I have a Ti Litespeed road frame which is about 9 years old now, and also an Al Specialized Transition TT setup, about 5 years old. Both are well-maintained. Recently I started using Strava for comparing rides and this has shown some something odd; the Specialized seems faster even when climbing and when not using the aero bar position.
To test this, I have over the last week or so done four test rides, two on each of 2 different days. Each ride is 10 miles and involves 190m of climbing. For the first day's testing, I rode the Specialized first, waited 5-10 minutes then did the same ride with the Litespeed. For the second set of tests I did the same but in the other order, to try to eliminate differences due to tiredness and/or not being 'warmed up' enough.
The bikes are set up the same; I have measured all the standard distances (saddle / crank, saddle to bars, height of bars, etc) and they are all identical to within 1 cm. The two machines weight the same to within 200g.
On all tests, the Specialized is on average 4% faster than the Litespeed. Up the main hill (a climb of nearly 100m) it is about 10% faster!
Remember for these tests I'm not using the aero bars at all. I would certainly expect the Specialized to be faster on a flat TT course and using the aero bars, but what could cause this difference I am seeing on a hilly course with identical riding positions? Could the Litespeed frame be faulty in some way? I've done probably 20k miles on it. That extra 4% could be all I need to stay keeping up with others on my club rides, which I am finding more difficult these days.... Thanks for any suggestions!
To test this, I have over the last week or so done four test rides, two on each of 2 different days. Each ride is 10 miles and involves 190m of climbing. For the first day's testing, I rode the Specialized first, waited 5-10 minutes then did the same ride with the Litespeed. For the second set of tests I did the same but in the other order, to try to eliminate differences due to tiredness and/or not being 'warmed up' enough.
The bikes are set up the same; I have measured all the standard distances (saddle / crank, saddle to bars, height of bars, etc) and they are all identical to within 1 cm. The two machines weight the same to within 200g.
On all tests, the Specialized is on average 4% faster than the Litespeed. Up the main hill (a climb of nearly 100m) it is about 10% faster!
Remember for these tests I'm not using the aero bars at all. I would certainly expect the Specialized to be faster on a flat TT course and using the aero bars, but what could cause this difference I am seeing on a hilly course with identical riding positions? Could the Litespeed frame be faulty in some way? I've done probably 20k miles on it. That extra 4% could be all I need to stay keeping up with others on my club rides, which I am finding more difficult these days.... Thanks for any suggestions!