As part of an upgrade I need to change the 4 mm flexshaft on my HK Libero to a 3/16" shaft. I hope to use the Speedmaster 21 strut with rotating bushing as part of the upgrade. The Speedmaster strut requires a K&S # 131 1/4" brass stuffing tube. I am thinking that I may fit a stuffing tube with no teflon liner.
Here in lies the issue, what size stuffing tube should I use with no liner, please? I have read that 7/32" tubing is suitable. 1/4" would be convenient as I could run it right through the strut for the rotating cross drilled bushing, however, the 7/32" would make it simpler to convert the existing stuffing tube for easier installation of the stuffing tubing through the hull apperture. Would I use a combination of 7/32" tubing from the hull to the strut and then the 1/4" within the strut barrel? If a combination then how far should the 1/4" tubing overlap the 7/32" tubing?
Here in lies the issue, what size stuffing tube should I use with no liner, please? I have read that 7/32" tubing is suitable. 1/4" would be convenient as I could run it right through the strut for the rotating cross drilled bushing, however, the 7/32" would make it simpler to convert the existing stuffing tube for easier installation of the stuffing tubing through the hull apperture. Would I use a combination of 7/32" tubing from the hull to the strut and then the 1/4" within the strut barrel? If a combination then how far should the 1/4" tubing overlap the 7/32" tubing?
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