Here's another use for the old front rims yu remove and toss when building them racers. Many of the hubs have bearings in the and use the standard 1-3/8 o.d. bearings. So using a saws all cut thru the rim near the center weld as pictured below till it cuts the center hub off.
Here is the center of the wheel after cutting the hub off
here you see this center hub now welded in as used as a steering column bearing support.