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Karting Technical Tips

Tyres: Budget versus Top-End

Competiton tyre versus budget tyre How does a kart feel when it runs on budget tyres and then competition tyres? We find out. Let’s roll! You can easily spend £150 on a set of tyres for your kart or you could take the budget option and get a set for £50. But what’s the difference? We pitched a set of ... Read More »

The complete kart buying guide

By Jerry Thurston CHASSIS Is the chassis damaged? Carefully prop the chassis up onto its rear bumper and look at the underside. Are the tubes unduly damaged? Repeated contact with kerbs grinds the chassis away, a few scratches are normal but beware tubes that have been worn almost flat. Check the entire chassis for cracks, cracked tubes or cracks in ... Read More »

Karting Tech Talk: Transfer Ports Part 1

We have looked at a number of scavenging solutions used in the past as well as currently in 2-stroke engines, focusing on petrol competition engines for karting. Now we need to understand how the combination of exhaust and transfer ports leads to certain types of scavenging and how modification of the transfer ports leads to changes in the gas flow ... Read More »

Tech Talk: Chassis Tuning Part 4

The first thing that one does when working on kart setup at the track is to vary the rear and front carriage width. We have already seen chassis setup part 3 and 4 how rear and front carriage can be regulated and what effects it has on chassis setup. It is interesting to go deeper into such topic analysing all ... Read More »

Tech Talk: Transmission Ratio

Transmission ratio is determined by the gears of the engine and the rear and front sprocket. In KF classes only front and rear sprocket act on transmission ratio. What happens is that torque generated by the engine on the crank-shaft acts on front sprocket. Since torque is equivalent to a force multiplied by a length we can consider the force ... Read More »

Track Testing: Is more weight an advantage in the wet?

We decided to head out for for another track test on a Saturday morning…and it was raining. We then had a good occasion to go back to try the weight effect test, but this time on a wet track. It is in fact true that with wet track conditions heavy, tall, or both, drivers suddenly become much more competitive. Why ... Read More »

Tech Talk: Engine Tuning Part 5

One of the main aspects of two-stroke engine performance is scavenging. The way fresh mixture enters the combustion chamber and burned gases exit through the exhaust ports determines the quantity of mixture burned in each cycle of the engine (each rev for two-stroke engines) and the way it is burned. Quantity of ports A modern two-stroke competition engine for 100cc ... Read More »