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Werks part number for Twinmaster
Ed and David:
It is nice to know that you enjoyed some of the memories shared in the prior post regarding those wonderful mirrors manufactured by Talbot & Co. W. Berlin.
The Talbot 300 series represents one of the greatest automotive accessories from the golden era of sports cars, the very same years spanned by the production of the longhood 911.
Of course, in declaring admiration for the Talbot products we are not alone. The Porsche Werks validated the perfection of the Model 300 by assigning it a factory part number.
A factory part number assigned by the Werks was perhaps the greatest compliment paid to a manufacturer of an after-market product.
But, Talbot was not alone in gaining this distinction. Another manufacturer, also at the pinnacle of its market niche, enjoyed that very same supreme compliment, the impramatur of a Werks parts number.
Many special clients of the Race Department preferred to contest the dramatic venues afforded by the European Rallye season rather than on the Circuit venues. Still others competed in both types of events and a few of the surviving factory built ST show evidence of having factory modifications for both types of competition.
Piech considered the 911 to be "show-cased" most properly in Rallye venues, where his uncle's cars demonstrated speed and reliability under admittedly highly demanding conditions but still in an environment familiar and similar to those encountered by prospective customers for the company's road cars. As a result, the number of 911 ST built to Rallye specifications handily out numbers those re-constructed by the Race Department to Circuit specs.
The Competition Spare parts manual lists numerous items for the specialized needs of the Rallyist. For Rallye use, the ST had to provide a competitive platform and meet the needs of not only the competition Driver, but also the Co-driver. Installation of competition RePa harnesses for both occupants of the cockpit provides an example to illustrate this point.
We often refer to the Co-driver as the Navigator, whose responsibilities include keeping precise track of distance and time in order to achieve a good result for the team.
While the speedometer of the 911 includes a reasonably accurate trip odometer, located in full view of the Driver, it was essentially useless under the conditions of an Alpine rally or the demands of mountain stages taken at full throttle at such venues as the Tour de France or Tour de Corse.
Under these circumstances, it was the Co-driver who needed to signal proper route instructions, all indicated by the precise distance travelled, in order to avoid embarrassing and potentially disastrous results for the team.
For these specialized requirements, the Co-driver required precision instruments.
Haldex AB in Halmstad, Sweden manufactured just such an instrument. The Twinmaster, a twin set of odometers that could be adjusted to highly accurate measurements, and which had provision for mounting on the dash on the Co-driver's side of the passenger compartment, gained wide acclaim among rallyists as the best instrument of its kind.
The Race Department agreed with this assessment, as witnessed by the presence of the Halda Twinmaster in the cockpits of so many ST prepared to Rallye specifications.
And yes, the Race Department paid the ulitmate compliment to Haldex AB, as the Twinmaster holds pride of place in the Electrical Equipment section of the Competition Spares List for Type 911S, Competition Type:
911.641.908.00 Twinmaster
Just one simple word, Twinmaster, was perfectly adequate. It required no translation into the German, French, English or Spanish used for all the other entries in the Spares List. Everyone knew exactly it meant: a precision instrument used by every team on the Rallye scene.
One finds the related speedometer drive, bevel drive and "drive shafts" all listed along with the "factory equipment" Twinmaster.
Rallyists referred to the Twinmaster colloquially as a taxi meter. As it turns out, this sobriquet was not far from the truth, as Haldex AB developed the highly specialized Twinmaster product for the tiny niche market of international rallyists as a simple product extension of its real business manufacturing meters for the vast fleets of taxi cabs in the cities all across Europe.
Images attached to the post show the relevant page from the Competition Spares list, the installation of the Twinmaster as devised by the Race Department for a Rallye prepped ST for Zasada and another such installation in a Safari ST.
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Mid Cal Sports Cars Ltd. - Rally Equipment
Back in 2007 my wife and I celebrated our 25th Anniversary. As a present to ourselves we decided to participate in a week-long Rallye organized by Jean and Rich Taylor of Vintage Rallies: the Mountain Mille. We had a great time and enjoyed criss-crossing the Blue Ridge in Virginia and West Virginia.
The Hot Rod was supposed to be finished for that event...but luckily we had another car to take along for the celebration (this is a good excuse to proffer when you want to buy another car).
An enthusiastic entrant, Katie enjoyed the din of a stripped interior combined with barely muffled exhaust and worked well with an Atomic stop watch and the recalibrated speedometer whose readings I sang out to her.
We thought it would be fun to incorporate some of the factory rally equipment on the Hot Rod with a view towards participating in some future events.
A nice gent in Bakersfield, California sold us his ally cased model TWM 1 Halda Twinmaster. He bought it new and used it for many years for SCCA sanctioned rallies and competed up and down the West Coast of the U.S.A. and Canada.
It came in its old home-made plywood fitted case. Drive bevels to attach to the speedometer, extra gears to optimize the accuracy of the instrument, the flexible drive shafts and related clips were included with the Twin, which fits snugly into its section of the case.
We intend to put the property of Mid Cal Sports Cars Ltd. to good use in the Hot Rod.