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This was Ronald's response in regards to the threaded top request:
That's not a problem but I cannot guarantee against breakage at or above the threaded area. the standard shaft is approx 15mm in diameter. For a shift knob to safely work you would need the threads to be used strictly for retaining the knob and not to be subject to shear. I.e you would need the knob to apply force to the 15mm shaft and not to the threads. Thus the knob in question must be checked for dimensions that would allow the force to be applied to the 15mm shaft. please remember that the outer lever is 6061 t6 aluminium and not steel.
Hope that explains my position in this regard.
I told him that you guys wanted 10x1.25 thread pitch, at 1 inch length down from the top tip of the lever.
Diokef and Dorifto, please let me know ASAP if you guys still want to proceed with the threaded request. All these need to be sorted out before Ronald can go ahead into production.
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