[DeTomaso] optimum ZF ratios

[Asa Jay Laughton]

THAT is Cool!

I pulled up the photo of my ZF data plate here:
http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gallery&Itemid=57&g2_itemId=2158&g2_imageViewsIndex=1

Then compared the values on RBT's site.  Then I played with it a  
little  Right now I can expect to top out at about 130 MPH.  That  
means if I want to go faster (and who doesn't) I need to do some work,  
either increase top end RPM reliably, change tire size diameter or put  
a lower gear set in.

Fantastic.  I can see that link making it on the TPR site.  ;)

Asa Jay

Quoting boyd casey <boyd411 at gmail.com>:

> RBT has a gear ratio calculator on their web sight. It shows all the
> availible gear ratios for every gear as well as the final ring and pinion
> gear ratios. It shows the speed at shift points and the rpm drop per gear
> shift. Go to http://www.rbttrans.com/gear_ratios.html
>
> Boyd
>
>
> On Tue, Jan 12, 2010 at 2:24 PM, <jderyke at aol.com> wrote:
>
>> In a message dated 1/11/10 6:40:41 PM, dgordon100 at cox.net writes:
>>
>> > If buying a new ZF from RBT, what would be the optimal ratios for each
>> > gear and final drive given a max torque of approx 600+ ft/lbs at 4250 and
>> max
>> > horsepower of approximately 700 horsepower at 6500 rpm both measured at
>> > the wheels? I would thin(k) that after each gear change it would be
>> desirable
>> > to not drop below the peak torque rpm providing I shift at 6500 rpm.
>> >
>> If you're gonna gear it like you'll always be racing for money, the ZF will
>> likely hold together but production engines will get used up pretty fast.
>> My suggestion- phone or fax Lloyd Butfoy and ask the expert's opinion. He
>> has
>> many possible ZF combinations- including a 6-speed- but you need to discuss
>> them- and their costs. My 2¢- J DeRyke
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