My tailwheel spring came drilled with two holes for the stock Van's tailwheel. Some folks just drill a new hole through the tailwheel socket and spring to mount an Aviation Products tailwheel, but I prefered to match drill for the existing holes.
This is a clamp-on drill guide block. Clamp the block to the spring and drill it using the hole in the spring as a guide. Then position the tailwheel, flip the drill around, and drill the tailwheel socket using the block as a guide.
This is a clamp-on drill guide block. Clamp the block to the spring and drill it using the hole in the spring as a guide. Then position the tailwheel, flip the drill around, and drill the tailwheel socket using the block as a guide.
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