No Sweat
Back in 1989, the Formula One field contained eight graduates from the previous season's European Formula 3000 Championship. This year, at the time of writing, there are only two. One,…
A REVOLUTION IN SILENCER DESIGN/
THE BURGESS STRAIGHT THROUGH SILENCER APPLIES ENTIRELY NEW PRINCIPLES TO THE SILENCING OF AUTOMOBILE EXHAUSTS . . .
HITHERTO ENGINEERS HAVE CONCENTRATED on muffling exhaust noise by the restriction of out-flowing gases. This restriction sets up back-pressure.
THE POWER LOSS FROM BACK-PRESSURE in some exhaust systems after a short period of use is very high. Over-heating, poor acceleration and HEAVY PETROL CONSUMPTION result.
The BURGESS STRAIGHT THROUGH system reduces the intensity of sound waves by absorption. The illustration above clearly shows the straight-through central perforated pipe, free of baffle-plates or other restrictive elements, but surrounded by a heat resisting acoustic filling which permits the expansion of gas and absorbs the sound waves.
The BURGESS SILENCING SYSTEM as fitted to the ALVIS range combines freedom from back-pressure with efficient silencing. A DESCRIPTIVE LEAFLET giving full particulars of this interesting invention may be had from any good service garage, or post free from : (Patent No. 312937) British Manufacture DEPARTMENT S3 BURGESS PRODUCTS CO., Bush House, London, VV.C.2