Cut them down to size with a hacksaw if you already have them. I would then recommend threading them on from the other end as the thread will likely get a bit damaged during the sawing process.
Oh no I already have them, I'll cut them but I meant too wide as in diameter, they are roughly 18mm across, while the bore is 12mm, I don't have an 18mm drill bit, whether or not that would help (Wheels get pretty thin below the shoulder) I don't know.
I found some of my old "blue" wheels the other day while having a clear out. You're welcome to them if you want?
What size are they Harry? and what bore?
100mm diameter threaded 3/8" UNF bore. Will just screw straight on.
PM'd You
Hi Porker. Have you tried some of the online selling website for the Robochallenge wheels (ebay or craiglist etc). You never know. I needed a platform a while back and found one on Craiglist. Had to drive 60 miles to pick it up, but worth it. I guess you'll be lucky but worth a try. Alternatively look at modifying something like the banebots wheels or think out side the box such as radio control race car supplier or Castor Wheels supplier. Im not sure if feel confident that melting the plastic would work however, as it would probably reduce its integrity.
I see, I hear that they stopped making the ones that can be fitted onto 3/8" UNF nuts, which can be mounted to Drill motors.
The hex hole wheels I have used in the past secure onto a hex hub. The bore of the hub as around 0.5mm larger than a drill motor but a thin copper shim allowed it to be used. I'm not sure what the current status of banebots manufacture is.
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