training 1-16-13

Folsom Canal, 33.5 miles. QuestXS (foothole covers, hood w/windshield). 24.1mph average. The difference with the shield in place is dramatic. It's so much warmer and less windy inside and I must have sweat three times as much. It feels faster but given the fluctuations in my daily fitness a given PRE yields too much of a difference in speed to know how much. I need to cut a vent in the shield to reduce fogging. Maybe a crimp along the vertical centerline left untaped will provide enough airflow without much added drag.