Apek Maxpad Manuel du propriétaire télécharger pdf (Page 14)

Front of Kart

Maximum

Caster

Minimum

Caster

Central Caster

CASTERCAMBER

Positive Camber

Negative Camber

FRONT END ALIGNMENT (cont)

this in a car or, in our case, kart is called Ackerman. The outside holes give almost parallel steering

meaning front wheels turn at almost the same rate one to the other. In using the inner hole offered on

each stub axle, the kart will have more Ackerman or, in other words, the more the inner stub axle will turn

in ratio to the outer stub, (or, if you like, the more the toe-out increases as the steering wheel is turned.)

On the track increasing Ackerman has the effect of increasing ‘turn-in’ of your kart. It forces the inside

front tyres to work more as well as increasing the mechanical chassis jack effect, or in other words

will increase the amount of lift off the track you’ll get with the inside back tyre through a corner while

at the same time increasing the mechanical grip of the outside back tyre. This is all good stuff but like

all good things in life too much can be bad!

On a track which offers a lot of fast sweeping corners with a fast corner leading onto the longest

straight, running a lot of Ackerman can reduce your top end speed. It’s like setting the kart with

toe-out where the front tyres become dragging front brakes. On a track with lots of ‘stop, turn, go’

180° type corners, lots of Ackerman will really help. The kart will change direction quickly without

overworking the outside front tyre while the engine will be helped on acceleration out of the corner

with the added chassis jacking offering a greater differential

effect (see ‘Height Adjustable Front Stub Axles’).

All Arrow karts offer adjustable Ackerman on the steering

column where the tie rods are bolted to the steering column

‘spade’. When supplied from the factory, the tie rods will be

bolted on at the bottom two holes of the spade. Bolting both

links into the upper holes will lighten the steering N.B. It will

very slightly make the steering less responsive and will need a

little more lock to achieve the same amount of steer.

3. ADJUSTABLE CAMBER AND CASTER

12 FRONT END ALIGNMENT

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Apek Maxpad Manuel du propriétaire Page 14