development of the ducktail

[gms]

Does anyone have a real ducktail they could post pix?
I would like to see the underside in detail

[real550A]

Here's a few shots of one of mine. These are of a '74 w/no license lights.

[karlusmagnus]

ducktail from a 73 RSR

[Jim Garfield]

Does anyone have a real ducktail they could post pix?
I would like to see the underside in detail

This is an RS.

[Chuck Miller]

Here's another.......

[gulf908]

Gents,
A further note from the archives.
Attatched is a part of the Motor Sport report on the Austrian 1000 km race from Denis Jenkinson in the August '72 edition.
The main results were a 1 to 4 for Ferrari and a Pantera winning Gr.4 from Fitz in the Kremer 2.5.
The 'RS' was placed 10th and was described by Motor Sport in the results as - Porsche 911 Special - 2.7 litre - entrant P.Strahle KG.
I bet engineer Steckkonig and rally contractee Waldegaard were told to make it to the finish in one piece.
No ducktail pics though,Hugh.

Cheers,
Dennis.

[911T1971]

check this:

[911T1971]

Here RS (No. 010 ? cant remember) photo taken around the same time in may/june 72.
Note flares as well as S-aluminum trim in S-style.
This car was discussed on another thread.

[HughH]

Raj

That photo you posted of RS12 was not from the RS book. It was from one of Brian Long's books - (not sure which one but page 69).

To answer your second lot of questions first, I don't think that the two cars shown in the black and white photos on post #16 are RS's or RS prototypes at all. I think that they were a part of the 911S 2.7 programme BUT were more likely 2.4's with badges changed and slight alterations to the body. I am fairly sure the advertising (including these pictures) was done BEFORE the RS programme was officially commenced. The RS book claims that the advertising had been completed and the dealers advised before the end of Spring 1972. Lets say that is mid May.

The 911S 2.7 was supposed to be the same as the 2.4 except the larger engine, wider tyres and rear guards.

The decision to go for the RS option and ditch the 911S2.7 did not occur until at least mid June, and was partly driven by concerns about homologating a lightweight version of the 911S2.7.

Looking at the photos, while the wheel arches may have had an extra amount of flaring around the lips, I don't think they are RS guards. They dont look like the ones on RS12. Given the lead time on advertising etc I suspect the photo shoot may have been very early 1972, before even the first prototype RS was built in April.

According to the RS book, the build dates on RS 11 to 18 were:
RS11 and 12 April 1972
RS13 and 14 May 1972
RS15, RS 16 and 17 July 1972
RS18 August 1972.
We also know that the Strahle ST was converted to a RS / RSR on 25 August 1972 (from ST list)

Various sources state that it was September before the German federal licencing approvals were obtained for RS and even then only a general one WITHOUT the spoiler in Germany - and to get them licensed with the ducktail in Germany each car had to go separately to the TUV in Stuttgart for an individual licence to be on the road legally with the ducktail.

At least RS 11,12 and 13 were delivered without ducktails and 12 and 13 still exist without them and both are on 72 shells with oil doors.

I have no data on RS14, but 15 was the (blue and white) sport version used in photos and the homologation papers obviously with a ducktail, 16 was the paris show car, obviously with a ducktail and 17, according to a letter from Porsche in 1990, was the very first M472 (touring package ) car although the RS book shows 12, 13 and 14 all with M472 conversions. RS 17 was also shown as delivered to the sales department while all others are simply shown as factory owned. RS 17 was the white and red car used in the sales brochures.

I have no details on RS 18 although it is shown as a company owned M472.

I have no doubt that the RSR programme was going on well before the TdC car got converted. I would argue that it started in about 1969 /1970 with the 2.3ST and evolved from there. Aren't the 1972 ST front and rear guards almost identical to 1973RSR ones? I think the Strahle car was a step along that road, in particular with the 2.7 / 2.8 engine and the aero package, but it was not close to the beginning.

The RS programme allowed the weight to come down, the rear wheels to be wider, the engine capacity to go to 2999cc, gearbox enhancements, suspension enhancements, the aero package to come in etc,

On the 2.7 targa. As I said above I doubt it the picture was a real one - or at least one that ever escaped the factory. However other threads on this board have told about at least one "RS Targa" as a special order from the factory - but I dont think ever really counted as a RS.

[HughH]

Hi raj

i will look at this when i get home tonight
but on the
" i know of no regular S that had a separate transmission oil pump specd.The peformance figure is identical to the RS and the 80 litre tank is interesting.Kotflugelvrebreiterung-translates fenderwidening.Reservefaltrad-collapsable spare tire. "

these were all included, as I understand it, in the spec of the "new" 911S2.7 project that did not go ahead. I understood that the 915 box with cooler was a part of it and the engine had the same BHP spec as the eventual RS one suggesting that it was (near enough) unchanged from the proposed 911S2.7 one.

looking from that point of view the RS was a mutation of the 911S2.7 project that had already been underway for some time and was almost ready for launch - which explains why it was completed so quickly after the decision to drop the 911S2.7 project and replace it was the RS project in June 1972.

the "new" bits about the RS project were the lightweight homologation version , the ducktail and things like that.
Indeed it would be interesting to categorise the differences - maybe Brian F knows?