Is the golf shaft the most misunderstood piece of equipment in your bag? I’d wager it is. I have a buddy – several actually – who routinely drop $350 on a ...

With a new frame and motor for this year, the 5th generation Trek Rail+ is packing a bigger battery and a whole lot more ...

If you want a gear with a particular diameter you can get close by seeting the module to d/teeth, but that specifies the pitch ... A worm drive is a gear system for connecting skew shafts at 90 ...