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There is no need to drill holes.
These are called Collets. Couplers have set screws on both the motor shaft end and the cable shaft end. Both collets and couplers serve the same purpose, they connect the drive shaft to the motor.
Buy a Collet with a 5mm hole to fit the motor shaft, and whatever size hole on the shaft end to fit the shaft size you choose to use.
Here is a comparison of the shaft sizes between .150" (stock) .187", and the .078"
Replacing the collet and shaft is a fairly straightforward "bolt in" process, there is no need for gluing, soldering, or drilling holes. Just take out the old stuff and bolt in the new stuff.
After you replace the shaft, be sure to remove it after every 2nd run or so, clean it off, and a give it a good coat of fresh grease.
Kevin
These are called Collets. Couplers have set screws on both the motor shaft end and the cable shaft end. Both collets and couplers serve the same purpose, they connect the drive shaft to the motor.
Buy a Collet with a 5mm hole to fit the motor shaft, and whatever size hole on the shaft end to fit the shaft size you choose to use.
Here is a comparison of the shaft sizes between .150" (stock) .187", and the .078"
Replacing the collet and shaft is a fairly straightforward "bolt in" process, there is no need for gluing, soldering, or drilling holes. Just take out the old stuff and bolt in the new stuff.
After you replace the shaft, be sure to remove it after every 2nd run or so, clean it off, and a give it a good coat of fresh grease.
Kevin
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