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Go-kart upgrade: plastic "wheels" to real tires Answered

My son received a Kettler Go-Kart (2nd hand adventure) for Christmas, and it's a lot of fun, even for the mom who crams herself into it to give chase to the kids (make great tight turns).

Goal: take it a bit more off-road than asphalt and smoothish ground.

Currently: Plastic, rear wheel drive wheels (think Hot Wheel front wheel material we grew up with).

Where I'm at, after perusing the internet for all things pedal go-karty:
I feel like the front wheel assembly will be pretty easy to replicate. The nature of rear wheel drive, which stays straight (fixed) is the challenge. Images attached.


What's the answer to the rear wheel drive assembly? How to replicate rear fixed driving wheel with wheels available at the big box store, or is there another question that needs to be answered first? is the chief concern prior to fully disassembling the go-cart.

And/ OR, What are the magic words for finding the "wheel" answer?


Thank you in advance!

Discussions

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Downunder35m
Downunder35m

Best Answer 2 months ago

One cheap option that comes to mind are trolley wheels.
The cheap ones come for under 30 bucks with the hand trolley, but the wheels are more plastic than rubber.
Replacement wheels with propper rubber and a tube inside cost a bit more than a complete trolley - go figure...
Either way, the bearings are quite esy to remove, some wheel have them just pressed in, other hiding behind a scre on cover - more expensive and not really required for this.
With the bearings removed you have enough space to put a machined adapter inside for the axle.
To make things easier later on I recommend replacing the axle in favour for a suitable round bar with the adapter for the wheels welded on or as a slip on with a locking pin.
Whatever fits your skillset and workshop.
Like for example weldin the adapter directly to the wheel and having it removable through the locking pin on the axle.

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An1more
An1more

Answer 2 months ago

Love this, "to put a machined adapter inside for the axle.
To make things easier later on I recommend replacing the axle in favour for a suitable round bar with the adapter for the wheels welded on or as a slip on with a locking pin." thank you!

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Downunder35m
Downunder35m

Reply 2 months ago

No problem at all!
Just trying to provide ideas here, how you use them and how change these ideas to make it fit for you is yours ;)