10-02-2019, 07:40 PM
(27-01-2019, 05:48 AM)Bob Culver Wrote:[quote pid='22821' dateline='1548564489']
For myself and others not familiar with the Seven history, to save us slogging through all previous posts, can a brief summary of the original car or a reference to info if on the Forum be provided please?
What do the cowls cover? Is the car arranged with parallel rear springs?
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Hello Bob,
Please excuse my very slow response to your request.
The car was built in late 1924 into early 1925, debuting to the press in April 25. The design intent was to build the first 100mph sub 1ltr car. The body shape is intended to be streamlined and the fairings are to do just that.
The car does have parellel rear springs, which are covered by some of the fairings. The driver sits down behind the rear cross member with feet straddling the steering, the large bullet covering the right hand side of his body.
From the outset it was a supercharged car, the first Seven to be encouraged in this way, using an 3 lobe Roots design built in house by Austin. Beatrice (Canning Brown) believed that the name Slippery Anne originated with Arthur Waite, but, it was not painted onto the car until it was privately owned by John Pares.
It did not achieve the magical 100 mph, which in my own humble opinion is due to the lack of any air flow management inside the car, it was simply open nose to tail without fire wall or baffles.
The chassis is considerably altered and gives a wheelbase which is the best part of a foot longer than a standard Chummy. Almost all the mass is within this wheel base and, unlike later Austin racers such as the Ulster, it has a very low G of G.
I hope this gives you a good picture of the car, but, probably far more use in understanding the configuration are some real pictures, the first at Madresfield in 1925:
An overview of my chassis whist working out the seats
A clear perspective of the rear spring arrangment
This picture shows how the drivers seat is positioned partially within the wooden frame with the right side sitting within the side fairing. Entry is via the passenger seat sliding across under the wheel, it is cosy but comfortable.
I hope this covers it, if you need more details, then please do say.
Kind regards, Mark.