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Jim Thode | profile | all galleries >> Unicycles >> Three hole KH Spirit crank tree view | thumbnails | slideshow

Three hole KH Spirit crank

Starting with a 127/150mm KH Spirit crank I added a third hole at 109mm.
I've been riding the 36er with 127/150mm cranks in the 127mm hole for a couple years and thousands of miles. I wanted to try shorter cranks for level road riding so I add a 109mm hole on my cranks. The Park Tool 9/16-20 taps are not recommended for cutting new threads but with the tap held straight with the new hole, they cut very well.
On unicycle in 109mm hole
On unicycle in 109mm hole		 Clamped and ready for drilling
Clamped and ready for drilling		 Started drilling with a short countersink
Started drilling with a short countersink		 Drilled 1/2 hole
Drilled 1/2" hole
Pin in chuck and hole in T handle holds tap straight
Pin in chuck and hole in T handle holds tap straight		 Tapping Treads
Tapping Treads		 Tapping
Tapping		 Threads Cut
Threads Cut
109, 127, 150mm holes
109, 127, 150mm holes		 Pedal installed
Pedal installed

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