I'm using an old, manufactured, heavy, 2 seater kids kart frame that was previously gasoline powered. I have plenty of space to mount motor, batteries and controls.
To begin the process of creating a custom kit we need to ask a few questions about the design goals for the project:
Motor braking is only available with our brushless controllers and it its braking force is mild to moderate so it needs to be used in conjunction with a mechanical brake. The least powerful brushless motor that we carry is 1600 Watts and these kits start at around $530.00 with reverse.
A 500 Watt brushed motor could achieve 15 MPH under the condition which you described and 500 Watt brushed motor kits start at around $320 with reverse.
We do not carry motors with belt cogs over 250 Watts and for a 15 MPH top speed, a 500 Watt or larger motor would be needed so that would point toward using chain drive. Without the noise of a gas engine the chain becomes the loudest part of the vehicle so although the go-kart will be quiet compared to one with a gas engine, however, the chain noise will be noticeable and will be the loudest part of the go-kart.
When dealing with smaller tires like that the top speed difference between a 10" and 13" tire is around 30% so we will need to narrow down which tire size will be used before running any top speed calculations to figure out the sprocket sizes.
Here is an example of a 500 Watt go-kart kit: https://cart.electricscooterparts.com/ProductDetails.asp?ProductCode=KIT-137-B
And here is an example of a 1600 Watt go-kart kit: https://cart.electricscooterparts.com/ProductDetails.asp?ProductCode=KIT-481600-16
Both of the kits above have battery packs that will provide a ride time in the 30-45 minute range. We can make new versions of these kits with larger batteries for a longer ride time.
Please let us know your thoughts and we can take it from there.
Thanks for the response!!
What is the the overall the height of your listing: "4.10-3.50/4 Heavy-Duty All-Terrain Knobby Tread Electric Scooter Tire" ?
My apologies for the late reply. Our 4.10-3.60/4 tire has a height of 10.5 inches.