gtownviking,

(1) http://en.wikipedia.org/wiki/Bokeh
(2) I think everyone here agrees your photos are pretty good already. I'd suggest you simply work on those few small tweaks first, and then see how things look after that. Just re-perused your shots, and it's obvious from your detail shots that you understand basics of photographic composition. As everyone's pointed out, the depth-of-field you use is working well, and your lighting simply needs tweaking. I'll only add one more comment on top of my previous one about using more indirect lighting: For the kind of shots you're taking here, the more diffuse the light you use, the more evenly the colors and shapes of the subject matter will come out. Not only will bouncing light help, but also, adding additional light sources can help. I have no idea how many light sources you're using, but if you need more, clamp lights from Home Depot or Lowe's are like 8 bucks; if you use 100-watt bulbs (or the 'green' equivalents) and bounce that light, it could help. Note you can enhance certain effects by using multiple sources to highlight things, as well--that is, you don't just have to spread them all round the bike, but rather, you can use them to place certain areas in a "warm glow" and leave other areas darker, etc.

This is simply added suggestions for you. As I mentioned before, your pics are pretty good already.