Join Date: Apr 2006
Location: Speeenard 'laska
How long are your rides? What kind of wind are you looking at? I think the mountain bike would be better if you're looking at shorter rides through rougher roads with lots of wet holes and uncertain bottoms. If you're riding on well drained roadways and facing serious wind minimizing surface area is probably better.
And yes, you do get very hot. I found I did better with less clothing than I thought I needed. I stayed with a single layer of polypro top and bottom and a single, usually open winter coat. That was it, all the way to -20 f. The one time I wore by arctic longjohns I sweated up a storm. Keeping clothes somewhat loose and using wicking materials is critical. Sweat is a bigger enemy than cold air during the winter. The local natives in these parts figured it out long ago, and developed baggy clothing that was tight at the wrists and ankles but airy inside, to allow the skin to create its own pocket of warm air and to minimize sweat from contact with materials.