LML Thread.
- Thread starter duramaximizer
- Start date
Um, are you smoking something, or did I miss something???
You missed somethings....
thers a article in the newest Diesel Power mag about Allison teeming up with some one to make a non conventional auto. trans has no torque converter and no gears i forget what they call it uses hydroloc pistons to change the drive ratio can keep the motor in its power band at any speed
some one whos read the article recently could give more details
thinking out side the box for sure there
dont recall it that's whats going behind the 2010 motor.
That trans is years away and may never make it as it is.
x2 I agree...There are lots of other things that can be improved upon with existing automatic technology. The last thing we need at this point is to complicate things with a completely new design transmission...
ben
no... you are confusing a CVT with a hydrostatic transmission. they arent the same thing.
And yes, HYDROSTATIC tranny's are incredibly durable, long lasting, and will take a lot of abuse. In any tractor I would take a hydrostatic trans over a manual trans ANY day, especialyl doing FEL work. With regular fluid and filter changes, a hydrostatic tractor tranny will far outlast a traditional clutch/manual tractor trans. When I used to work at a tractor dealer we had more than a handful come in with junk gearbox's, belts, clutches, etc. Only saw one bad hydrostatic transmission, and that was because the fan broke off and it overheated and wrecked the seals in the charge pump.
I love them, and if you take one apart they arent as complicated as they seem. Infinintely variable speeds, constant torque at all speeds and at 0rpm (like a PM electric motor), hardly any wear-parts, easy to cool efficently, and constantly lubricated by high pressure.
And of course one of the main side benefits of a hydrostatic tranny is you can tap into the charge pump's external releif control-pressure port, and run hydraulic cylinders, PTO stuff, etc...
ben
And that's why a JD 9520 comes with a Power Shift (gears and clutch) and not a hydrostatic?
Don't confuse lawn tractors with real tractors.:hello:
I disagree. We need to stay ahead of the market. They can make IVT's that are solid enough for tractors at 400hp and a bazillion foot pounds of torque and I think that they could be made small enough to fit in a truck. Agco's/Fendt's design claims 92% of the hp makes it to the ground when turning 50 inch rubber. :cool2:
Not to mention that if they hold hp well, they have the potential to make truck pulling/ and drag racing that much more fun.
The current design sucks personally. It's inefficient, they are not smooth shifting. They are way behind. CVT's are the future. It will be just like the common rail the first person to the market with a SOLID design wins. The duramax crowd might as well be there first.
They have a factory engineered check ball boost system. TransGo Jr Kit from the factory
Allison bought controlling interest of torotrak last fall. I think it was more to bury their technology than to utilize it.
Brayden
And that's why a JD 9520 comes with a Power Shift (gears and clutch) and not a hydrostatic?
Humm, Cat is ditching the power shift in their heavy dozers...
They have a factory engineered check ball boost system. TransGo Jr Kit from the factory
Gee I hope transgo doesnt find out..
And that's why a JD 9520 comes with a Power Shift (gears and clutch) and not a hydrostatic?
who said anything about lawn tractors? If it has an FEL its not a lawn tractor. The ONLY downside to a hydrostatic trans is they use a little more fuel and are slightly less efficient.
not all powershift's have a clutch, and I would certainly consider them closer to an automatic (in terms of how they work) than a manual trans...
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I so hope that is not true.
why? IMO Its just something more complicated thats harder to diagnose and more expensive to fix when it breaks. Theres nothing wrong with the 6-speed trans as-is. Theres about a hundred more important things to spend their small amount of R&D money on than transmission stuff...
ben
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Fuel Economy. That trans would be worth a minimum of 10%. Possibly more. Not to mention that overall performance gain. Quicker ET's stock, better pulling distances, faster speeds up mountain grades, not to mention precision when backing up to a trailer slowly, or plowing snow with a faster reverse and fuel economy, let alone smooth high speed power forward to power reverse like shuttle shifts in a tractor.
Have you ever rode in a IVT tractor of any kind? Deere, Fendt, Agco etc? They are expensive but durable and have been known to cut fuel costs in half in certain situations.
There is one company coming out IV...PTO so the engine speed is no more than neccessary to run the PTO at desired RPM and it will also keep the desired ground speed.
Example... Round baleing hay. Desired PTO speed is 540. Desired tractor speed is 10 mph. Tractor is on level ground so engine runs 1200rpms to keep desired in check. Driver tractor pulls a hill engine RPM climbs to 1600, but PTO is 540 mph is 10. User needs to stop to dump a bale. Engine sees a lighter load after tractor stops, engine rpm decrease to idle, but PTO is still 540. The driver can then start moving again all with having to clutch the tractor. The same could be done with PTO applications on service style trucks.
This is all a box of chocolate IF the thing is built right, it could also be sour lemons if it is wrong. I would start this product in a small market and work my way up to the higher production numbers. Cough cough over seas.
I think this trans could be made to handle extremely high hp. If it is anything like the tractors they run a rediculously small shaft for the amount of power /torque running though it.
Have you ever rode in a IVT tractor of any kind? Deere, Fendt, Agco etc? They are expensive but durable and have been known to cut fuel costs in half in certain situations.
There is one company coming out IV...PTO so the engine speed is no more than neccessary to run the PTO at desired RPM and it will also keep the desired ground speed.
Example... Round baleing hay. Desired PTO speed is 540. Desired tractor speed is 10 mph. Tractor is on level ground so engine runs 1200rpms to keep desired in check. Driver tractor pulls a hill engine RPM climbs to 1600, but PTO is 540 mph is 10. User needs to stop to dump a bale. Engine sees a lighter load after tractor stops, engine rpm decrease to idle, but PTO is still 540. The driver can then start moving again all with having to clutch the tractor. The same could be done with PTO applications on service style trucks.
This is all a box of chocolate IF the thing is built right, it could also be sour lemons if it is wrong. I would start this product in a small market and work my way up to the higher production numbers. Cough cough over seas.
I think this trans could be made to handle extremely high hp. If it is anything like the tractors they run a rediculously small shaft for the amount of power /torque running though it.
Would be? Or COULD be? How do you know?
for all the 5% of duramax consumers who drag race and sled pull their trucks. Great.
I assume you havent towed heavy with an LBZ or LMM. Either will easily exceed a safe highway speed going up a hill at very heavy loads. We dont need anymore power.
The allison has a 4.49 reverse ratio. How much more slow speed precision do you need?
you're an idiot if you are backing/need to back up a 1 ton pickup truck faster than the current ~20mph max speed in reverse.
whens the last time you had to go directly from 20mph in forward to reverse in a truck. And why is a feature like this necessary in any automobile.
You have a good point, I didnt consider the fact that people could use their duramax's for bailing hay if GM were to spend a billion dollars to implement this new type of trans.
sorry, you still havent sold me on it.
ben
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i have enough emmission crap on my truck. why want more. if i was buying a new duramax as my first diesel and wanted new, then i guess. i would never trade up though. besides i got a McRat race tune
i still like seeing new ideas and technology progression though
i still like seeing new ideas and technology progression though