To be fair, he did not state in his original post that he was not in a postion to buy new stuff, only in subsequent post. Many replied based on this original request.

i like the idea of rolling up your jacket and whatever else and strapping it under neath your seat like it was a bag.

whenever I go to the pool for laps i take my towel and roll up my goggles and jammers right in the center nice and tight. You cound put all your cold weather gear in the pockets of your jacket or even inside your jacket, roll it up really tight and secure it under the back of your seat. If it came loose and fell off it would most likely just skip off the tire and hit the road behind you.

Stuff the jacket or tights into one of their arms/legs to form neat package and tie it between your shifters. A couple long shoelaces work well for this because they don't unravel like most string and are usually easy to untie.

I like this idea. I already have a small saddle bag for tube, tire levers, CO2, etc. so this would probably bungee around it fine. Arm and knee warmers, lightweight jacket, etc. are on my list for future purchases so in time this will be less of an issue. Thanks for all the tips.

+1. Being in the Pacific Northwest, weather can be as unpredictable as any. I also find "WindStopper" fabric jackets/jerseys help keep the chill out considerably but vents easily when the temp changes up.

I usually only bring one water bottle per ride so I use a container in the spare cage to hold most of my stuff. An old water bottle or like someone mentioned above a tennis ball can will work. You can put a surprising amount of stuff in there.

You would be amazed how easy it is for stuff to get loose. I honestly think you're asking for trouble if you try to bungee anything to your frame (and this particular solution will muck up your jacket pronto if you hit any wet stuff). Also, this won't be convenient as it will take a couple minutes to transition. A larger saddle bag or one for your bars seems a much better way to go in the short term.

The long term plan needs to be to acquire clothing better suited to what you need. I can carry leg and arm warmers, extra jersey, balaclava, jacket, and still have room for gels in my jersey. Depending on your actual needs, I see a number of people skip the jacket but pack a garbage bag to use for protection on the descents. Obviously, this only works if you're not in the cold for long when you're not working hard and just need relief from the wind.

To those of you advocating sacrificing a water bottle -- there are a lot of extended climbs where there are no water sources and even two bottles is less than you need.

While I agree with this in general, being at 10,000 feet in April in the Rockies can quickly become a situation where arm warmers and a light jacket are not enough - especially on a long, cold decent. However, if I had a lighter jacket I'd probably take it instead.

I have a stuff sack with lash points and I think I can do a pretty good job of securing it. Thanks for the warning though. I will be sure to evaluate the solution before putting faith in it. I might invest in a larger saddle bag, but if lashing things turns out to work well, there are aspects to that solution that I like. I don't mind the small hassle of getting stuff out since I'm not going to try and change while riding anyway.

Over time my clothing stockpile will surely increase.

Agree with this. No way I'm heading out with one water bottle. I've run out on rides around town with two where it's easy to stop at a fast food and fill up. Harder on remote mountain roads.

large Saddle Bag
 

How about a not so expensive purchase. I've been looking at a large ortlieb saddle bag for long rides.

Capacity is 164.67 cu .in.
Weight is 320g/11.1oz
Material: PS36C
Measurements: 9.1 x 6.3 x 3.9 inch

Did a google search and it looks like you can pick one up for around $40

http://www.bikebagshop.com/cart/imag...saddle-bag.jpg

Do you have or have you tried a Windstopper jacket? I find it quite versatile; I've ridden in 3 C conditions (low-30's to you 'mericans) during winter, and just this wknd when temps hit the low-50's it didn't get stifling at all.

are these quick release type racks safe to use on a carbon seatpost?

I have a similar cycling specific jacket. It's from Gore and stops wind well, is water resistant, has zip off sleeves and rolls up not too big. I used this all winter with a base layer and a long sleeve cycling jersey. In the spring I've been using it with just one layer and sometimes with sleeves off. Quite versatile. I could probably wear it alone or with just a base layer as well. This is the jacket I plan to bring along but it won't pack into a jersey pocket very well.

I tried the lashing to the seat post approach but that proved to not work so well. I think a mid to large saddle bag is the winning solution. Now to find the right one. That Ortlieb or similar is probably about right.