I'm sure this is a dopey question, but this forum isn't "Road Cycling" so I can probably survive the responses. I fairly new to cycling and very new to cold weather cycling, although I've done a lot of cold weather running years ago.
I went on a 30-mile ride when it was 19 F. I wore:
- ski socks with a plastic bag over them (no room in my shoes for two pairs of socks)
- long underwear bottoms (some synthetic, 30 years old), leg warmers, bib shorts
- thermal top, long-sleeved jersey, PI rain jacket
- thin neck gaiter with a mountaineering under-helmet cap (fleece), safety glasses
- down mitten (mountaineering, really serious, with fur patch on back, on one hand (an experiment), and a ski glove with a nylon overmitt (mountaineering) on the other hand
Only my feet and cheeks got cold - I knew they would. The cheeks weren't really a problem but the feet would be if it had been a longer ride. I think I need to set up my 35 year old Lotus with platform pedals and wear winter boots.
But (I finally get to the point), my arms were pretty sweaty. I assume I should have been wearing a vest instead of the jacket (plus it's always reassuring to have another piece of clothing in reserve in the cold), but it doesn't seem that the arms should get so warm. I've ridden in the high 20's dressed as above w/o the jacket and my belly area got cold.
- So, why do my arms get sweaty? Does cycling actually use the arm muscles a lot?
- Any alternative to a vest? A trash bag under the front of my jersey?