Just wanted to ask some people with knowledge in the area how much effect weight has on posting a fast lap time in a go kart. The track is a really bendy one, my best time is a mid 39 second lap. My friend who comes with me has also set a mid 39 second lap but roughly 1 tenth slower. He weighs 60kg and i weigh 115kg.So what impact is it possible my excess weight is having on my lap times, if any?

Any help will be apprecited.

I didn't find the right solution from the Internet.

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Thank you.