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Dr_T
RC-Monster Carbon Fiber
 
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Posts: 133
Join Date: Oct 2014
Location: Germany
03.03.2015, 05:41 AM

Finally tried preparing the Traxxas XO-1 cushdrive key for use as spur-to-pinion adapter, but wasn't very successful...

With a lot of effort I managed to drill a 2.5 mm hole in it (HSSE Cobalt drill), but then it cracked when I tried tapping the M3 thread (at about 1/3rd in). The material is extremely hard and it took very long to drill the hole, maybe because of that the hole needed to be a bit bigger diameter for the thread to be tapped?



   
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