DLE DrilDLE 111/85/120 Drill Guide

The DLE DrilDLE drill guide for the 111, 85 and 120 engines. It is a hardened guide that locates the drill bit precisely when drilling the propeller bolt pattern, so the holes come out on the correct circle and at the correct spacing.

Drilling a propeller freehand is a good way to ruin it: the holes have to be evenly spaced on the correct pitch circle, and a hole that is off position means the propeller will not seat flat on the hub, which lets the bolts lose their clamping load. A guide takes that out of the operator’s hands by constraining the bit to the right place.

Covering the 111, 85 and 120 means the same guide serves three engines whose propeller bolt patterns share geometry. Check it suits your engine and propeller hub before drilling.