Rapier Specifications.

Performance tests were carried out by 'Motor' (Jan 1968) at the Motor Industry Research Association proving ground, Lindley.

Maximum Speeds

Mean-lap (banked circuit)..........................98.7
Best one-way 1/4_mile..............................102.2
Direct Top gear....................................93.0
O/d 3rd gear.......................................90.0
3rd gear...........................................72.0
2nd gear...........................................47.0
1st gear...........................................30.0

Acceleration times

0-30................................................3.8
0-40................................................6.0
0-50................................................8.6
0-60................................................12.0
0-70................................................16.2
0-80................................................23.7
0-90................................................31.4
Standing 1/4 mile...................................18.5



         O/d
         Top             Top               3rd
MPH      sec             sec               sec
10-30    ---             ---               7.6
20-40    14.3            9.8               6.8
30-50    13.8            9.2               6.9
40-60    13.6            9.0               7.0
50-70    16.0           10.5               7.9
60-80    18.4           13.0               ---
70-90    22.2           15.3               ---

Fuel Consumption

Touring.............................................29.7 mpg
Overall.............................................25.1 mpg
       .............................................11.25 L/100km
Tank Capacity.......................................16 Gallons

Weight

Kerb_Weight (unladen)................................20.0 c.w.t
Front/Rear Distribution..............................55/45%
Weight laden (as tested).............................23.7 c.w.t

Dimensions

Width.................................................5'-5 1/2"
Unladen Height........................................4'-6 1/2"
Length................................................14'-6 3/4"
Ground clearance (under engine).......................7"

Engine

Cylinders.........................................4
Bore and Stroke...................................81.5mm x 82.5mm
Cubic Capacity....................................1,725.c.c
Valves............................................O.H.V.pushrod
Compression Ratio.................................9.2:1
Carburetters......................................2 Zenith Stromberg 150 CDS
Fuel Pump.........................................A C Mechanical
Oil Filter........................................Full Flow
Maximum Power (net)...............................88.B.H.P at 5200 rpm
Maximum Torque (net)..............................100lb.ft at 4000 rpm

Transmission

Clutch..............................Borg and Beck- 7 1/2 inch diaphragm spring
Top gear ratio......................1.0:1 (overdrive-0.803:1)
3rd gear ratio......................1.296:1 (overdrive-1.04:1)
2nd gear ratio......................1.993:1
1st gear ratio......................3.122:1
Reverse ratio.......................3.323:1
Ovedrive type.......................Laycock D-type
Final drive.........................Hypoid bevel 4.22:1

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