[DeTomaso] Stock transmission speedo output

Asa Jay Laughton asajay at asajay.com
Mon Apr 8 09:38:38 EDT 2013


Aha!  I got it now.
2 ÷ 4.22

2 divided by 4.22

Asa

Asa Jay Laughton, MSgt, USAFR, Retired
&  Shelley Marie
Spokane, WA
******************************
http://www.racingagainstautism.com
http://www.teampanteraracing.com
http://facebook.com/racingagainstautism


On 4/7/2013 11:36 PM, Tomas Gunnarsson wrote:
> No, you have to divide the 2 by the final gearing. Speedo does one turn,
> halfshafts do 1/2.11 (~0.47) turn. The speedo ratio indicated is
> relative to the output shaft of the gearbox, not the output shafts to
> the wheels. Sorry for the confusion.
>
> Tomas
>
> <-----Ursprungligt Meddelande----->
> From: Asa Jay Laughton [asajay at asajay.com]
> Sent: 8/4/2013 2:21:36 AM
> To: detomaso at poca.com
> Subject: Re: [DeTomaso] Stock transmission speedo output
>
> Here is a photo of the ID plate on my ZF:
> http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gall
> ery&Itemid=57&g2_itemId=2158&g2_imageViewsIndex=1
> <http://www.teampanteraracing.com/index.php?option=com_g2bridge&view=gal
> lery&Itemid=57&g2_itemId=2158&g2_imageViewsIndex=1>
>
> If I understand Thomas correctly, the speedo output goes full circle
> -once- at the point the output shaft (half-shaft going to wheels) goes
> around twice.
>
> Put more simply:
> Speedo shaft 1 turn = Half-shaft 2 turns
>
> Does that sound correct?
> Asa
>
> Asa Jay Laughton, MSgt, USAFR, Retired
> &  Shelley Marie
> Spokane, WA
> ******************************
> http://www.racingagainstautism.com<http://www.racingagainstautism.com/>
> http://www.teampanteraracing.com<http://www.teampanteraracing.com/>
> http://facebook.com/racingagainstautism
>
>
> On 4/7/2013 3:12 PM, Tomas Gunnarsson wrote:
>> I hope I get this right now but the tacho drive gearing is indicated
> on
>> the ID plate. It should be 2.0. If I'm right that means that the
> output
>> shaft of the gearbox turns 2 turns per tacho output turn. So for one
>> tacho out the rear wheels make 2/4.22 turns.
>>
>> Tomas
>>
>> <-----Ursprungligt Meddelande----->
>> From: Asa Jay Laughton [asajay at asajay.com]
>> Sent: 7/4/2013 9:28:46 PM
>> To: detomaso at poca.com
>> Subject: [DeTomaso] Stock transmission speedo output
>>
>> All,
>> Assuming a stock 1973 ZF-2 and stock angle drive speedo adapter, what
> is
>> the ratio of the speedo output to the axle output on a Pantera?
>>
>> i.e. the rear wheel goes around once and the speedo output goes around
>> <how many times>
>>
>>
>> Where can I find that information?
>> Asa
>>
>> Asa Jay Laughton, MSgt, USAFR, Retired
>> &  Shelley Marie
>> Spokane, WA
>> ******************************
>>
> http://www.racingagainstautism.com<http://www.racingagainstautism.com/>
> <http://www.racingagainstautism.com%3chttp//www.racingagainstautism.com/
> %3E>
>> http://www.teampanteraracing.com<http://www.teampanteraracing.com/>
> <http://www.teampanteraracing.com%3chttp//www.teampanteraracing.com/%3E>
>>
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