[DeTomaso] Stupid speedometer cable question

[JDeRyke at aol.com]

In a message dated 3/1/06 3:07:10 PM, oldwheel at mts.net writes:

<< Those that came with DS2 ZF were supposed to have speedos calibrated for 
1610 revs per mile and a drive gear with a 1:1 ratio to match that calibration. 
This was designed for the diameter of stock 15" wheels and tires and applies 
to Ford program cars. I don't know about the later cars. >>

Correct- as an addendum, I found that a 26-1/2" dia rear tire with the above 
speedo & adapter allowed us to "zero" Time & Distance Rallies laid out with 
precision aftermarket speedos to 0.10 mile accuracy. As for later-than '76 
Ford-era Panteras, a last-of-the-line Pantera 200, or SI, or other name...... seen 
at the factory in '96 had an electronic speedo drive screwed onto a 
stock-looking right-angle adapter at the stock-appearing ZF DS-2 with wires (but no 
cable) disappearing into the rear wire loom, and a stock-appearing electronic 
speedo in the dash, probably interfaced to the brainbox for the EFI Ford 302 
engine. I forget the diameter tires being run on its 17" rear wheels. FWIW- J DeRyke