Originally Posted by 1-track-mind
If you are starting out on a chilly (under 50F morning) and the temp rises later in the ride, what is the best way to stay comfortable. I'm thinking that wearing a small daypck may be the answer where extra clothes can be peeled and stored during the ride. I bought a Fox Huck jacket which has zippered sleeves and can be converted to a vest, to address this issue.
I also bought my first pair of tights, Gore Bike-Wear classic action bibs with windstopper. I think these will be great under 50, but wonder at what temp will heavy-duty tights be too hot ?
I ride in the mountains, so the temp fluctuations are magnified by the exertion and speed differences caused by the terrain.
Depends on the individual but for that pair of tights I'd suspect that they would get too hot around...um.. 50F

Honestly, they are some serious fire power for "cool" weather riding. I don't wear that when I'm riding at 15 to 20 F (my cut off, which is kinda wimpy by the way compared to the frozen North).
You are starting right by layering but stick with many light thin layers instead of one thick one. I always carry a rack bag or panniers to put my extra clothes in. If I'm riding to work, I don't usually strip layers because I'm not riding for that long. But if I'm out for a long recreational ride, I take things off and put them on all day long.