Has anyone performed the product improvement provided some time ago? I've got the parts and the new main tires need the extra clearance. I'm concerned about getting this done right. This is the note from Lancair as a reminder. I've not found the listed countersink anywhere.
Thanks,
Paul Miller
N357V Spruce Creek, FL
Option 1:
You may change the fork attach bolts from the originally supplied hex head bolts to a countersunk bolt. Lancair will supply the necessary hardware needed to make the change at no charge. To modify the fork, you should use a 5/16 pilot 100° countersink until head is flush (nominally .133 deep). This change will increase clearance between the standard tire and the fork by .375” and will also provide a smooth surface on the fork’s inside surface to eliminate tire tread grooving.
Hardware to be supplied: 8 x AN960-516 washers
8 x MS21042-5 nuts
8 x MS24694-S156 screws
2 x MS24665-292 cotter pins