JRH SCALE CARS
JRH SCALE CARS
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1935 Austin Seven Ruby Mk1  -  Specifications & Build History
Ruby Mk 1
Key Specifications
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Dimensions
Overall length: 10' 6½", overall width 4' 3".  Height: 5' 3"
Wheelbase: 6' 9", ground clearance: 6⅜".  Front track: 3' 4", rear: 3' 7"
Weight &
Capacities
Weight: 1334 lbs
Carrying capacity: 560 lbs (Four adults). 
External luggage rack capacity: 56 lbs
Copyright: J R Haddock 2013
Engine
Four cylinder, water cooled.
Bore 2.2", Stroke 3".  Cubic capacity 747cc.
Brake hp: 12 @ 2,600rpm.  Standing quarter mile: 31.4 secs
Starter
Electrical
Gearbox
4-speed & reverse, mechanical clutch. 
Synchromesh on 2, 3 & 4, ball change gear lever.
Springs
Half elliptical cross spring in front. Quarter ellipticals at rear.
Shock absorbers front & rear.
Brakes
Mechanical.  Hand and foot brakes work all 4 wheels. Central brake lever.
Wheels
Wire wheels. Tyres 4.00 x 17.  Spare wheel with tyre carried on back.
Petrol Tank
5 gall tank at rear, mechanical pump
Lighting
Dynamo.  Foot pedal for headlight dimming.
Austin Seven & Ruby Mk 1
Production History
Other
Electric horn, speedometer.  Semaphore type direction indicators.
Automatic windscreen wipers.  Driving mirror.
  • Austin Seven launched July 1921
  • Production: July 1922 to Mar 1939
  • Total production ~ 291,000
  • Ruby Mk1 manufactured: July 1934 to July 1936
  • Production in 1935: 27,000
  • Total Ruby production (all versions): ~90,000
Sources :  The Austin Seven Source Book; Bryan Purves
              :  Austin Seven Companion; The 750 Motor Club
              :  Original Austin Seven; Rinsey Mills
              :  Austin Seven Handbook #1182 (Aug '34)
                 (courtesy of The Austin Seven Clubs Association)