Radical Sportscars SR5 Owner'S Manual Download Page 12

SR5

 

2007

 

Radical

 

Owners

 

Manual.docx

 

 

issue

 

1

 ‐ 

22/11/07

 

‐ 

12

 ‐

 

Issued:

 

21/09/06

 

Note:

   

If

 

you

 

intend

 

carrying

 

a

 

passenger

 

for

 

the

 

majority

 

of

 

the

 

time,

 

the

 

above

 

procedure

 

should

 

be

 

carried

 

out

 

with

 

him/her

 

in

 

the

 

car.

 

BRAKE

 

BIAS

 

SETTINGS

 

Set

 

central

 

to

 

two

 

turns

 

towards

 

front

 

(clockwise

 

on

 

the

 

dash

 

adjuster).

  

Further

 

adjustment

 

can

 

be

 

made

 

to

 

suit

 

individual

 

circuits

 

and

 

tyre

 

configurations.

  

Adjust

 

bias

 

to

 

the

 

rear

 

in

 

wet

 

conditions.

 

GENERAL

 

CAR

 

PREPARATION

 

To

 

keep

 

your

 

Radical

 

looking

 

at

 

its

 

best

 

the

 

fibreglass

 

and

 

carbon

 

fibre

 

items

 

can

 

be

 

quickly

 

and

 

effectively

 

cleaned

 

with

 

polish,

 

while

 

all

 

chassis,

 

suspension

 

and

 

panel

 

parts

 

can

 

be

 

kept

 

looking

 

new

 

and

 

corrosion

free

 

by

 

wiping

 

them

 

down

 

with

 

a

 

cloth

 

sprayed

 

with

 

WD40.

 

DRIVING

 

TECHNIQUE

 

If

 

you

 

are

 

unfamiliar

 

with

 

a

 

sequential

 

shift

 

car,

 

it

 

is

 

recommended

 

that

 

you

 

change

 

gear

 

using

 

the

 

clutch

 

when

 

going

 

both

 

up

 

and

 

down

 

the

 

gearbox.

   

Once

 

you

 

have

 

become

 

familiar

 

with

 

the

 

technique,

 

changing

 

gear

 

going

 

up

 

the

 

box

 

can

 

be

 

achieved

 

by

 

lifting

 

the

 

throttle

 

slightly

 

and

 

simultaneously

 

‘snicking’

 

the

 

gear

 

in,

 

without

 

depressing

 

the

 

clutch.

  

On

 

down

changes

 

it

 

is

 

imperative

 

the

 

driver

 

depresses

 

the

 

clutch

 

and

 

raises

 

the

 

engine

 

speed

 

before

 

engaging

 

the

 

gear.

  

Smooth

 

gear

 

changes

 

can

 

be

 

best

 

achieved

 

by

 

using

 

the

 

‘heel

 

and

 

toe’

 

technique.

  

Only

 

change

 

down

 

one

 

gear

 

at

 

a

 

time.

 

As

 

with

 

any

 

dog

engagement

 

gearbox,

 

aggressive

 

gearchanges

 

will

 

damage

 

the

 

gear

 

dogs

 

which

 

will

 

result

 

in

 

gear

 

engagement

 

problems.

  

Only

 

use

 

a

 

maximum

 

of

 

6,000–7,000rpm

 

while

 

getting

 

used

 

to

 

driving

 

your

 

SR5.

  

If

 

you

 

accidentally

 

down

change

 

instead

 

of

 

an

 

up

change

 

you

 

are

 

less

 

likely

 

to

 

over

rev

 

the

 

engine.

  

If

 

you

 

do

 

over

rev

 

the

 

engine,

 

make

 

your

 

way

 

slowly

 

back

 

to

 

the

 

pits

 

and

 

check

 

the

 

yellow

 

recall

 

button

 

on

 

the

 

dash.

  

If

 

you

 

have

 

revved

 

the

 

engine

 

over

 

9,000rpm,

 

switch

 

off

 

and

 

return

 

the

 

engine

 

to

 

Powertec

 

for

 

inspection

 

immediately.

 

Ensure

 

that

 

the

 

tyres

 

and

 

brakes

 

are

 

fully

 

up

 

to

 

temperature

 

before

 

pushing

 

hard.

 

The

 

Radical

 

SR5

 

has

 

phenomenal

 

braking

 

performance

 

and

 

will

 

carry

 

considerable

 

speed

 

into

 

a

 

corner.

