Рет қаралды 36,811
In this video I show you a special device made using a Sherline mill machine in order to do an adaptation of a new Crown in a japonese Shimano pedal crank.
The new Crown is more thick in the screw location hole, so will need the a reduce of thick because the original screw shorter.
The device will permit a perfect center and a safe machining interpolation.
Device material - 6351 aluminum
Crown of bike - 7075 aluminum alloy (another video)
End mill - Tungstain carbide steel - 6 MM
Threads cutter tool - 3.9 mm carbide steel made by myself ( broken drill)
RPM - 10 K
Cutting fluid.- kerosene 80% mineral oil 20%
More detail - Facebook - at Tryally Tech page.