# Razor Blade

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The [Aston Martin](/source/Aston_Martin) **Razor Blade** team car was built in 1923 to break the one-hour light car record of 101.39 mph (163.17 km/h) held by [AC Cars](/source/AC_Cars). Although it failed to break the record, it did have success in race and record attempts in the 1920s.

The August 1923 issue of [The Light Car & Cyclecar](/source/The_Light_Car_%26_Cyclecar) magazine stated:

The latest Aston Martin racer… represents the greatest advance in high efficiency small car design.

## History

Standard Aston Martin parts were used on a specially built narrow chassis with quarter elliptic springs at the rear. Chassis number 1915, registration number XO 9958. The engine had previously been developed for the 1922 [French Grand Prix](/source/French_Grand_Prix) by Aston Martin. It was based on half a 1921 three-litre eight-cylinder [Ballot](/source/Ballot_(automobile)) engine giving a four-cylinder configuration, with twin overhead [camshafts](/source/Camshafts), 16 [valves](/source/Valves), and 1.5 litres capacity. It produced 55 hp (41 kW) at 4,200 rpm.

The body was built by the [de Havilland Aircraft Company](/source/De_Havilland_Aircraft_Company) and is 18 1⁄2 inches (47 cm) at its widest point. It is said to be the narrowest [racing car](/source/Racing_car) ever built. The original design was for the body to be fully enclosed, but [Lionel Martin](/source/Lionel_Martin) was unable to find a driver small enough to fit in it. Originally code-named the *Oyster*, the car was soon called the Razor Blade.[1]

The car was driven by [S. C. H. Davis](/source/S._C._H._Davis) for the attempt at the one-hour [light car](/source/Light_car) record. The car lapped consistently at the [Brooklands](/source/Brooklands) circuit at 103–104 mph but the front offside tyre came off and after having a new tyre fitted, the same wheel shed its tyre several more times at speeds higher than 100 mph (160 km/h), until the record attempt was abandoned.[2]

The Razor Blade was raced regularly during the 1950s and was sold to the Harrah Motor Museum in the US, that subsequently became the [National Automobile Museum](/source/National_Automobile_Museum). It was returned to the UK in the 1980s,[3] restored by the present owner and it is now in use in [VSCC](/source/VSCC) and other historic car events.

*The Light Car and Cyclecar* magazine, 7 September 1923, printed the following verse under the title of LIGHT CAR-ICATURES after the Razor Blade came first in the BARC meeting at Brooklands:

Major F. B. Halford (The intrepid driver of the "razor blade" Aston-Martin racer) With razor blades we’re all acquainted; Some are good, others painted. Halford Smiles; he’s found a winner; Diet follows – make him thinner.

## Racing history 1923 to 1935

Year Race Result 1923 B.A.R.C. August Meeting Brooklands (Halford) 1st, 5th on handicap Southsea Speed Trials (Eyston) 2nd in class Record Attempt Brooklands (Halford) S.S. km. 66.54 mph Record Attempt Brooklands (Moir) S.S. Mile 74.12 mph 1924 M.A.C. Shelsley Walsh (Hall) 3rd in class Hants A.C. Hill Climb Spread Eagle (Cook), open events, 1600 c.c. and under 2nd on formula Hants A.C. Hill Climb Spread Eagle (Cook), open events, 3600 c.c. and under 2nd on formula 1925 Essex M.C. 100 Mile, Brooklands (Douglas) 2nd on handicap B.A.R.C. Whitsun Meeting Brooklands (Douglas) 1st overall B.A.R.C. August Meeting Brooklands (Douglas) 2nd overall 1932 Brighton Speed Trials (Milner) 1933 Brighton Speed Trials (Wilmot) 1935 V.S.C.C. Howard Park Speed Trials (Wintour) B.O.C. Lewes Speed trials (Wintour) Novice Award

## References

1. Hunter, Inman. "Razor Blade". *AM Magazine Vol 1, No. 2*

1. Coram, Dudley (1957). *Aston Martin Story of a Sports Car*. Motor Racing Publications. ASIN B0000CJXFM.

1. Demaus, A.B. (April 1986). "Razorblade". *The Automobile*

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Adapted from the Wikipedia article [Razor Blade](https://en.wikipedia.org/wiki/Razor_Blade) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Razor_Blade?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.