The first question I would ask is whether you got good control of the tony without the lead.
If you did, the positioning the lead is a case of calculating the weight and balance before you bolt it on.
If not, then you need to experiment with the seat position until you do get good control (without the lead). That weight of lead just complicates things.
When you have found good control, then add the weight to neutralise the effect around your centre of gravity. Thus if you add 11 Kg to the seat back (about 10 cm from your CoG in the seat, so 110 kg cm) then you need to add 110 kg cm in front of your CoG. This could be 11 kg at 10 cm, or 5 kg at 20 cm and so on. where the distance from the CoG in CM times the weight in kg=110).
So 2 kg between the front axles 60cm forward of your CoG in the seat can be used to 'balance' a weight of 12 kg 10 cm aft of the CofG in the seat (on the back of the seat)
Of course, you can stick a load of lead under the seat, shaped to fit in the 'anti-dive', that mound in the front of the seat that is supposed to help locate you in the seat when you are trying to slide forward under braking and cornering. You can beat a lead bar to fit, or take a mould and melt lead to shape. Depending on the seat you can get about 3 kg to fit in snugly and its about 5cm in front of the CoG.
2+12+3 still leaves you 5kg short. This can be bolted either side of the seat on the line of the CoG.
Does that help?
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Positioning lead weight by 'kartster' (11 Jan 2011 @ 21:22)
