Time Trial Bike Vs Road Bike: What’s The Best Triathlon Bike For Climbing?


(electronic music) – In a triathlon it’s not unusual to experience all types
of terrain in one race. Now we all know that the TT
bike is fast on the flats. But how much time are we losing with it on the climbs, if at all? So today, I’m going to
be testing just that. I’m going to be riding as hard as I can for two efforts up Sant Salvador. The first, on the P5X which
weighs in at 10 kilograms. And then the second on the Cervélo S5 which weighs in at seven kilograms. So let’s give this a go. Sant Salvador climb is 4.8 kilometers long and averaging around 6.4% in gradient and it actually has a
little bit of everything for both bikes. It starts with a relatively steady and straight section
for the first kilometer. It then moves into some
tighter switch backs and after two kilometers it really starts to kick up as it continues to weave up to the Sant Salvador Monastery on top. (electronic music) First run, P5X, let’s go. (intense upbeat music) (breathing heavily) That’s run one done on the P5X. I felt pretty good. Let’s see how the S5 compares. Run two on the Cervélo S5, here we go. (upbeat electronic music) (breathing heavily) So that is round two complete on the Cervélo S5. Again, I think it went pretty well. So now it’s just a case of sitting down and comparing my times and my data to see which one comes out on top. So, that’s both the climbs done and now I’ve had a
little time to chill out and have a brew and to
look over the results. And interestingly, I managed
to average a similar power for both climbs between 383 and 385 watts. So let’s take a look at the times. For the first run, on the TT bike I went 15 minutes flat and then on the second
run on the road bike I went 15 minutes and two seconds. This is a fascinating result that to be honest, has
really surprised me. I expected the weight to
play a much bigger part. So my money was certainly
on the road bike. Now, despite the road
bike being my second climb I held the same power and had a good break in between runs. So it really shouldn’t impact the results. So why has the TT bike come out on top? Well, my thoughts are that the gradient still lends itself to the TT bike. It’s a tough climb, but I was still able to maintain a good speed bringing aerodynamics more into play. Especially the first
kilometer that was straight with a shallow gradient. However, what this does show is that the TT bike is
no snail on the climbs. But I would like to test this further on something steeper and longer where the weight may have a bigger impact. And to see more videos from
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