Ok on my contest robot i have 2 motor laying inside of the chassie. Its wholes in each side so the tiny metal pin is coming out. The problem is that im using wheels with a center whole bigger then the diameter of the pin, i have done this before by just glueing it on but now the pin is so small couse most of the parts arent coming completely out of the whole through the chassie that i dont thing it would help glueing the small pin to the wheel. So i was thinking of something i could glue on the pin to make it a little thicker and longer but i havent found anything yet. But the i looked through a page here on this page where you (The admin) explained how to mount a wheel to a servo, you did this with screwing a little red cross onto the wheel. I studyed the picture and i saw there was a little whole in the middle, im not sure if its big enough for my motor pin but still it worth a shot. Anyhow you mentioned you would get the red crosses in the servo package so im wondering if there anywhere i could by theese crosses without beeing have tobuy an servo to.
Here is the picture i was talking about.
PS: if you got any other ideas i would love to here them!