Module 10 - Weight

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Module 10 - Weight


This section is applicable to the Clerk of Course, Assistant Clerks of the Course, Chief Steward and KartSport New Zealand Stewards on the panel.


You may be part of the machine examination process at the start of the event or be required to make a decision on weight during an event.



L1 WEIGHTS: (Minimum all up weight - MAW)


L1.1 Unless otherwise specified weights and/or containers affixed to a kart to meet MAW requirements must be securely through bolted and lock-nutted to the permanent elements of the kart. Weights affixed to the seat must be through bolted with 30mm diameter minimum body washers placed immediately under the nylock fixing nuts and 30mm diameter minimum countersunk washers placed immediately under the bolt head on the inside of the seat. All through bolts must be a minimum of 8mm, be lock-nutted and have 30mm diameter minimum body washers or countersunk washers placed immediately under the bolt head and the nylock nut respectively.

A weight bracket made of flat mild steel bar minimum 30mm's wide by 5mm's thick may be used to attach weights to the kart. The bracket is to be mounted between the factory LHS lower radiator mount and LH top seat seat mount ONLY, with 8mm minimum bolts. Total amount of lead weight to be attached to the bracket is 8kg maximum and all individual weights over 3kg must be secured by more than one bolt to the bracket. Where the weights are back to back on the bracket one through bolt can secure 4kg Maximum or two bolts 8kg Maximum. The bracket has to be mounted as close as practical to the factory LH seat support and similar construction as shown in photo.


A plastic bottle with a robust screw cap may be used as a container for lead shot or loose material but must be located within the confines of the steering uprights. Bottles must be SECURELY taped and/or strapped to the steering upright.

When weight is added within the kart frame tubing, the open end of the tube must be plugged. A 6mm bolt must pass through the tube and the plug. No weight may be carried lower than the floor pan. Unless otherwise specified, tape, hose clamps, tie wires or fasteners other than steel bolts are not legal for securing weight to karts. Individual weights heavier than 3kg must be secured by more than one bolt. Carrying of weight on a driver’s person is prohibited.


M13 Checking Minimum All Up Weight - MAW


M13.1 MAW is kart and driver in full racing gear after any race or time trial.


M13.2 Drivers in weight controlled classes may be required to present karts for weighing at scrutineering.


M13.3 Where the weight factor governs a class, no tolerance will be permitted. A competitor can expect to be weighed upon entering the Pit Shute during or following any time trial or race and must comply with the weight limit(s) specified. A competitor failing the first weigh in is permitted a maximum of two reweighs. Each reweigh must immediately follow the initial weigh in/reweigh respectively. The competitor and kart must remain at the scales during the reweigh process. Any competitor under the MAW after competition in any time trial or race will be excluded from that time trial/race. The weight of the competitor and/or kart will be determined by a Judge of Fact. Only the weighing procedure may be protested.


M13.4 The scales of the day are to be taken as correct and no protest as to their accuracy will be entered into.

The scales of the day are the scales of the day.



Procedure for reweighing a kart.

1.Remove the kart from the scales by lifting straight up.

2.Zero scales.  Ensure the competitor notes the scale at zero.

3.Replace kart and driver to stand on the scales.  It is permissible for the driver to stand in any location on the scales but they cannot move around from one location to another.

4.If the MAW is not met, repeat the above procedure only one more time. At any point if the MAW is reached, the competitor may leave the scales area.

5.If the MAW is still not met, advise the competitor that he/she is excluded from the heat, time trial etc and to please return within 15 minutes with their Competition Licence.

6.Complete a Judge of Fact PNR Form and pass this, together with the competitors licence to the Clerk of Course.

7.The Clerk of Course will then complete the PNR and have the competitor sign this as accepting the penalty.

8.The PNR then goes to the Chief Steward for sign off and to write the penalty details in the competitor’s Competition Licence in the Penalty Section.

9.Chief Steward to advise Race Control.

Note:  If the competitor leaves the Scale Area, no further reweighs can take place.  If a reweigh is to take place, and the competitor needs a guardian hold checking of other competitors until the guardian is able to view the reweigh procedure.