I’m new to this forum, so please forgive me if I use it the wrong way or post something on the wrong forum.
Together with 5 other young guys, I’m participating in the eracup (www.eracup.net). A competition where people aged between 16 and 24 build their own electric go-kart like vehicle. A chassis and requirements to get it running are supplied. From there on, teams need to design and create a bodywork and upgrade their kart to their liking to be the fastest.
We’re working with a 1kw electric engine (which we unfortunately can’t change). The standard gear ratio is 11:44 (11 teeth on engine and 44 on rear axle) and a T8F chain is used. We’re looking into changing this gear ratio, but aren’t sure what ratio would be ideal. The rpm of the engine is in between 2700 and 3100 (we haven’t been able to test that very well yet). Our kart is quite heavy, since the chassis is compeletely made out of steal and has the form of a small racecar, so it goes over the legs etc. too. We have considered designing a simple gearbox, to improve both acceleration ánd top speed, our current top-speed is namely only about 27-28kmh, but we aren’t sure whether this would even be beneficial.
Would you have any tips on gear ratio? What is your opinion regarding a 2-speed gearbox? Or does someone know something else that could help us with this?
Thanks in advance!
Lars - Black Lions Racing Team