Ok...So I have a 46/36 CX crank on my Warbird... 11-30 in the rear...
Now, I have two hill where I drop into my lowest gear in order to make it. I don't like running out of gears; I am getting in shape...but I like having a failsafe envelope.
My longest rides have been upwards of 50 miles. I'm looking to open that up to 100... hopefully someday within the next two years I'm actually going to ride to my brother in law's house in Burlington VT from NYC...
So, the Sugino OX801D crank in 46/30 is kinda attractive... I like the idea of a double that covers a triple's gear range...
In speaking with my fitter he said that, "You'll get killed on the flats..."
I don't understand that statement whatsoever.
Should I go UP to a 50/34 compact and maybe open up the rear cog with a MTB derailleur (11-36..)??
How am I going to "get killed in the flats," if I'm not decreasing my big chainring?
Does it have to do with the difference in overlap because I see 46/30 as equivalent to a 3 gear drop in the rear versus a 2 gear drop with 46/36...?
In other words how does opening up the tooth count in the front impact shifting overall?