[Evil Robotics]

For our ball luncher we started off with a foam filled 4 inch wide wheelchair wheel. It was about 12 lbs, and kind of chewed the balls due to the heavy tire tread.

Now we are using two 12 inch diameter pneumatic wheels from the FIRST kit two years ago. They are driven by a 5/8" diameter keyed shaft.

Do you offer any foam filled versions that would be the same form fit. We are looking for heavier exterior weight and therfore more interia to keep them from being slowed down by launching a ball?

If yes what is the difference in weight?