Making the Spokes

 First I created a 6 sided cylinder to create the center of the spoke, then using the spline tool drew a line out from the cylinder, roughly following the shape of the spoke. Next to create the 3D shape of the spoke I extruded along a spline.

Next I moved the vertices around to untangle the spoke's shape, and to better match the shape of the spoke, then used the swift loop tool to add extra quads to the spoke.

Using the rotate tool with angle snapping turned on I held down the shift key and rotated the spoke 120 degrees and made a copy of the original spoke, then I repeated the same steps to copy a third spoke. I deleted the polygons on two of the spokes so I could attach the spokes to each other. Next I welded the vertices of the spokes to the hub after deleting an obstructing polygon between both of the spokes.

To help create the hub I turned on edge mode and then selected one edge on every spoke and hit ring and then used connect to make a line through the middle of each spoke. Next I selected the edges opposite each up and used connect to make a cut through the middle of the edge. Then I used cut to connect the middle vertex on the spoke to the vertex opposite it, and did the same process for every spoke and then did the same thing on the other side.

I selected all the vertices around the edge of the hub and used the scale tool to give the hub a rounder shape. Next I selected the edges of the spokes using ring and then converted the selection to vertex and used the scale tool to give the spokes a rounder shape after deselecting the middle vertices of the spokes and the vertices of the hub.

Turned on NURMS and then increased the iterations up to two. Then using the swift loop tool I added definition where the hub met the spokes. Next I converted my selection to vertices and selected the middle vertices and then converted to polygon to select the sides of the hub and then used inset and then added another inset. Next I extruded the insets and added a crease to the extrusions on both sides of the hub.