Power training is touted by all the experts as the best thing since the heart rate monitor. Now that powermeters are widely available, athletes can now monitor the true output of performance, which is watts. The greater the watts, the more power you are generating. It is true in all conditions, rain, wind, etc. Everyone I know that uses a powermeter swears it is their most important tool.
Ok, I was sold and decided this was the year I was going to introduce power into my training. So, after research I concluded the Saris PowerTap was the powermeter for me. If you think you could just go buy one and get it installed, think twice. PowerTaps only work with certain wheel sets. Certain wheels have different number of spokes and not every bicycle shop installs them. Plus there are many different models to choose from. So, I got lucky in that my 24 spoke American Classic 420s were compatable with the Powertap. Here is what I suggest you do if you decide to try and retrofit your old wheel with a PowerTap (the easiest is to just buy a new wheel, if it is time, with one already installed).
1. Figure out if your wheel is compatable. Call your wheel provider to make sure.
2. Count the number of rear spokes you have so you know what PowerTap to buy. I think 24 is a common number
3. Figure out what kind you want. If you have multiple bikes, wireless is a must. The Elite model does not have heart rate monitoring, the Pro+ does. The SL has fancier featurs like a 14mm hub which is stronger and SL+ has ceramic bearings. I went with the Pro. Also important to know is that the 2009 models are ANT compatible. ANT is an emerging communication standard. This is important because if you decide you want an ANT compatible device in the future, like a Garmin 705m your hub will work.
4. Search the web for a deal. MSRP is the same everywhere, but many shops offer dicsounts. I believe buying one on eBay nullifys the warrenty, but double check.
5. Check with your local store to see if they will match the price. If they won't, see if they do installations. Some won't touch them.
