I run the 3.07:1 gears, I find that my LMTV cruises nicely at 65MPH on the highway (low RPM in 7th gear), but is frustratingly screaming at 45 and 55MPH (it's high RPM, just before the shift point) on common roads.
I have a similar experience with my M925. Changing the tire size changed the effective final drive ratio to the point that I need to control upshifts and downshifts manually. I only see 5th gear on the interstate.
I have a similar experience with my M925. Changing the tire size changed the effective final drive ratio to the point that I need to control upshifts and downshifts manually. I only see 5th gear on the interstate.
Yeah, I've recalibrated it. Even got a new Throttle Position Sensor. Mine is one of the harder-shifting trucks, which only makes the shifting more annoying.
Yours is a WTEC2, i have seen some screenshots of the trans controller programming, and it appears that auxiliary hold was possibly enabled on non winch trucks as a default auxiliary input function(Wire 153 to signal ground 161B). When enabled this overrides the normal shift parameters and holds the trans in its current gear. you would still need to get it into 7th gear, but once there it would hold it there as you backed off to the lower cruise speed…
