Comparison CTV TO HST COMPARISON

[Sweden-Art]

You won't find applications that are harder on transmissions than a dozer, yet they seem to do just fine with HST at the Deere factory...

Cant agree with your statement. In my world pushing dirt in one direction in low speed is not as close as hard on the transmission as changing direction with a wheel loader going from reverse to forward with a bucket full of dirt continuously. Doing this all of the motion energy pass trough the converter and direction clutch disks.(Assuming the transmission is a regular hydraulic transmission with TC)
Or driving into the pile with max power/torque, then complete stop on movement but the gears is still synced (stall). This means a lot of torque and power that the TC/clutches/transmission need to hold.
I cant see this type of beating with a dozer.

Just my opinion. Maybe there is any heavy equipment operators here to tell what they think.

 

[ModMech]

Link to Fendt info: www.farmdepot.biz/CVT-Fact-Vs-Myth.pdf

Kim

I read all 9 pages and the FENDT technology is not the ONLY "CVT" system used in Ag. Furthermore, there are differences in CVT just like there are in HST and gear, both between manufacturers and transmission models. Saying one trans model is "THE" solution is just silly.

One thing that caught my eye and was disturbing was:
"A PROVEN TRANSMISSION.
This transmission, built and pioneered by Fendt, has been part of the tractor industry since 1996. The average life of the CVT is 9000hrs" (Pg 6).

There is NO WAY a farmer is going to accept a 6-9 year service life of a $20,000 component.

Additionally, their claim of fuel savings is largely related to greater acres per hour and not lower actual fuel consumption due to the CVT.

I also don't buy their "not just a glorified HST" claim, if you look at their system, it IS a modified HST.

There are multiple ways to achieve CVT, no Ag manufacturer that I have seen is using what I consider to be a "true" CVT system - where there is NO SLIP between input and output. They just don't hold up under severe use.....
yet.

My dealer told me today that a hydro trans is old technology and will eventually be phased out. That's why you can't get a hydro with a cab in the 40-50 hp Case/New Holland line.

Hydro is "old" but not nearly as old as gears and they will not be eliminating them any time soon, so I'm sure HST is safe as well.

 

[Sumpter]

I read all 9 pages and the FENDT technology is not the ONLY "CVT" system used in Ag. Furthermore, there are differences in CVT just like there are in HST and gear, both between manufacturers and transmission models. Saying one trans model is "THE" solution is just silly.

One thing that caught my eye and was disturbing was:
"A PROVEN TRANSMISSION.
This transmission, built and pioneered by Fendt, has been part of the tractor industry since 1996. The average life of the CVT is 9000hrs" (Pg 6).

There is NO WAY a farmer is going to accept a 6-9 year service life of a $20,000 component.

Additionally, their claim of fuel savings is largely related to greater acres per hour and not lower actual fuel consumption due to the CVT. I have a feeling that like me, biron isn't going to be farming with this tractor. If we ever get that many hours in our life I would be suprised.

I also don't buy their "not just a glorified HST" claim, if you look at their system, it IS a modified HST.

There are multiple ways to achieve CVT, no Ag manufacturer that I have seen is using what I consider to be a "true" CVT system - where there is NO SLIP between input and output. They just don't hold up under severe use.....
yet.


Hydro is "old" but not nearly as old as gears and they will not be eliminating them any time soon, so I'm sure HST is safe as well.

I like Byron probably are not using this tractor for farming and would be lucky to get that many hours in our life. I do have this tractor and I am very happy with it. CVT and all.

 

[Reg]

I just got a quote on a Boomer 3040 tractor with a factory CAB and was told the cab model only comes with the CTV transmission. Being new to this I would like to know how the two transmissions differ in operation and what are the Pros and Cons. I have an HST transmission on my Cub Cadet but have never owned something with a Constant Velocity Transmission.

Thanks in advance!

I know NOTHING about Cable TeleVision transmissions, or I would help you.

Continuously Variable Transmissions... those a a different thing entirely.
Constant Velocity Transmissions... another alternative.

 

[Sumpter]

potato....potatoe?!?!?

 

[KWentling]

I read all 9 pages and the FENDT technology is not the ONLY "CVT" system used in Ag. Furthermore, there are differences in CVT just like there are in HST and gear, both between manufacturers and transmission models. Saying one trans model is "THE" solution is just silly.

One thing that caught my eye and was disturbing was:
"A PROVEN TRANSMISSION.
This transmission, built and pioneered by Fendt, has been part of the tractor industry since 1996. The average life of the CVT is 9000hrs" (Pg 6).

There is NO WAY a farmer is going to accept a 6-9 year service life of a $20,000 component.

Additionally, their claim of fuel savings is largely related to greater acres per hour and not lower actual fuel consumption due to the CVT.

I also don't buy their "not just a glorified HST" claim, if you look at their system, it IS a modified HST.

There are multiple ways to achieve CVT, no Ag manufacturer that I have seen is using what I consider to be a "true" CVT system - where there is NO SLIP between input and output. They just don't hold up under severe use.....
yet.


Hydro is "old" but not nearly as old as gears and they will not be eliminating them any time soon, so I'm sure HST is safe as well.

Did I say or imply that Fendt was the only CVT transmission? Obviously there are others. I supplied that link as an example. Later there was a post with a link to a NH transmission that is much like a snowmobile set up. I was unaware and surprised that that was used in a tractor. I think 9000 hours life is ballpark with most powershifts. Some get more, some less. I've heard of powershift transmission overhauls running $20,000+. As far as efficiently putting power to the ground, nothing is going to be better that an old standard gear transmission. I'm sure the fuel efficiency claims come from being able to run the ideal ground speed and engine RPM for the job at hand, not to mention the convenience and timesaving of not having to shift up or down as conditions change. CVT is becoming more popular all the time.

Sorry Fendt.s transmission technology doesn't meet your approval.

Kim

 

[Sumpter]

Sorry qouted the wrong one. Reg seemed to be making fun of Byron saying CTV instead of CVT. No disrespect intended or otherwise.

 

[bironacad]

I know NOTHING about Cable TeleVision transmissions, or I would help you.

Continuously Variable Transmissions... those a a different thing entirely.
Constant Velocity Transmissions... another alternative.

CTV not CVT was my doing as I started the post and was really not familiar with any of the acronyms, however Reg, you were the first one picky enough to mention it, lol.

Let us remember that we are fortunate to have tractors some don't have a snow shovel, go figure.

 

[jk96]

Anyone with the NH CVT have a comparison on the noise level inside the cab compared to the hydro?

I've got a DX45 hydro (TC45 in red) and love the tractor. My only complaint is the noise level of the hydro whine. The radio is almost worthless due to the hydro whine. If I turn it up loud enough to hear it then I've got a headache after an hour of seat time.

Also - on the CVT - what is the reverse speed like. I do a lot of snow removal and a faster reverse speed would be helpfull. I push several storage units my family owns so you have to push it all out with the buildings on each side. Lot's of forward and reverse to push everything out.

 

[farmall40]

Anyone with the NH CVT have a comparison on the noise level inside the cab compared to the hydro?

I've got a DX45 hydro (TC45 in red) and love the tractor. My only complaint is the noise level of the hydro whine. The radio is almost worthless due to the hydro whine. If I turn it up loud enough to hear it then I've got a headache after an hour of seat time.

Also - on the CVT - what is the reverse speed like. I do a lot of snow removal and a faster reverse speed would be helpfull. I push several storage units my family owns so you have to push it all out with the buildings on each side. Lot's of forward and reverse to push everything out.

Goes as fast in reverse as forward. My CVT goes 20.5 mph.