Finished my first sprint distance triathlon this weekend. .33 mile swim, 17 bile bike, 5k run: 1:24.11... and did it on a singlespeed Specialized Langster. I set my seat forward with a reversible Bontrager seatpost and threw some Profile T2+ on the front, which afforded me a pretty decent position. I was very comfortable and averaged 20.48 MPH.
Next season I'll be able to buy a new bike, this time with gears. I plan to spend a decent chunk of change, and my Aunt and Uncle own a bike shop, so I can get a discount on Trek and Litespeed bikes. I probably do not have enough cash to go aero, but I'm wondering a couple things:
Over an Olympic distance, how much time could I expect to save by using a TT/Tri bike rather than a road bike, modified with a set-forward seatpost and aerobars?
How much time could I expect to save by using deep-section wheels?