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Ditto55 to 58 thats it with mine.
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Ditto55 to 58 thats it with mine.
****NOT GOOD IDEA for full time use ... mayyyyyyyybe if it is nothing more than a Parade Queen.I know this is an old thread, but I wanted to ask if this idea has moved forward? It seems like an excellent idea to solve some problems.
****NOT GOOD IDEA for full time use ... mayyyyyyyybe if it is nothing more than a Parade Queen.
Reason being is easy to understand. Look under trucks with no outer gear reduction or Portal design..... notice the size of their pumpkin... hint:- they are much larger pumpkins etc. compared to axles that have some geari-ish gizmo on the ends like our trucks. They are larger cause they need thick beefy parts inside the pumpkin* because the gears in the pumpkin takes most ALL the forces.
On rigs with some geari-ish gizmo on the ends.... the forces get shared you could say 50/50 between the parts in the pumpkin and those geari-ish gizmo's... thus allowing the parts inside the pumpkin to be 50% less beefy, and smaller pumpkin needed to fit those parts in.
Take away the geari-ish gizmo by going 1:1 and now your pumpkin inner parts intended to take 50% of the forces are taking 100% of the forces.!!! Thus you will break things!!!
*yeah for simplicity; I skipped that the forces are also shared with Axle shafts... those too are usually beefier if there is no geari-ish gizmo on the ends.
****that is If understand this right.... If not, someone one will kindly correct my points..... or tarnish me to depths of hell for posting... lol.. don't really care... either one will help all of us to learn from the mistake(s).
Apologize.. quoted your post by mistake. Meant to be another's post quoted. Fixed it up above now.I am not factoring strength into the mix at all. I am just saying changing the hubs to 1:1 is stupid because of the gear ratio. It would DOUBLE the speed in every year, which would likely burn out the transmission in a hurry. Plus, why does anyone need an LMTV that will run 116?
It's a great idea with a different ratio maybe, such as 1.5:1 or whatever.
The people you hear about constantly blowing drivelines and transmissions are the same people who need to go faster than 55.I am not factoring strength into the mix at all. I am just saying changing the hubs to 1:1 is stupid because of the gear ratio. It would DOUBLE the speed in every year, which would likely burn out the transmission in a hurry. Plus, why does anyone need an LMTV that will run 116?
It's a great idea with a different ratio maybe, such as 1.5:1 or whatever.
NOPE... folk threw drive lines below 55 (w/out eco hubs)The people you hear about constantly blowing drivelines and transmissions are the same people who need to go faster than 55.
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Rev. Dr. Deke
Hey, did you have to have the Allison transmission reprogrammed when you switched to the highway axle gears? I upsized to the 53" tires on my M1081. Now when my speedometer reads 45mph I'm actually running 55mph (in 7th), so it's improved my cruising quite a bit. However, it has a tendency to drop down to 6th when I floor it. I'm wondering if I need to take it to a shop to have the transmission reprogrammed to react to the torque lag differently. Thanks - JasonI'd be too scared to try. The tires (even without a load) would be too worrisome. Combined with poor balancing techniques, steering stabilizers not build for this speed, overall design not built for speed.
I've read plenty of cruising at 75, which in itself seems pushing it.
I have the high speed gears, but am happy cruising at 62-68 at good rpms.
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The Allison transmission computer doesn't know or care what your over the road speed is. There is no programming required for gear ratio or tire size changes. The speedo is controlled by the engine computer not the transmission computer.Hey, did you have to have the Allison transmission reprogrammed when you switched to the highway axle gears? I upsized to the 53" tires on my M1081. Now when my speedometer reads 45mph I'm actually running 55mph (in 7th), so it's improved my cruising quite a bit. However, it has a tendency to drop down to 6th when I floor it. I'm wondering if I need to take it to a shop to have the transmission reprogrammed to react to the torque lag differently. Thanks - Jason
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