http://www.timetrial.org/firsttt.htm
and:
Time Trial Racing on a Shoestring
By Gary Tingley
Welcome to the greatest endurance sport known to man! Often called the “race of truth”, time trial racing is one of the purest representations of rider’s power and endurance, you cannot hide from the clock. New riders may be intimidated by all the flashy bikes, clothing and helmets they see at the races, but it is important to remember that time trial racing is 90% rider and only 10% gear. Of that 10% (gear), a rider can achieve 90% of the performance of the most high zoot gear on a budget, with the following tips:
Clothing & Helmet
These items are very important aerodynamically, and relatively cheap: Skinsuit: If you can get a deal with your club, use their skinsuits, if not (or you race unattached) then get a $70 Voler skinsuit from www.velowear.com Helmet: If a $100 Garneau Prologue is out of your current budget, you can get almost the same aero benefits by simply covering the vents in your current road helmet using clear packing tape. Shoe covers: These are not very important, saving only a few seconds over a 40k, but you can get a $27 set of Assos shoe covers at www.excelsports.com and they come in multiple colors.
Aerobars
The most important upgrade you can make to convert your road bike to a TT machine is to add a good set of aerobars, clip on aerobars can be added to your existing road bars: Ebay: Aerobars galore. Profile and Syntace clip ons are your best bet. Profile Design: The least expensive clip on aerobar set is the $65 Century bar (www.profile.com), which will meet your TT needs.
Wheels
An upgrade from ‘box sections’ wheels to aero wheels is a significant upgrade and you will see significant time improvements. You don’t need a set of $1700 Zipp 909’s to be fast. You will first want an aero front wheel, then a deep section rear wheel - or even better, a disc. You can get started with deep section wheels from various sources: Ebay: look for older but quality Specialized or HED Trispoke front wheels (which run $200 - $300 normally), deep HED front wheels (e.g. Stinger), older Corima and Zipp deep front wheels, and older Corima, HED, Jdisc and Zipp discs, avoid the aluminum disc models that are very heavy. Build your own front wheel by using a Velocity deep dish aluminum rim paired to a nice hub. Renn disc: www.rennmultisport.com (or bicyclesports.com) have sub $400 rear disc wheels which are very nice, and they are rumored to have an inexpensive front deep carbon model coming in 2004 Build your own disc covered wheel
Frame
Guess what? The bicycle frame is one of the least important aerodynamic parts of a bicycle, so this upgrade should be way down on your list. Use your current road bike with the aero wheels and clip on bars, get fit properly and have fun!