  

Practice

 

braking

 

hard,

 

but

 

come

 

off

 

the

 

brakes

 

smoothly

 

and

 

concentrate

 

on

 

carrying

 

speed

 

into

 

a

 

corner.

  

On

 

exiting

 

the

 

corner,

 

the

 

throttle

 

should

 

be

 

fed

 

in

 

progressively.

   

Driving

 

smoothly

 

is

 

the

 

secret

 

to

 

quick

 

lap

 

times.

 

One

 

final

 

tip:

  

CHECK

 

YOUR

 

OIL

 

LEVEL

 

BEFORE

 

EVERY

 

RUN

!

  

The

 

SR5

 

can

 

pull

 

over

 

2.5g

 

when

 

cornering.

  

If

 

you

 

do

 

not

 

have

 

the

 

correct

 

oil

 

level,

 

even

 

with

 

a

 

dry

 

sump

 

motor,

 

you

 

risk

 

starving

 

the

 

engine

 

of

 

oil,

 

with

 

expensive

 

consequences.

 

 

 

Summary of Contents for SR5

Page 1: ...SR5 Radical Sportscars SR5 Radical Owners Manual...

Page 2: ...ackday test day and racing miles This manual highlights many of the lessons and tips we have learned Do not start your car until you have read it Your Radical has been designed with one objective to g...

Page 3: ...L 8 DASHBOARD 9 REV INDICATOR 9 CENTRE LOCK HUB NUTS 9 AIR JACKS 9 GENERAL SETUP PROCEDURE FLAT PATCH 10 SUSPENSION GUIDE DRY SETUP 10 STEERING RACK SET UP PROCEDURE 11 RIDE HEIGHT 11 CORNER WEIGHTS 1...

Page 4: ...yellow light on the dash until the oil is warm When cold the oil can run at 100psi which may damage the oil cooler In the brake and clutch master cylinders use only high temperature racing brake flui...

Page 5: ...t because an amount of oil has drained back into the engine this returns to the tank when the engine is started 3 Crank engine to get oil pressure with ignition coils disconnected 4 Connect coils and...

Page 6: ...s important to log the number of hours the engine is run The engine should run for no more than 30 racing hours before being returned to the factory for a rebuild If the engine is stressed less i e tr...

Page 7: ...l or website www hewland com for changing gear ratios STANDARD SR5 GEAR RATIOS FOR CARS BUILT BEFORE 16 11 2007 Gear Part no Ratio 1 st CS 1608 12 35 2 917 2 nd FTR 15 33 HUB 2 200 3 rd FTR 17 31 STD...

Page 8: ...c pneumatic paddle actuated power shift system please refer to the manufacturers operating instructions BEDDING IN BRAKES The car comes fitted with carbon metallic brake pads To bed in the brakes and...

Page 9: ...revs to date last two digits not shown The maximum recorded revs display may be reset by the factory or by an approved Radical distributor CENTRE LOCK HUB NUTS Anodised RED for left hand side Anodise...

Page 10: ...TUP The car is set up at the factory but the final settings should be arrived at by testing for the particular driver s preference and the particular circuit Try to check the tyre temperatures for bal...

Page 11: ...ight spots RIDE HEIGHT The ride height may need increasing when carrying a passenger CORNER WEIGHTS For maximum performance the Radical should have the corner weights accurately set with the driver in...

Page 12: ...clutch and raises the engine speed before engaging the gear Smooth gear changes can be best achieved by using the heel and toe technique Only change down one gear at a time As with any dog engagement...

Page 13: ...SR5 DECAL DESIGN SHEET SR5 2007 Radical Owners Manual docx issue 1 22 11 07 13 Issued 21 09 06...

Page 14: ...SR5 2007 Radical Owners Manual docx issue 1 22 11 07 14 Issued 21 09 06 RACE TEST HISTORY Date Circuit Conditions Qual Posn Fastest Lap Time Result Time on Circuit...

Page 15: ...if the wing is used to push and particularly pull the car around in the pit lane garages and trucks It works perfectly to support the wing and the downforce generated in the direction intended and not...

Page 16: ...en damping rate is increased the car feels like it has got stronger springs 2 Increase step by step 5 clicks at the time the fine tuning by one click 3 Rain open 10 clicks from best dry setting LOW SP...

Page 17: ...sued 21 09 06 INTRAX DAMPERS SPRING CHART Part No Length mm Rate N mm Rate lbf in SP001 80 120 685 SP002 80 140 799 SP003 80 150 857 SP004 100 110 628 SP005 100 120 685 P006 100 130 742 SP007 100 140...

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