Time Trial / Time Trialling / TT

Finally my new chainring has arrived. I took the decision to jump up from a 46 to a 50 giving me an increase of 6.5GI (75.5 - 82). In theory, if I spin at the same speed as I've been doing, I should knock 2 whole minutes off my time.

Anyone care to predict whether that will happen?

If it was that easy, I'd put 150" on my race bike and take the competition record