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Old May 21st, 2013, 06:04 PM   #1
cerial
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Default Zf 9hp

Could the ZF 9HP be the next wave in off road transmissions?






The 2 speeds are fun in a straight line. But for practical cruising and lack of much low end they left me selling the car off quickly.

The 3 speeds were stupid tough and streamlined through leaps and bounds through the 60-70's. Making it my favorite automatic over the years. Cost and per foot pound the 3 speed was the king of the hill until the late 90's. I still prefer the low cost, simplicity, ease of use, and availability of a 3 speed.

The 4 speeds introduced overdrive and a tighter gear spread. Along with improved electronic lockup. But, I could not see a huge improvement.

The electronic 5 speeds were a improvement with better gearing and heavier duty applications introduced. The aftermarket built them further quickly ruling out the issues that left them with a nice run that still continues.

The 6 speeds were very nice with a great low range coupled with a great high while being more evenly spaced out. But, they had costly issues that I could not justify on top of being long and in most cases heavy. The ones that were built for heavy abuse were often very expensive.

The ZF 8HP I am very impressed with. Despite all the electronics which I feel will be it's largest vice in the upcoming years. Recalls and such a large employment will weed out most of those issues. Still the large size of such a unit will make placing it in any compact short wheelbase "crawler" or core will be difficult at best.

Then the clouds open up and we now have the 9HP. This ultra light, very compact, very strong planetary based unit could change the layout of buggies in upcoming years. Using mostly stock light weight engines this new transmission can allow for gearing and power/weight numbers unheard of. Once spooled/coupled with a 271 or planetary based transfer case through the use of the next generation electronically controlled torque converter this could produce big block power at a fraction of the weight.
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Old May 21st, 2013, 06:15 PM   #2
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Troglodytes will only trust a th400 or 700r4.

I'll stick to a manual.

For daily driving hell ya id take an 8 speed!
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Old May 21st, 2013, 06:18 PM   #3
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I am holding out for the HP11.
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Old May 21st, 2013, 06:31 PM   #4
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My bicycle has 21 speeds.
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Old May 21st, 2013, 06:40 PM   #5
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I have two speeds slow and sleep!
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Old May 22nd, 2013, 01:27 PM   #6
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My bicycle has 21 speeds.
I can ride a bike with no handlebars
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Old May 22nd, 2013, 02:45 PM   #7
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Quote:
Originally Posted by cerial View Post
Could the ZF 9HP be the next wave in off road transmissions?






The 2 speeds are fun in a straight line. But for practical cruising and lack of much low end they left me selling the car off quickly.

The 3 speeds were stupid tough and streamlined through leaps and bounds through the 60-70's. Making it my favorite automatic over the years. Cost and per foot pound the 3 speed was the king of the hill until the late 90's. I still prefer the low cost, simplicity, ease of use, and availability of a 3 speed.

The 4 speeds introduced overdrive and a tighter gear spread. Along with improved electronic lockup. But, I could not see a huge improvement.

The electronic 5 speeds were a improvement with better gearing and heavier duty applications introduced. The aftermarket built them further quickly ruling out the issues that left them with a nice run that still continues.

The 6 speeds were very nice with a great low range coupled with a great high while being more evenly spaced out. But, they had costly issues that I could not justify on top of being long and in most cases heavy. The ones that were built for heavy abuse were often very expensive.

The ZF 8HP I am very impressed with. Despite all the electronics which I feel will be it's largest vice in the upcoming years. Recalls and such a large employment will weed out most of those issues. Still the large size of such a unit will make placing it in any compact short wheelbase "crawler" or core will be difficult at best.

Then the clouds open up and we now have the 9HP. This ultra light, very compact, very strong planetary based unit could change the layout of buggies in upcoming years. Using mostly stock light weight engines this new transmission can allow for gearing and power/weight numbers unheard of. Once spooled/coupled with a 271 or planetary based transfer case through the use of the next generation electronically controlled torque converter this could produce big block power at a fraction of the weight.
Not really, just because in the real world, you don't want to be running a small engine at stratospheric levels. For certain areas, it works, but others, it doesn't.

Stock lightweight engines don't make 'big block' power. You might be able to get high whel torque at low wheel speed, but not power. Power output is independant of torque converters and gearing.

Its a 200lb front wheel drive transaxle, that handles about 350 ft-lbs of torque. Don't see it catching on....
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Old May 22nd, 2013, 02:46 PM   #8
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I can ride a bike with no handlebars
Well I can split the atom of a molecule. OF a molecule
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Old May 22nd, 2013, 03:59 PM   #9
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Originally Posted by Haggar View Post
Not really, just because in the real world, you don't want to be running a small engine at stratospheric levels. For certain areas, it works, but others, it doesn't.

Stock lightweight engines don't make 'big block' power. You might be able to get high whel torque at low wheel speed, but not power. Power output is independant of torque converters and gearing.

Its a 200lb front wheel drive transaxle, that handles about 350 ft-lbs of torque. Don't see it catching on....
I am suprised for one that Cerial of all people thinks that this is some magic trans that will make energy from nothing.
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Old May 22nd, 2013, 06:00 PM   #10
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