Early Racing Austin Sevens

[Tony Griffiths]

Restored, high-resolution extracts from an August 1923 edition of "The Light Car" magazine concerning the early racing Austin Sevens.
Ian Williams added:  These are the three team cars that were re-built for the 1924 season with the prototype Brooklands body bodies fitted which I referred to in Tony's previous post. One of them became Waites 1925 blown singer seater and eventually Slippery Ann, another number 47 from the JCC 200 was sent to NZ in 1925. The third I am not certain but may have been reabsorbed into the works for spare parts.

[Robin Boyce]

The engine has a remarkable assortment of sparking plugs and cylinder head primers, from sketch to sketch...

[Tony Press]

Number 4 didn't get a primer   not to mention the interesting oil feed at the front and the strange strutting on the Cox Atmos manifolds which the coloured picture seems to have fudged  

[Amilcar John]

Can anyone educate me on the different types of A7 starting handle? I thought the ones for the mag engine did not have the cotter pin holding the crank to the shaft:

A7C handle

....but the picture above (of the Boulogne car front) seems to show otherwise.

[Belinni]

Very nice!

[stuartu]

Amilcar John, you are correct about magneto starting handles - unless the big ends are pressure fed, which was the case with these cars. This demanded a different nosepiece and starting handle design.

Regards,

Stuart

[Amilcar John]

Thanks so much. I didn’t realise they were pressure fed. A puzzle solved! John

[Tony Press]

Amilcar John, you are correct about magneto starting handles - unless the big ends are pressure fed, which was the case with these cars. This demanded a different nosepiece and starting handle design.

Regards,

Stuart

Interesting - the story notes the engine is little different from standard 

There doesn't seem to be any later mention of this major change either 

Is the oil feed at the front of the engine part of the pressure fed system ?

[Andy Bennett]

Interesting - the story notes the engine is little different from standard  


Perhaps that was a bit of marketing, suggesting that your standard purchase for the road would have an engine just like this...

[Amilcar John]

According to Martin Eyre's book, they had a pressure fed 1"1/8 crank